|
Inhibition of Catechol O-methyltransferase activity in SK-N-SH cells at a concentration of 100 nM
|
None
|
97.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis of 1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone and derivatives as potent and long-acting peripheral inhibitors of catechol-O-methyltransferase.
Year : 2002
Volume : 45
Issue : 3
First Page : 685
Last Page : 695
Authors : Learmonth DA, Vieira-Coelho MA, Benes J, Alves PC, Borges N, Freitas AP, da-Silva PS.
Abstract : A homologous series of novel nitro-catechol structures (7a-7e) were synthesized and tested as inhibitors of the enzyme catechol-O-methyltransferase (COMT). Increasing chain length was found to have significant impact on both brain penetration and duration of COMT inhibition in the rat. Of this series, compound 7b (1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone) was found to exhibit the most potent and selective inhibition of peripheral COMT, with an inhibition profile more similar to entacapone 2 than tolcapone 1 (an equipotent peripheral and central inhibitor) but with much improved duration of action (7b, 70% inhibition and 2, 25% inhibition at 9 h after administration). The effects of structural modifications to 7b on COMT inhibitory profile were investigated, and it is concluded that the carbonyl group and preferably unsubstituted aromatic ring are essential features to maintain prolonged peripheral COMT inhibition. The introduction of the alpha-methylene group, the major structural difference between 7b and 1, would appear responsible for the observed enhancement in selectivity of peripheral COMT inhibition of 7b, which has more limited access to the brain than 1.
|
Inhibition of Catechol O-methyltransferase activity in rat brain
|
None
|
2.2
nM
|
|
Journal : J. Med. Chem.
Title : Synthesis of 1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone and derivatives as potent and long-acting peripheral inhibitors of catechol-O-methyltransferase.
Year : 2002
Volume : 45
Issue : 3
First Page : 685
Last Page : 695
Authors : Learmonth DA, Vieira-Coelho MA, Benes J, Alves PC, Borges N, Freitas AP, da-Silva PS.
Abstract : A homologous series of novel nitro-catechol structures (7a-7e) were synthesized and tested as inhibitors of the enzyme catechol-O-methyltransferase (COMT). Increasing chain length was found to have significant impact on both brain penetration and duration of COMT inhibition in the rat. Of this series, compound 7b (1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone) was found to exhibit the most potent and selective inhibition of peripheral COMT, with an inhibition profile more similar to entacapone 2 than tolcapone 1 (an equipotent peripheral and central inhibitor) but with much improved duration of action (7b, 70% inhibition and 2, 25% inhibition at 9 h after administration). The effects of structural modifications to 7b on COMT inhibitory profile were investigated, and it is concluded that the carbonyl group and preferably unsubstituted aromatic ring are essential features to maintain prolonged peripheral COMT inhibition. The introduction of the alpha-methylene group, the major structural difference between 7b and 1, would appear responsible for the observed enhancement in selectivity of peripheral COMT inhibition of 7b, which has more limited access to the brain than 1.
|
Percent inhibition of Catechol O-methyltransferase activity in rat brain at dose of 30 mg/kg determined at 0.5 hr after its administration
|
None
|
99.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis of 1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone and derivatives as potent and long-acting peripheral inhibitors of catechol-O-methyltransferase.
Year : 2002
Volume : 45
Issue : 3
First Page : 685
Last Page : 695
Authors : Learmonth DA, Vieira-Coelho MA, Benes J, Alves PC, Borges N, Freitas AP, da-Silva PS.
Abstract : A homologous series of novel nitro-catechol structures (7a-7e) were synthesized and tested as inhibitors of the enzyme catechol-O-methyltransferase (COMT). Increasing chain length was found to have significant impact on both brain penetration and duration of COMT inhibition in the rat. Of this series, compound 7b (1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone) was found to exhibit the most potent and selective inhibition of peripheral COMT, with an inhibition profile more similar to entacapone 2 than tolcapone 1 (an equipotent peripheral and central inhibitor) but with much improved duration of action (7b, 70% inhibition and 2, 25% inhibition at 9 h after administration). The effects of structural modifications to 7b on COMT inhibitory profile were investigated, and it is concluded that the carbonyl group and preferably unsubstituted aromatic ring are essential features to maintain prolonged peripheral COMT inhibition. The introduction of the alpha-methylene group, the major structural difference between 7b and 1, would appear responsible for the observed enhancement in selectivity of peripheral COMT inhibition of 7b, which has more limited access to the brain than 1.
|
Percent inhibition of Catechol O-methyltransferase activity in rat brain at dose of 30 mg/kg determined at 1 hr after its administration
|
None
|
99.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis of 1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone and derivatives as potent and long-acting peripheral inhibitors of catechol-O-methyltransferase.
Year : 2002
Volume : 45
Issue : 3
First Page : 685
Last Page : 695
Authors : Learmonth DA, Vieira-Coelho MA, Benes J, Alves PC, Borges N, Freitas AP, da-Silva PS.
Abstract : A homologous series of novel nitro-catechol structures (7a-7e) were synthesized and tested as inhibitors of the enzyme catechol-O-methyltransferase (COMT). Increasing chain length was found to have significant impact on both brain penetration and duration of COMT inhibition in the rat. Of this series, compound 7b (1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone) was found to exhibit the most potent and selective inhibition of peripheral COMT, with an inhibition profile more similar to entacapone 2 than tolcapone 1 (an equipotent peripheral and central inhibitor) but with much improved duration of action (7b, 70% inhibition and 2, 25% inhibition at 9 h after administration). The effects of structural modifications to 7b on COMT inhibitory profile were investigated, and it is concluded that the carbonyl group and preferably unsubstituted aromatic ring are essential features to maintain prolonged peripheral COMT inhibition. The introduction of the alpha-methylene group, the major structural difference between 7b and 1, would appear responsible for the observed enhancement in selectivity of peripheral COMT inhibition of 7b, which has more limited access to the brain than 1.
|
Percent inhibition of Catechol O-methyltransferase activity in rat brain at dose of 30 mg/kg determined at 3 hr after its administration
|
None
|
97.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis of 1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone and derivatives as potent and long-acting peripheral inhibitors of catechol-O-methyltransferase.
Year : 2002
Volume : 45
Issue : 3
First Page : 685
Last Page : 695
Authors : Learmonth DA, Vieira-Coelho MA, Benes J, Alves PC, Borges N, Freitas AP, da-Silva PS.
Abstract : A homologous series of novel nitro-catechol structures (7a-7e) were synthesized and tested as inhibitors of the enzyme catechol-O-methyltransferase (COMT). Increasing chain length was found to have significant impact on both brain penetration and duration of COMT inhibition in the rat. Of this series, compound 7b (1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone) was found to exhibit the most potent and selective inhibition of peripheral COMT, with an inhibition profile more similar to entacapone 2 than tolcapone 1 (an equipotent peripheral and central inhibitor) but with much improved duration of action (7b, 70% inhibition and 2, 25% inhibition at 9 h after administration). The effects of structural modifications to 7b on COMT inhibitory profile were investigated, and it is concluded that the carbonyl group and preferably unsubstituted aromatic ring are essential features to maintain prolonged peripheral COMT inhibition. The introduction of the alpha-methylene group, the major structural difference between 7b and 1, would appear responsible for the observed enhancement in selectivity of peripheral COMT inhibition of 7b, which has more limited access to the brain than 1.
|
Percent inhibition of Catechol O-methyltransferase activity in rat brain at dose of 30 mg/kg determined at 9 hr after its administration
|
None
|
78.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis of 1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone and derivatives as potent and long-acting peripheral inhibitors of catechol-O-methyltransferase.
Year : 2002
Volume : 45
Issue : 3
First Page : 685
Last Page : 695
Authors : Learmonth DA, Vieira-Coelho MA, Benes J, Alves PC, Borges N, Freitas AP, da-Silva PS.
Abstract : A homologous series of novel nitro-catechol structures (7a-7e) were synthesized and tested as inhibitors of the enzyme catechol-O-methyltransferase (COMT). Increasing chain length was found to have significant impact on both brain penetration and duration of COMT inhibition in the rat. Of this series, compound 7b (1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone) was found to exhibit the most potent and selective inhibition of peripheral COMT, with an inhibition profile more similar to entacapone 2 than tolcapone 1 (an equipotent peripheral and central inhibitor) but with much improved duration of action (7b, 70% inhibition and 2, 25% inhibition at 9 h after administration). The effects of structural modifications to 7b on COMT inhibitory profile were investigated, and it is concluded that the carbonyl group and preferably unsubstituted aromatic ring are essential features to maintain prolonged peripheral COMT inhibition. The introduction of the alpha-methylene group, the major structural difference between 7b and 1, would appear responsible for the observed enhancement in selectivity of peripheral COMT inhibition of 7b, which has more limited access to the brain than 1.
|
Percent inhibition of Catechol O-methyltransferase activity in rat liver at dose of 30 mg/kg determined at 0.5 hr after its administration
|
None
|
100.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis of 1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone and derivatives as potent and long-acting peripheral inhibitors of catechol-O-methyltransferase.
Year : 2002
Volume : 45
Issue : 3
First Page : 685
Last Page : 695
Authors : Learmonth DA, Vieira-Coelho MA, Benes J, Alves PC, Borges N, Freitas AP, da-Silva PS.
Abstract : A homologous series of novel nitro-catechol structures (7a-7e) were synthesized and tested as inhibitors of the enzyme catechol-O-methyltransferase (COMT). Increasing chain length was found to have significant impact on both brain penetration and duration of COMT inhibition in the rat. Of this series, compound 7b (1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone) was found to exhibit the most potent and selective inhibition of peripheral COMT, with an inhibition profile more similar to entacapone 2 than tolcapone 1 (an equipotent peripheral and central inhibitor) but with much improved duration of action (7b, 70% inhibition and 2, 25% inhibition at 9 h after administration). The effects of structural modifications to 7b on COMT inhibitory profile were investigated, and it is concluded that the carbonyl group and preferably unsubstituted aromatic ring are essential features to maintain prolonged peripheral COMT inhibition. The introduction of the alpha-methylene group, the major structural difference between 7b and 1, would appear responsible for the observed enhancement in selectivity of peripheral COMT inhibition of 7b, which has more limited access to the brain than 1.
|
Percent inhibition of Catechol O-methyltransferase activity in rat liver at dose of 30 mg/kg determined at 1 hr after its administration
|
None
|
99.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis of 1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone and derivatives as potent and long-acting peripheral inhibitors of catechol-O-methyltransferase.
Year : 2002
Volume : 45
Issue : 3
First Page : 685
Last Page : 695
Authors : Learmonth DA, Vieira-Coelho MA, Benes J, Alves PC, Borges N, Freitas AP, da-Silva PS.
Abstract : A homologous series of novel nitro-catechol structures (7a-7e) were synthesized and tested as inhibitors of the enzyme catechol-O-methyltransferase (COMT). Increasing chain length was found to have significant impact on both brain penetration and duration of COMT inhibition in the rat. Of this series, compound 7b (1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone) was found to exhibit the most potent and selective inhibition of peripheral COMT, with an inhibition profile more similar to entacapone 2 than tolcapone 1 (an equipotent peripheral and central inhibitor) but with much improved duration of action (7b, 70% inhibition and 2, 25% inhibition at 9 h after administration). The effects of structural modifications to 7b on COMT inhibitory profile were investigated, and it is concluded that the carbonyl group and preferably unsubstituted aromatic ring are essential features to maintain prolonged peripheral COMT inhibition. The introduction of the alpha-methylene group, the major structural difference between 7b and 1, would appear responsible for the observed enhancement in selectivity of peripheral COMT inhibition of 7b, which has more limited access to the brain than 1.
|
Percent inhibition of Catechol O-methyltransferase activity in rat liver at dose of 30 mg/kg determined at 3 hr after its administration
|
None
|
98.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis of 1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone and derivatives as potent and long-acting peripheral inhibitors of catechol-O-methyltransferase.
Year : 2002
Volume : 45
Issue : 3
First Page : 685
Last Page : 695
Authors : Learmonth DA, Vieira-Coelho MA, Benes J, Alves PC, Borges N, Freitas AP, da-Silva PS.
Abstract : A homologous series of novel nitro-catechol structures (7a-7e) were synthesized and tested as inhibitors of the enzyme catechol-O-methyltransferase (COMT). Increasing chain length was found to have significant impact on both brain penetration and duration of COMT inhibition in the rat. Of this series, compound 7b (1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone) was found to exhibit the most potent and selective inhibition of peripheral COMT, with an inhibition profile more similar to entacapone 2 than tolcapone 1 (an equipotent peripheral and central inhibitor) but with much improved duration of action (7b, 70% inhibition and 2, 25% inhibition at 9 h after administration). The effects of structural modifications to 7b on COMT inhibitory profile were investigated, and it is concluded that the carbonyl group and preferably unsubstituted aromatic ring are essential features to maintain prolonged peripheral COMT inhibition. The introduction of the alpha-methylene group, the major structural difference between 7b and 1, would appear responsible for the observed enhancement in selectivity of peripheral COMT inhibition of 7b, which has more limited access to the brain than 1.
|
Percent inhibition of Catechol O-methyltransferase activity in rat liver at dose of 30 mg/kg determined at 6 hr after its administration
|
None
|
94.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis of 1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone and derivatives as potent and long-acting peripheral inhibitors of catechol-O-methyltransferase.
Year : 2002
Volume : 45
Issue : 3
First Page : 685
Last Page : 695
Authors : Learmonth DA, Vieira-Coelho MA, Benes J, Alves PC, Borges N, Freitas AP, da-Silva PS.
Abstract : A homologous series of novel nitro-catechol structures (7a-7e) were synthesized and tested as inhibitors of the enzyme catechol-O-methyltransferase (COMT). Increasing chain length was found to have significant impact on both brain penetration and duration of COMT inhibition in the rat. Of this series, compound 7b (1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone) was found to exhibit the most potent and selective inhibition of peripheral COMT, with an inhibition profile more similar to entacapone 2 than tolcapone 1 (an equipotent peripheral and central inhibitor) but with much improved duration of action (7b, 70% inhibition and 2, 25% inhibition at 9 h after administration). The effects of structural modifications to 7b on COMT inhibitory profile were investigated, and it is concluded that the carbonyl group and preferably unsubstituted aromatic ring are essential features to maintain prolonged peripheral COMT inhibition. The introduction of the alpha-methylene group, the major structural difference between 7b and 1, would appear responsible for the observed enhancement in selectivity of peripheral COMT inhibition of 7b, which has more limited access to the brain than 1.
|
Percent inhibition of Catechol O-methyltransferase activity in rat liver at dose of 30 mg/kg determined at 9 hr after its administration
|
None
|
67.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis of 1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone and derivatives as potent and long-acting peripheral inhibitors of catechol-O-methyltransferase.
Year : 2002
Volume : 45
Issue : 3
First Page : 685
Last Page : 695
Authors : Learmonth DA, Vieira-Coelho MA, Benes J, Alves PC, Borges N, Freitas AP, da-Silva PS.
Abstract : A homologous series of novel nitro-catechol structures (7a-7e) were synthesized and tested as inhibitors of the enzyme catechol-O-methyltransferase (COMT). Increasing chain length was found to have significant impact on both brain penetration and duration of COMT inhibition in the rat. Of this series, compound 7b (1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone) was found to exhibit the most potent and selective inhibition of peripheral COMT, with an inhibition profile more similar to entacapone 2 than tolcapone 1 (an equipotent peripheral and central inhibitor) but with much improved duration of action (7b, 70% inhibition and 2, 25% inhibition at 9 h after administration). The effects of structural modifications to 7b on COMT inhibitory profile were investigated, and it is concluded that the carbonyl group and preferably unsubstituted aromatic ring are essential features to maintain prolonged peripheral COMT inhibition. The introduction of the alpha-methylene group, the major structural difference between 7b and 1, would appear responsible for the observed enhancement in selectivity of peripheral COMT inhibition of 7b, which has more limited access to the brain than 1.
|
percent inhibition of Catechol O-methyltransferase activity in rat brain at dose of 30 mg/kg determined at 6 hr after its administration
|
None
|
86.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis of 1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone and derivatives as potent and long-acting peripheral inhibitors of catechol-O-methyltransferase.
Year : 2002
Volume : 45
Issue : 3
First Page : 685
Last Page : 695
Authors : Learmonth DA, Vieira-Coelho MA, Benes J, Alves PC, Borges N, Freitas AP, da-Silva PS.
Abstract : A homologous series of novel nitro-catechol structures (7a-7e) were synthesized and tested as inhibitors of the enzyme catechol-O-methyltransferase (COMT). Increasing chain length was found to have significant impact on both brain penetration and duration of COMT inhibition in the rat. Of this series, compound 7b (1-(3,4-dihydroxy-5-nitrophenyl)-2-phenyl-ethanone) was found to exhibit the most potent and selective inhibition of peripheral COMT, with an inhibition profile more similar to entacapone 2 than tolcapone 1 (an equipotent peripheral and central inhibitor) but with much improved duration of action (7b, 70% inhibition and 2, 25% inhibition at 9 h after administration). The effects of structural modifications to 7b on COMT inhibitory profile were investigated, and it is concluded that the carbonyl group and preferably unsubstituted aromatic ring are essential features to maintain prolonged peripheral COMT inhibition. The introduction of the alpha-methylene group, the major structural difference between 7b and 1, would appear responsible for the observed enhancement in selectivity of peripheral COMT inhibition of 7b, which has more limited access to the brain than 1.
|
Percentage inhibitory activity against COMT at 100 nM in human neuroblastoma SK-N-SH cells
|
Homo sapiens
|
97.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis and biological evaluation of a novel series of "ortho-nitrated" inhibitors of catechol-O-methyltransferase.
Year : 2005
Volume : 48
Issue : 25
First Page : 8070
Last Page : 8078
Authors : Learmonth DA, Bonifácio MJ, Soares-da-Silva P.
Abstract : Novel regioisomeric "ortho-nitrated" catechols related to the catechol-O-methyltransferase (COMT) inhibitors BIA 3-202 3 and BIA 3-335 4 were synthesized and biologically evaluated. Changing the position of the nitro group from the "classical" meta- to the ortho-position relative to the side-chain substituent of the nitrocatechol pharmacophore exerted profound effects on selectivity and duration of COMT inhibition. Alkylaryl compounds 7a-d possessed shorter duration of action than their regioisomers, but 7b displayed reversed selectivity over 3 at 3 and 6 h, exhibiting preferential central inhibition. In the amino-substituted series, ortho-nitrated regioisomer 14k was less peripherally selective than 4 and short-acting, whereas decahydroquinoline 14g displayed an unprecedented combination of long-acting and selective peripheral inhibition. 7b could provide a useful tool to probe the pharmacological utility of short-acting, centrally selective COMT inhibitors in the treatment of depression in Parkinsonian patients, and 14g represents a promising candidate for clinical evaluation as an adjunct to L-Dopa therapy.
|
Inhibitory activity against COMT in rat liver
|
Rattus norvegicus
|
930.0
nM
|
|
Journal : J. Med. Chem.
Title : Synthesis and biological evaluation of a novel series of "ortho-nitrated" inhibitors of catechol-O-methyltransferase.
Year : 2005
Volume : 48
Issue : 25
First Page : 8070
Last Page : 8078
Authors : Learmonth DA, Bonifácio MJ, Soares-da-Silva P.
Abstract : Novel regioisomeric "ortho-nitrated" catechols related to the catechol-O-methyltransferase (COMT) inhibitors BIA 3-202 3 and BIA 3-335 4 were synthesized and biologically evaluated. Changing the position of the nitro group from the "classical" meta- to the ortho-position relative to the side-chain substituent of the nitrocatechol pharmacophore exerted profound effects on selectivity and duration of COMT inhibition. Alkylaryl compounds 7a-d possessed shorter duration of action than their regioisomers, but 7b displayed reversed selectivity over 3 at 3 and 6 h, exhibiting preferential central inhibition. In the amino-substituted series, ortho-nitrated regioisomer 14k was less peripherally selective than 4 and short-acting, whereas decahydroquinoline 14g displayed an unprecedented combination of long-acting and selective peripheral inhibition. 7b could provide a useful tool to probe the pharmacological utility of short-acting, centrally selective COMT inhibitors in the treatment of depression in Parkinsonian patients, and 14g represents a promising candidate for clinical evaluation as an adjunct to L-Dopa therapy.
|
Percentage inhibitory activity against COMT for 0.5h in homogenates of rat brain administered with 30mg/kg by Gastric tube
|
Rattus norvegicus
|
99.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis and biological evaluation of a novel series of "ortho-nitrated" inhibitors of catechol-O-methyltransferase.
Year : 2005
Volume : 48
Issue : 25
First Page : 8070
Last Page : 8078
Authors : Learmonth DA, Bonifácio MJ, Soares-da-Silva P.
Abstract : Novel regioisomeric "ortho-nitrated" catechols related to the catechol-O-methyltransferase (COMT) inhibitors BIA 3-202 3 and BIA 3-335 4 were synthesized and biologically evaluated. Changing the position of the nitro group from the "classical" meta- to the ortho-position relative to the side-chain substituent of the nitrocatechol pharmacophore exerted profound effects on selectivity and duration of COMT inhibition. Alkylaryl compounds 7a-d possessed shorter duration of action than their regioisomers, but 7b displayed reversed selectivity over 3 at 3 and 6 h, exhibiting preferential central inhibition. In the amino-substituted series, ortho-nitrated regioisomer 14k was less peripherally selective than 4 and short-acting, whereas decahydroquinoline 14g displayed an unprecedented combination of long-acting and selective peripheral inhibition. 7b could provide a useful tool to probe the pharmacological utility of short-acting, centrally selective COMT inhibitors in the treatment of depression in Parkinsonian patients, and 14g represents a promising candidate for clinical evaluation as an adjunct to L-Dopa therapy.
|
Percentage inhibitory activity against COMT for 1h in homogenates of rat brain administered with 30mg/kg by Gastric tube
|
Rattus norvegicus
|
99.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis and biological evaluation of a novel series of "ortho-nitrated" inhibitors of catechol-O-methyltransferase.
Year : 2005
Volume : 48
Issue : 25
First Page : 8070
Last Page : 8078
Authors : Learmonth DA, Bonifácio MJ, Soares-da-Silva P.
Abstract : Novel regioisomeric "ortho-nitrated" catechols related to the catechol-O-methyltransferase (COMT) inhibitors BIA 3-202 3 and BIA 3-335 4 were synthesized and biologically evaluated. Changing the position of the nitro group from the "classical" meta- to the ortho-position relative to the side-chain substituent of the nitrocatechol pharmacophore exerted profound effects on selectivity and duration of COMT inhibition. Alkylaryl compounds 7a-d possessed shorter duration of action than their regioisomers, but 7b displayed reversed selectivity over 3 at 3 and 6 h, exhibiting preferential central inhibition. In the amino-substituted series, ortho-nitrated regioisomer 14k was less peripherally selective than 4 and short-acting, whereas decahydroquinoline 14g displayed an unprecedented combination of long-acting and selective peripheral inhibition. 7b could provide a useful tool to probe the pharmacological utility of short-acting, centrally selective COMT inhibitors in the treatment of depression in Parkinsonian patients, and 14g represents a promising candidate for clinical evaluation as an adjunct to L-Dopa therapy.
|
Percentage inhibitory activity against COMT for 3h in homogenates of rat brain administered with 30mg/kg by Gastric tube
|
Rattus norvegicus
|
97.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis and biological evaluation of a novel series of "ortho-nitrated" inhibitors of catechol-O-methyltransferase.
Year : 2005
Volume : 48
Issue : 25
First Page : 8070
Last Page : 8078
Authors : Learmonth DA, Bonifácio MJ, Soares-da-Silva P.
Abstract : Novel regioisomeric "ortho-nitrated" catechols related to the catechol-O-methyltransferase (COMT) inhibitors BIA 3-202 3 and BIA 3-335 4 were synthesized and biologically evaluated. Changing the position of the nitro group from the "classical" meta- to the ortho-position relative to the side-chain substituent of the nitrocatechol pharmacophore exerted profound effects on selectivity and duration of COMT inhibition. Alkylaryl compounds 7a-d possessed shorter duration of action than their regioisomers, but 7b displayed reversed selectivity over 3 at 3 and 6 h, exhibiting preferential central inhibition. In the amino-substituted series, ortho-nitrated regioisomer 14k was less peripherally selective than 4 and short-acting, whereas decahydroquinoline 14g displayed an unprecedented combination of long-acting and selective peripheral inhibition. 7b could provide a useful tool to probe the pharmacological utility of short-acting, centrally selective COMT inhibitors in the treatment of depression in Parkinsonian patients, and 14g represents a promising candidate for clinical evaluation as an adjunct to L-Dopa therapy.
|
Percentage inhibitory activity against COMT for 6h in homogenates of rat brain administered with 30 mg/kg by Gastric tube
|
Rattus norvegicus
|
86.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis and biological evaluation of a novel series of "ortho-nitrated" inhibitors of catechol-O-methyltransferase.
Year : 2005
Volume : 48
Issue : 25
First Page : 8070
Last Page : 8078
Authors : Learmonth DA, Bonifácio MJ, Soares-da-Silva P.
Abstract : Novel regioisomeric "ortho-nitrated" catechols related to the catechol-O-methyltransferase (COMT) inhibitors BIA 3-202 3 and BIA 3-335 4 were synthesized and biologically evaluated. Changing the position of the nitro group from the "classical" meta- to the ortho-position relative to the side-chain substituent of the nitrocatechol pharmacophore exerted profound effects on selectivity and duration of COMT inhibition. Alkylaryl compounds 7a-d possessed shorter duration of action than their regioisomers, but 7b displayed reversed selectivity over 3 at 3 and 6 h, exhibiting preferential central inhibition. In the amino-substituted series, ortho-nitrated regioisomer 14k was less peripherally selective than 4 and short-acting, whereas decahydroquinoline 14g displayed an unprecedented combination of long-acting and selective peripheral inhibition. 7b could provide a useful tool to probe the pharmacological utility of short-acting, centrally selective COMT inhibitors in the treatment of depression in Parkinsonian patients, and 14g represents a promising candidate for clinical evaluation as an adjunct to L-Dopa therapy.
|
Percentage inhibitory activity against COMT for 9h in homogenates of rat brain administered with 30 mg/kg by Gastric tube
|
Rattus norvegicus
|
78.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis and biological evaluation of a novel series of "ortho-nitrated" inhibitors of catechol-O-methyltransferase.
Year : 2005
Volume : 48
Issue : 25
First Page : 8070
Last Page : 8078
Authors : Learmonth DA, Bonifácio MJ, Soares-da-Silva P.
Abstract : Novel regioisomeric "ortho-nitrated" catechols related to the catechol-O-methyltransferase (COMT) inhibitors BIA 3-202 3 and BIA 3-335 4 were synthesized and biologically evaluated. Changing the position of the nitro group from the "classical" meta- to the ortho-position relative to the side-chain substituent of the nitrocatechol pharmacophore exerted profound effects on selectivity and duration of COMT inhibition. Alkylaryl compounds 7a-d possessed shorter duration of action than their regioisomers, but 7b displayed reversed selectivity over 3 at 3 and 6 h, exhibiting preferential central inhibition. In the amino-substituted series, ortho-nitrated regioisomer 14k was less peripherally selective than 4 and short-acting, whereas decahydroquinoline 14g displayed an unprecedented combination of long-acting and selective peripheral inhibition. 7b could provide a useful tool to probe the pharmacological utility of short-acting, centrally selective COMT inhibitors in the treatment of depression in Parkinsonian patients, and 14g represents a promising candidate for clinical evaluation as an adjunct to L-Dopa therapy.
|
Percentage inhibitory activity against COMT for 1h in homogenates of rat liver administered with 30 mg/kg by Gastric tube
|
Rattus norvegicus
|
99.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis and biological evaluation of a novel series of "ortho-nitrated" inhibitors of catechol-O-methyltransferase.
Year : 2005
Volume : 48
Issue : 25
First Page : 8070
Last Page : 8078
Authors : Learmonth DA, Bonifácio MJ, Soares-da-Silva P.
Abstract : Novel regioisomeric "ortho-nitrated" catechols related to the catechol-O-methyltransferase (COMT) inhibitors BIA 3-202 3 and BIA 3-335 4 were synthesized and biologically evaluated. Changing the position of the nitro group from the "classical" meta- to the ortho-position relative to the side-chain substituent of the nitrocatechol pharmacophore exerted profound effects on selectivity and duration of COMT inhibition. Alkylaryl compounds 7a-d possessed shorter duration of action than their regioisomers, but 7b displayed reversed selectivity over 3 at 3 and 6 h, exhibiting preferential central inhibition. In the amino-substituted series, ortho-nitrated regioisomer 14k was less peripherally selective than 4 and short-acting, whereas decahydroquinoline 14g displayed an unprecedented combination of long-acting and selective peripheral inhibition. 7b could provide a useful tool to probe the pharmacological utility of short-acting, centrally selective COMT inhibitors in the treatment of depression in Parkinsonian patients, and 14g represents a promising candidate for clinical evaluation as an adjunct to L-Dopa therapy.
|
Percentage inhibitory activity against COMT for 6h in homogenates of rat liver administered with 30 mg/kg by Gastric tube
|
Rattus norvegicus
|
94.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis and biological evaluation of a novel series of "ortho-nitrated" inhibitors of catechol-O-methyltransferase.
Year : 2005
Volume : 48
Issue : 25
First Page : 8070
Last Page : 8078
Authors : Learmonth DA, Bonifácio MJ, Soares-da-Silva P.
Abstract : Novel regioisomeric "ortho-nitrated" catechols related to the catechol-O-methyltransferase (COMT) inhibitors BIA 3-202 3 and BIA 3-335 4 were synthesized and biologically evaluated. Changing the position of the nitro group from the "classical" meta- to the ortho-position relative to the side-chain substituent of the nitrocatechol pharmacophore exerted profound effects on selectivity and duration of COMT inhibition. Alkylaryl compounds 7a-d possessed shorter duration of action than their regioisomers, but 7b displayed reversed selectivity over 3 at 3 and 6 h, exhibiting preferential central inhibition. In the amino-substituted series, ortho-nitrated regioisomer 14k was less peripherally selective than 4 and short-acting, whereas decahydroquinoline 14g displayed an unprecedented combination of long-acting and selective peripheral inhibition. 7b could provide a useful tool to probe the pharmacological utility of short-acting, centrally selective COMT inhibitors in the treatment of depression in Parkinsonian patients, and 14g represents a promising candidate for clinical evaluation as an adjunct to L-Dopa therapy.
|
Percentage inhibitory activity against COMT for 0.5h in homogenates of rat liver administered with 30mg/kg by Gastric tube
|
Rattus norvegicus
|
100.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis and biological evaluation of a novel series of "ortho-nitrated" inhibitors of catechol-O-methyltransferase.
Year : 2005
Volume : 48
Issue : 25
First Page : 8070
Last Page : 8078
Authors : Learmonth DA, Bonifácio MJ, Soares-da-Silva P.
Abstract : Novel regioisomeric "ortho-nitrated" catechols related to the catechol-O-methyltransferase (COMT) inhibitors BIA 3-202 3 and BIA 3-335 4 were synthesized and biologically evaluated. Changing the position of the nitro group from the "classical" meta- to the ortho-position relative to the side-chain substituent of the nitrocatechol pharmacophore exerted profound effects on selectivity and duration of COMT inhibition. Alkylaryl compounds 7a-d possessed shorter duration of action than their regioisomers, but 7b displayed reversed selectivity over 3 at 3 and 6 h, exhibiting preferential central inhibition. In the amino-substituted series, ortho-nitrated regioisomer 14k was less peripherally selective than 4 and short-acting, whereas decahydroquinoline 14g displayed an unprecedented combination of long-acting and selective peripheral inhibition. 7b could provide a useful tool to probe the pharmacological utility of short-acting, centrally selective COMT inhibitors in the treatment of depression in Parkinsonian patients, and 14g represents a promising candidate for clinical evaluation as an adjunct to L-Dopa therapy.
|
Percentage inhibitory activity against COMT for 3h in homogenates of rat liver administered with 30 mg/kg by Gastric tube
|
Rattus norvegicus
|
98.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis and biological evaluation of a novel series of "ortho-nitrated" inhibitors of catechol-O-methyltransferase.
Year : 2005
Volume : 48
Issue : 25
First Page : 8070
Last Page : 8078
Authors : Learmonth DA, Bonifácio MJ, Soares-da-Silva P.
Abstract : Novel regioisomeric "ortho-nitrated" catechols related to the catechol-O-methyltransferase (COMT) inhibitors BIA 3-202 3 and BIA 3-335 4 were synthesized and biologically evaluated. Changing the position of the nitro group from the "classical" meta- to the ortho-position relative to the side-chain substituent of the nitrocatechol pharmacophore exerted profound effects on selectivity and duration of COMT inhibition. Alkylaryl compounds 7a-d possessed shorter duration of action than their regioisomers, but 7b displayed reversed selectivity over 3 at 3 and 6 h, exhibiting preferential central inhibition. In the amino-substituted series, ortho-nitrated regioisomer 14k was less peripherally selective than 4 and short-acting, whereas decahydroquinoline 14g displayed an unprecedented combination of long-acting and selective peripheral inhibition. 7b could provide a useful tool to probe the pharmacological utility of short-acting, centrally selective COMT inhibitors in the treatment of depression in Parkinsonian patients, and 14g represents a promising candidate for clinical evaluation as an adjunct to L-Dopa therapy.
|
Percentage inhibitory activity against COMT for 9h in homogenates of rat liver administered with 30mg/kg by Gastric tube
|
Rattus norvegicus
|
67.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis and biological evaluation of a novel series of "ortho-nitrated" inhibitors of catechol-O-methyltransferase.
Year : 2005
Volume : 48
Issue : 25
First Page : 8070
Last Page : 8078
Authors : Learmonth DA, Bonifácio MJ, Soares-da-Silva P.
Abstract : Novel regioisomeric "ortho-nitrated" catechols related to the catechol-O-methyltransferase (COMT) inhibitors BIA 3-202 3 and BIA 3-335 4 were synthesized and biologically evaluated. Changing the position of the nitro group from the "classical" meta- to the ortho-position relative to the side-chain substituent of the nitrocatechol pharmacophore exerted profound effects on selectivity and duration of COMT inhibition. Alkylaryl compounds 7a-d possessed shorter duration of action than their regioisomers, but 7b displayed reversed selectivity over 3 at 3 and 6 h, exhibiting preferential central inhibition. In the amino-substituted series, ortho-nitrated regioisomer 14k was less peripherally selective than 4 and short-acting, whereas decahydroquinoline 14g displayed an unprecedented combination of long-acting and selective peripheral inhibition. 7b could provide a useful tool to probe the pharmacological utility of short-acting, centrally selective COMT inhibitors in the treatment of depression in Parkinsonian patients, and 14g represents a promising candidate for clinical evaluation as an adjunct to L-Dopa therapy.
|
Inhibition of COMT in human SK-N-SH cells at 100 nM
|
Homo sapiens
|
97.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis, biological evaluation, and molecular modeling studies of a novel, peripherally selective inhibitor of catechol-O-methyltransferase.
Year : 2004
Volume : 47
Issue : 25
First Page : 6207
Last Page : 6217
Authors : Learmonth DA, Palma PN, Vieira-Coelho MA, Soares-da-Silva P.
Abstract : A novel series of potent, peripherally selective, and long-acting inhibitors of catechol-O-methyltransferase (COMT) has been synthesized. The introduction and nature of heteroatom-containing substituents to the side-chain of the nitrocatechol pharmacophore was found to have a profound effect on both peripheral selectivity and duration of COMT inhibition in the mouse. This approach led to the discovery of 1-(3,4-dihydroxy-5-nitrophenyl)-3-[4-[3-(trifluoromethyl)phenyl]-1-piperazinyl]-1-propanone hydrochloride 35 (BIA 3-335), which was found to possess a superior inhibitory profile in vivo over both the nonselective inhibitor tolcapone 1 and the peripherally selective but short-acting entacapone 2. In this model, 35 retained 75% inhibition of peripheral COMT at 6 h after oral administration, yet significantly, only a minor reduction of central (cerebral) COMT activity was observed. Molecular modeling techniques were applied to review the analysis of the ternary enzyme-inhibitor complex previously determined by X-ray crystallography and to provide a deeper understanding of the structure-activity relationships within this novel series. Furthermore, a computational approach was applied in an effort to elucidate the particular structural factors relevant to the poor blood-brain permeability of 35. In conclusion, the improved biological properties herein reported reveal 35 as a candidate for clinical studies as an adjunct to L-DOPA therapy for Parkinson's disease.
|
Inhibition of peripheral COMT in mouse liver at 30 mg/kg, po by gastric tube after 1 hr
|
Mus musculus
|
99.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis, biological evaluation, and molecular modeling studies of a novel, peripherally selective inhibitor of catechol-O-methyltransferase.
Year : 2004
Volume : 47
Issue : 25
First Page : 6207
Last Page : 6217
Authors : Learmonth DA, Palma PN, Vieira-Coelho MA, Soares-da-Silva P.
Abstract : A novel series of potent, peripherally selective, and long-acting inhibitors of catechol-O-methyltransferase (COMT) has been synthesized. The introduction and nature of heteroatom-containing substituents to the side-chain of the nitrocatechol pharmacophore was found to have a profound effect on both peripheral selectivity and duration of COMT inhibition in the mouse. This approach led to the discovery of 1-(3,4-dihydroxy-5-nitrophenyl)-3-[4-[3-(trifluoromethyl)phenyl]-1-piperazinyl]-1-propanone hydrochloride 35 (BIA 3-335), which was found to possess a superior inhibitory profile in vivo over both the nonselective inhibitor tolcapone 1 and the peripherally selective but short-acting entacapone 2. In this model, 35 retained 75% inhibition of peripheral COMT at 6 h after oral administration, yet significantly, only a minor reduction of central (cerebral) COMT activity was observed. Molecular modeling techniques were applied to review the analysis of the ternary enzyme-inhibitor complex previously determined by X-ray crystallography and to provide a deeper understanding of the structure-activity relationships within this novel series. Furthermore, a computational approach was applied in an effort to elucidate the particular structural factors relevant to the poor blood-brain permeability of 35. In conclusion, the improved biological properties herein reported reveal 35 as a candidate for clinical studies as an adjunct to L-DOPA therapy for Parkinson's disease.
|
Inhibition of central COMT in mouse brain at 30 mg/kg, po by gastric tube after 1 hr
|
Mus musculus
|
99.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis, biological evaluation, and molecular modeling studies of a novel, peripherally selective inhibitor of catechol-O-methyltransferase.
Year : 2004
Volume : 47
Issue : 25
First Page : 6207
Last Page : 6217
Authors : Learmonth DA, Palma PN, Vieira-Coelho MA, Soares-da-Silva P.
Abstract : A novel series of potent, peripherally selective, and long-acting inhibitors of catechol-O-methyltransferase (COMT) has been synthesized. The introduction and nature of heteroatom-containing substituents to the side-chain of the nitrocatechol pharmacophore was found to have a profound effect on both peripheral selectivity and duration of COMT inhibition in the mouse. This approach led to the discovery of 1-(3,4-dihydroxy-5-nitrophenyl)-3-[4-[3-(trifluoromethyl)phenyl]-1-piperazinyl]-1-propanone hydrochloride 35 (BIA 3-335), which was found to possess a superior inhibitory profile in vivo over both the nonselective inhibitor tolcapone 1 and the peripherally selective but short-acting entacapone 2. In this model, 35 retained 75% inhibition of peripheral COMT at 6 h after oral administration, yet significantly, only a minor reduction of central (cerebral) COMT activity was observed. Molecular modeling techniques were applied to review the analysis of the ternary enzyme-inhibitor complex previously determined by X-ray crystallography and to provide a deeper understanding of the structure-activity relationships within this novel series. Furthermore, a computational approach was applied in an effort to elucidate the particular structural factors relevant to the poor blood-brain permeability of 35. In conclusion, the improved biological properties herein reported reveal 35 as a candidate for clinical studies as an adjunct to L-DOPA therapy for Parkinson's disease.
|
Inhibition of peripheral COMT in mouse liver at 30 mg/kg, po by gastric tube after 6 hrs
|
Mus musculus
|
94.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis, biological evaluation, and molecular modeling studies of a novel, peripherally selective inhibitor of catechol-O-methyltransferase.
Year : 2004
Volume : 47
Issue : 25
First Page : 6207
Last Page : 6217
Authors : Learmonth DA, Palma PN, Vieira-Coelho MA, Soares-da-Silva P.
Abstract : A novel series of potent, peripherally selective, and long-acting inhibitors of catechol-O-methyltransferase (COMT) has been synthesized. The introduction and nature of heteroatom-containing substituents to the side-chain of the nitrocatechol pharmacophore was found to have a profound effect on both peripheral selectivity and duration of COMT inhibition in the mouse. This approach led to the discovery of 1-(3,4-dihydroxy-5-nitrophenyl)-3-[4-[3-(trifluoromethyl)phenyl]-1-piperazinyl]-1-propanone hydrochloride 35 (BIA 3-335), which was found to possess a superior inhibitory profile in vivo over both the nonselective inhibitor tolcapone 1 and the peripherally selective but short-acting entacapone 2. In this model, 35 retained 75% inhibition of peripheral COMT at 6 h after oral administration, yet significantly, only a minor reduction of central (cerebral) COMT activity was observed. Molecular modeling techniques were applied to review the analysis of the ternary enzyme-inhibitor complex previously determined by X-ray crystallography and to provide a deeper understanding of the structure-activity relationships within this novel series. Furthermore, a computational approach was applied in an effort to elucidate the particular structural factors relevant to the poor blood-brain permeability of 35. In conclusion, the improved biological properties herein reported reveal 35 as a candidate for clinical studies as an adjunct to L-DOPA therapy for Parkinson's disease.
|
Inhibition of central COMT in mouse brain at 30 mg/kg, po by gastric tube after 6 hrs
|
Mus musculus
|
86.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis, biological evaluation, and molecular modeling studies of a novel, peripherally selective inhibitor of catechol-O-methyltransferase.
Year : 2004
Volume : 47
Issue : 25
First Page : 6207
Last Page : 6217
Authors : Learmonth DA, Palma PN, Vieira-Coelho MA, Soares-da-Silva P.
Abstract : A novel series of potent, peripherally selective, and long-acting inhibitors of catechol-O-methyltransferase (COMT) has been synthesized. The introduction and nature of heteroatom-containing substituents to the side-chain of the nitrocatechol pharmacophore was found to have a profound effect on both peripheral selectivity and duration of COMT inhibition in the mouse. This approach led to the discovery of 1-(3,4-dihydroxy-5-nitrophenyl)-3-[4-[3-(trifluoromethyl)phenyl]-1-piperazinyl]-1-propanone hydrochloride 35 (BIA 3-335), which was found to possess a superior inhibitory profile in vivo over both the nonselective inhibitor tolcapone 1 and the peripherally selective but short-acting entacapone 2. In this model, 35 retained 75% inhibition of peripheral COMT at 6 h after oral administration, yet significantly, only a minor reduction of central (cerebral) COMT activity was observed. Molecular modeling techniques were applied to review the analysis of the ternary enzyme-inhibitor complex previously determined by X-ray crystallography and to provide a deeper understanding of the structure-activity relationships within this novel series. Furthermore, a computational approach was applied in an effort to elucidate the particular structural factors relevant to the poor blood-brain permeability of 35. In conclusion, the improved biological properties herein reported reveal 35 as a candidate for clinical studies as an adjunct to L-DOPA therapy for Parkinson's disease.
|
Inhibition of COMT in NMRI mouse liver homogenates assessed as metanephrine formation at 30 mg/kg, po measured after 6 hrs relative to control
|
Mus musculus
|
6.8
%
|
|
Journal : J. Med. Chem.
Title : Discovery of a long-acting, peripherally selective inhibitor of catechol-O-methyltransferase.
Year : 2010
Volume : 53
Issue : 8
First Page : 3396
Last Page : 3411
Authors : Kiss LE, Ferreira HS, Torrão L, Bonifácio MJ, Palma PN, Soares-da-Silva P, Learmonth DA.
Abstract : Novel nitrocatechol-substituted heterocycles were designed and evaluated for their ability to inhibit catechol-O-methyltransferase (COMT). Replacement of the pyrazole core of the initial hit 4 with a 1,2,4-oxadiazole ring resulted in a series of compounds endowed with longer duration of COMT inhibition. Incorporation of a pyridine N-oxide residue at position 3 of the 1,2,4-oxadiazole ring led to analogue 37f, which was found to possess activity comparable to entacapone and lower toxicity in comparison to tolcapone. Lead structure 37f was systematically modified in order to improve selectivity and duration of COMT inhibition as well as to minimize toxicity. Oxadiazole 37d (2,5-dichloro-3-(5-(3,4-dihydroxy-5-nitrophenyl)-1,2,4-oxadiazol-3-yl)-4,6-dimethylpyridine 1-oxide (BIA 9-1067)) was identified as a long-acting, purely peripheral inhibitor, which is currently under clinical evaluation as an adjunct to L-Dopa therapy of Parkinson's disease.
|
Inhibition of COMT in Wistar rat liver homogenates assessed as metanephrine formation at 3 mg/kg, po measured after 3 hrs relative to control
|
Rattus norvegicus
|
23.8
%
|
|
Journal : J. Med. Chem.
Title : Discovery of a long-acting, peripherally selective inhibitor of catechol-O-methyltransferase.
Year : 2010
Volume : 53
Issue : 8
First Page : 3396
Last Page : 3411
Authors : Kiss LE, Ferreira HS, Torrão L, Bonifácio MJ, Palma PN, Soares-da-Silva P, Learmonth DA.
Abstract : Novel nitrocatechol-substituted heterocycles were designed and evaluated for their ability to inhibit catechol-O-methyltransferase (COMT). Replacement of the pyrazole core of the initial hit 4 with a 1,2,4-oxadiazole ring resulted in a series of compounds endowed with longer duration of COMT inhibition. Incorporation of a pyridine N-oxide residue at position 3 of the 1,2,4-oxadiazole ring led to analogue 37f, which was found to possess activity comparable to entacapone and lower toxicity in comparison to tolcapone. Lead structure 37f was systematically modified in order to improve selectivity and duration of COMT inhibition as well as to minimize toxicity. Oxadiazole 37d (2,5-dichloro-3-(5-(3,4-dihydroxy-5-nitrophenyl)-1,2,4-oxadiazol-3-yl)-4,6-dimethylpyridine 1-oxide (BIA 9-1067)) was identified as a long-acting, purely peripheral inhibitor, which is currently under clinical evaluation as an adjunct to L-Dopa therapy of Parkinson's disease.
|
Inhibition of COMT in NMRI mouse liver homogenates assessed as metanephrine formation at 3 mg/kg, po measured after 3 hrs relative to control
|
Mus musculus
|
15.1
%
|
|
Journal : J. Med. Chem.
Title : Discovery of a long-acting, peripherally selective inhibitor of catechol-O-methyltransferase.
Year : 2010
Volume : 53
Issue : 8
First Page : 3396
Last Page : 3411
Authors : Kiss LE, Ferreira HS, Torrão L, Bonifácio MJ, Palma PN, Soares-da-Silva P, Learmonth DA.
Abstract : Novel nitrocatechol-substituted heterocycles were designed and evaluated for their ability to inhibit catechol-O-methyltransferase (COMT). Replacement of the pyrazole core of the initial hit 4 with a 1,2,4-oxadiazole ring resulted in a series of compounds endowed with longer duration of COMT inhibition. Incorporation of a pyridine N-oxide residue at position 3 of the 1,2,4-oxadiazole ring led to analogue 37f, which was found to possess activity comparable to entacapone and lower toxicity in comparison to tolcapone. Lead structure 37f was systematically modified in order to improve selectivity and duration of COMT inhibition as well as to minimize toxicity. Oxadiazole 37d (2,5-dichloro-3-(5-(3,4-dihydroxy-5-nitrophenyl)-1,2,4-oxadiazol-3-yl)-4,6-dimethylpyridine 1-oxide (BIA 9-1067)) was identified as a long-acting, purely peripheral inhibitor, which is currently under clinical evaluation as an adjunct to L-Dopa therapy of Parkinson's disease.
|
Inhibition of central COMT in Wistar rat liver homogenates assessed as metanephrine formation at 3 mg/kg, po measured after 9 hrs
|
Rattus norvegicus
|
50.0
%
|
|
Journal : J. Med. Chem.
Title : Discovery of a long-acting, peripherally selective inhibitor of catechol-O-methyltransferase.
Year : 2010
Volume : 53
Issue : 8
First Page : 3396
Last Page : 3411
Authors : Kiss LE, Ferreira HS, Torrão L, Bonifácio MJ, Palma PN, Soares-da-Silva P, Learmonth DA.
Abstract : Novel nitrocatechol-substituted heterocycles were designed and evaluated for their ability to inhibit catechol-O-methyltransferase (COMT). Replacement of the pyrazole core of the initial hit 4 with a 1,2,4-oxadiazole ring resulted in a series of compounds endowed with longer duration of COMT inhibition. Incorporation of a pyridine N-oxide residue at position 3 of the 1,2,4-oxadiazole ring led to analogue 37f, which was found to possess activity comparable to entacapone and lower toxicity in comparison to tolcapone. Lead structure 37f was systematically modified in order to improve selectivity and duration of COMT inhibition as well as to minimize toxicity. Oxadiazole 37d (2,5-dichloro-3-(5-(3,4-dihydroxy-5-nitrophenyl)-1,2,4-oxadiazol-3-yl)-4,6-dimethylpyridine 1-oxide (BIA 9-1067)) was identified as a long-acting, purely peripheral inhibitor, which is currently under clinical evaluation as an adjunct to L-Dopa therapy of Parkinson's disease.
|
Inhibition of central COMT in Wistar rat brain homogenates assessed as metanephrine formation at 3 mg/kg, po measured after 9 hrs
|
Rattus norvegicus
|
50.0
%
|
|
Journal : J. Med. Chem.
Title : Discovery of a long-acting, peripherally selective inhibitor of catechol-O-methyltransferase.
Year : 2010
Volume : 53
Issue : 8
First Page : 3396
Last Page : 3411
Authors : Kiss LE, Ferreira HS, Torrão L, Bonifácio MJ, Palma PN, Soares-da-Silva P, Learmonth DA.
Abstract : Novel nitrocatechol-substituted heterocycles were designed and evaluated for their ability to inhibit catechol-O-methyltransferase (COMT). Replacement of the pyrazole core of the initial hit 4 with a 1,2,4-oxadiazole ring resulted in a series of compounds endowed with longer duration of COMT inhibition. Incorporation of a pyridine N-oxide residue at position 3 of the 1,2,4-oxadiazole ring led to analogue 37f, which was found to possess activity comparable to entacapone and lower toxicity in comparison to tolcapone. Lead structure 37f was systematically modified in order to improve selectivity and duration of COMT inhibition as well as to minimize toxicity. Oxadiazole 37d (2,5-dichloro-3-(5-(3,4-dihydroxy-5-nitrophenyl)-1,2,4-oxadiazol-3-yl)-4,6-dimethylpyridine 1-oxide (BIA 9-1067)) was identified as a long-acting, purely peripheral inhibitor, which is currently under clinical evaluation as an adjunct to L-Dopa therapy of Parkinson's disease.
|
Inhibition of human KLF10 expressed in human HeLa cells assessed as reduction in transcriptional activity at 100 uM after 24 hrs by CACCC-responsive promoter driven TK-luciferase reporter gene assay
|
Homo sapiens
|
71.8
%
|
|
Journal : J. Med. Chem.
Title : Discovery of small molecule inhibitors to Krüppel-like factor 10 (KLF10): implications for modulation of T regulatory cell differentiation.
Year : 2015
Volume : 58
Issue : 3
First Page : 1466
Last Page : 1478
Authors : Khedkar SA, Sun X, Rigby AC, Feinberg MW.
Abstract : The Krüppel-like family of transcription factors (KLFs) constitute a subfamily of C2H2-type zinc finger proteins with distinct cell-type expression patterns and regulate functional aspects of cell growth and differentiation, activation, or development. KLF10 has been previously shown to critically regulate the acquisition of CD4+CD25+ T regulatory cell differentiation and function, an effect important to the maintenance of self-tolerance, immune suppression, and tumor immunosurveillance. To date, there are no selective pharmacological inhibitors to KLF10. Herein, we report on the discovery of first-in-class small molecule compounds that inhibit the KLF10-DNA interaction interface using computer-aided drug design (CADD) screens of chemical libraries. Interrogation of a "druggable" pocket in the second zinc finger of KLF10 revealed three small molecules, #48, #48-15, and #15-09, with similar scaffolds and binding patterns. Each of these small molecules inhibited KLF10-DNA binding and transcriptional activity, conversion of CD4+CD25- T cells to CD4+CD25+ T regulatory cells, and KLF10 target gene expression. Taken together, these findings support the feasibility of using CADD with functional assays to identify small molecules that target members of the KLF subfamily of transcription factors to regulate biological functions in health and disease. We hope these novel compounds will serve as useful mechanistic probes for KLF10-mediated effects and T regulatory cell biology.
|
PubChem BioAssay. GSK3B-pretreated HCT116 viability from Cell TiterGlo-IC50. (Class of assay: confirmatory)
|
None
|
264.97
nM
|
|
Title : PubChem BioAssay data set
|
Inhibition of rat COMT
|
Rattus norvegicus
|
2.2
nM
|
|
Journal : Bioorg. Med. Chem.
Title : Emerging targets and new small molecule therapies in Parkinson's disease treatment.
Year : 2016
Volume : 24
Issue : 7
First Page : 1419
Last Page : 1430
Authors : Zhang H, Tong R, Bai L, Shi J, Ouyang L.
Abstract : Parkinson's disease (PD) is a common chronic degenerative disease of the central nervous system. Due to a rapidly aging society worldwide, PD morbidity is on the rise; however, the treatment of PD with conventional drugs carries serious adverse reactions and cannot fix the root cause of PD, the degeneration of dopaminergic neurons, which limits conventional drug usage in clinical practice. In recent years, research on the pathogenesis of PD and its clinical manifestations has led to the discovery of an increasing number of novel targets in PD, including several small molecule targeted compounds. In this paper, we analyze and summarize the most recently published PD literature and review several recently discovered novel targets in PD and their small molecule targeted pharmacologically active agents based on their mechanisms of action and pharmacodynamic profiles.
|
Inhibition of human recombinant His-tagged soluble COMT expressed in Escherichia coli BL21 using aesculetin as substrate after 60 mins by microplate assay in presence of SAM
|
Homo sapiens
|
127.0
nM
|
|
Journal : J. Med. Chem.
Title : Identification of Potential Off-target Toxicity Liabilities of Catechol-O-methyltransferase Inhibitors by Differential Competition Capture Compound Mass Spectrometry.
Year : 2016
Volume : 59
Issue : 10
First Page : 4664
Last Page : 4675
Authors : von Kleist L, Michaelis S, Bartho K, Graebner O, Schlief M, Dreger M, Schrey AK, Sefkow M, Kroll F, Koester H, Luo Y.
Abstract : Structurally related inhibitors of a shared therapeutic target may differ regarding potential toxicity issues that are caused by different off-target bindings. We devised a differential competition capture compound mass spectrometry (dCCMS) strategy to effectively differentiate off-target profiles. Tolcapone and entacapone are potent inhibitors of catechol-O-methyl transferase (COMT) for the treatment of Parkinson's disease. Tolcapone is also known for its hepatotoxic side effects even though it is therapeutically more potent than entacapone. Here, we identified 3-hydroxyisobutyryl-CoA hydrolase (HIBCH) as a possible toxicity-causing off-target of tolcapone, and this protein is not bound by the less toxic COMT inhibitor entacapone. Moreover, two novel compounds from a focused library synthesized in-house, N(2),N(2),N(3),N(3)-tetraethyl-6,7-dihydroxy-5-nitronaphthalene-2,3-dicarboxamide and 5-(3,4-dihydroxy-5-nitrobenzylidene)-3-ethylthiazolidine-2,4-dione, were utilized to gain insight into the structure-activity relationships in binding to COMT and the novel off-target HIBCH. These compounds, especially N(2),N(2),N(3),N(3)-tetraethyl-6,7-dihydroxy-5-nitronaphthalene-2,3-dicarboxamide, could serve as starting point for the development of improved and more specific COMT inhibitors.
|
Inhibition of c-terminal hexa-His tagged human MB-COMT (unknown origin)
|
Homo sapiens
|
1.0
nM
|
|
Journal : J Med Chem
Title : Optimization of 8-Hydroxyquinolines as Inhibitors of Catechol O-Methyltransferase.
Year : 2018
Volume : 61
Issue : 21
First Page : 9647
Last Page : 9665
Authors : Buchler I, Akuma D, Au V, Carr G, de León P, DePasquale M, Ernst G, Huang Y, Kimos M, Kolobova A, Poslusney M, Wei H, Swinnen D, Montel F, Moureau F, Jigorel E, Schulze MED, Wood M, Barrow JC.
Abstract : A series of 8-hydroxy quinolines were identified as potent inhibitors of catechol O-methyltransferase (COMT) with selectivity for the membrane-bound form of the enzyme. Small substituents at the 7-position of the quinoline were found to increase metabolic stability without sacrificing potency. Compounds with good pharmacokinetics and brain penetration were identified and demonstrated in vivo modulation of dopamine metabolites in the brain. An X-ray cocrystal structure of compound 21 in the S-COMT active site shows chelation of the active site magnesium similar to catechol-based inhibitors. These compounds should prove useful for treatment of many neurological and psychiatric conditions associated with compromised cortical dopamine signaling.
|
Binding affinity to transthyretin (unknown origin) by ITC method
|
Homo sapiens
|
20.6
nM
|
|
Journal : J Med Chem
Title : Enthalpy-Driven Stabilization of Transthyretin by AG10 Mimics a Naturally Occurring Genetic Variant That Protects from Transthyretin Amyloidosis.
Year : 2018
Volume : 61
Issue : 17
First Page : 7862
Last Page : 7876
Authors : Miller M, Pal A, Albusairi W, Joo H, Pappas B, Haque Tuhin MT, Liang D, Jampala R, Liu F, Khan J, Faaij M, Park M, Chan W, Graef I, Zamboni R, Kumar N, Fox J, Sinha U, Alhamadsheh M.
Abstract : Transthyretin (TTR) amyloid cardiomyopathy (ATTR-CM) is a fatal disease with no available disease-modifying therapies. While pathogenic TTR mutations (TTRm) destabilize TTR tetramers, the T119M variant stabilizes TTRm and prevents disease. A comparison of potency for leading TTR stabilizers in clinic and structural features important for effective TTR stabilization is lacking. Here, we found that molecular interactions reflected in better binding enthalpy may be critical for development of TTR stabilizers with improved potency and selectivity. Our studies provide mechanistic insights into the unique binding mode of the TTR stabilizer, AG10, which could be attributed to mimicking the stabilizing T119M variant. Because of the lack of animal models for ATTR-CM, we developed an in vivo system in dogs which proved appropriate for assessing the pharmacokinetics-pharmacodynamics profile of TTR stabilizers. In addition to stabilizing TTR, we hypothesize that optimizing the binding enthalpy could have implications for designing therapeutic agents for other amyloid diseases.
|
Binding affinity to transthyretin V122I mutant (unknown origin) by ITC method
|
Homo sapiens
|
56.0
nM
|
|
Journal : J Med Chem
Title : Enthalpy-Driven Stabilization of Transthyretin by AG10 Mimics a Naturally Occurring Genetic Variant That Protects from Transthyretin Amyloidosis.
Year : 2018
Volume : 61
Issue : 17
First Page : 7862
Last Page : 7876
Authors : Miller M, Pal A, Albusairi W, Joo H, Pappas B, Haque Tuhin MT, Liang D, Jampala R, Liu F, Khan J, Faaij M, Park M, Chan W, Graef I, Zamboni R, Kumar N, Fox J, Sinha U, Alhamadsheh M.
Abstract : Transthyretin (TTR) amyloid cardiomyopathy (ATTR-CM) is a fatal disease with no available disease-modifying therapies. While pathogenic TTR mutations (TTRm) destabilize TTR tetramers, the T119M variant stabilizes TTRm and prevents disease. A comparison of potency for leading TTR stabilizers in clinic and structural features important for effective TTR stabilization is lacking. Here, we found that molecular interactions reflected in better binding enthalpy may be critical for development of TTR stabilizers with improved potency and selectivity. Our studies provide mechanistic insights into the unique binding mode of the TTR stabilizer, AG10, which could be attributed to mimicking the stabilizing T119M variant. Because of the lack of animal models for ATTR-CM, we developed an in vivo system in dogs which proved appropriate for assessing the pharmacokinetics-pharmacodynamics profile of TTR stabilizers. In addition to stabilizing TTR, we hypothesize that optimizing the binding enthalpy could have implications for designing therapeutic agents for other amyloid diseases.
|
Antiviral activity determined as inhibition of SARS-CoV-2 induced cytotoxicity of Caco-2 cells at 10 uM after 48 hours by high content imaging
|
Homo sapiens
|
0.76
%
|
|
Title : Identification of inhibitors of SARS-CoV-2 in-vitro cellular toxicity in human (Caco-2) cells using a large scale drug repurposing collection
Year : 2020
Authors : Bernhard Ellinger, Denisa Bojkova, Andrea Zaliani, Jindrich Cinatl, Carsten Claussen, Sandra Westhaus, Jeanette Reinshagen, Maria Kuzikov, Markus Wolf, Gerd Geisslinger, Philip Gribbon, Sandra Ciesek
Abstract : To identify possible candidates for progression towards clinical studies against SARS-CoV-2, we screened a well-defined collection of 5632 compounds including 3488 compounds which have undergone clinical investigations (marketed drugs, phases 1 -3, and withdrawn) across 600 indications. Compounds were screened for their inhibition of viral induced cytotoxicity using the human epithelial colorectal adenocarcinoma cell line Caco-2 and a SARS-CoV-2 isolate. The primary screen of 5632 compounds gave 271 hits. A total of 64 compounds with IC50 <20 µM were identified, including 19 compounds with IC50 < 1 µM. Of this confirmed hit population, 90% have not yet been previously reported as active against SARS-CoV-2 in-vitro cell assays. Some 37 of the actives are launched drugs, 19 are in phases 1-3 and 10 pre-clinical. Several inhibitors were associated with modulation of host pathways including kinase signaling P53 activation, ubiquitin pathways and PDE activity modulation, with long chain acyl transferases were effective viral inhibitors.
|
Inhibition of synthetic AcPHF6 peptide aggregation in pH 7.4 phosphate buffer assessed as reduction in fluorescence intensity at 50 uM and measured every minute over 2 hrs with 5 secs shaking prior to each reading by ThT fluorescence assay
|
None
|
64.6
%
|
|
Journal : Eur J Med Chem
Title : Repurposing nitrocatechols: 5-Nitro-α-cyanocarboxamide derivatives of caffeic acid and caffeic acid phenethyl ester effectively inhibit aggregation of tau-derived hexapeptide AcPHF6.
Year : 2019
Volume : 167
First Page : 146
Last Page : 152
Authors : Silva T, Mohamed T, Shakeri A, Rao PPN, Soares da Silva P, Remião F, Borges F.
Abstract : Polyphenols like caffeic acid and its phenethyl ester have been associated with potent anti-aggregating activity. Accordingly, we screened a library of polyphenols and synthetic derivatives thereof for their capacity to inhibit tau-aggregation using a thioflavin T-based fluorescence method. Our results show that the nitrocatechol scaffold is required for a significant anti-aggregating activity, which is enhanced by introducing bulky substituents at the side chain. A remarkable increase in activity was observed for α-cyanocarboxamide derivatives 26-27. Molecular docking studies showed that the amide bond provides superior conformational stability in the steric zipper assembly of tau, which drives the increase in activity. We also found that derivatives 24-27 were potent chelators of copper(II) - a property of pharmacological significance in abnormal protein aggregation. These small molecules can provide promising leads to develop new drugs for tauopathies and AD. These findings open a new window on the repurposing of nitrocatechols beyond their established role as catechol-O-methyltransferase inhibitors.
|
Inhibition of DENV2 NS2B-NS3 serine protease expressed using Benzoyl-Nle-Lys-Arg-Arg-AMC as substrate measured preincubated for 3 mins followed by substrate addition by fluorescence assay
|
Dengue virus 2
|
640.0
nM
|
|
Journal : Eur J Med Chem
Title : Recent update on anti-dengue drug discovery.
Year : 2019
Volume : 176
First Page : 431
Last Page : 455
Authors : Dighe SN, Ekwudu O, Dua K, Chellappan DK, Katavic PL, Collet TA.
Abstract : Dengue is the most important arthropod-borne viral disease of humans, with more than half of the global population living in at-risk areas. Despite the negative impact on public health, there are no antiviral therapies available, and the only licensed vaccine, Dengvaxia<sup>®</sup>, has been contraindicated in children below nine years of age. In an effort to combat dengue, several small molecules have entered into human clinical trials. Here, we review anti-DENV molecules and their drug targets that have been published within the past five years (2014-2018). Further, we discuss their probable mechanisms of action and describe a role for classes of clinically approved drugs and also an unclassified class of anti-DENV agents. This review aims to enhance our understanding of novel agents and their cognate targets in furthering innovations in the use of small molecules for dengue drug therapies.
|
Inhibition of human MB-COMT expressed in HEK293 cells using dopamine as substrate and SAM as cofactor preincubated for 30 mins followed by substrate addition and measured after 40 mins by HTRF assay
|
Homo sapiens
|
1.0
nM
|
|
Journal : ACS Med Chem Lett
Title : Synthesis and Evaluation of Bicyclic Hydroxypyridones as Inhibitors of Catechol <i>O</i>-Methyltransferase.
Year : 2019
Volume : 10
Issue : 11
First Page : 1573
Last Page : 1578
Authors : Ernst G, Akuma D, Au V, Buchler IP, Byers S, Carr GV, Defays S, de León P, Demaude T, DePasquale M, Durieu V, Huang Y, Jigorel E, Kimos M, Kolobova A, Montel F, Moureau F, Poslusney M, Swinnen D, Vandergeten MC, Van Houtvin N, Wei H, White N, Wood M, Barrow JC.
Abstract : A series of bicyclic pyridones were identified as potent inhibitors of catechol <i>O</i>-methyltransferase (COMT). Substituted benzyl groups attached to the basic nitrogen of the core scaffold gave the most potent inhibitors within this series. Rat pharmacokinetic studies showed medium to high levels of clearance for this series, but with high free fraction due to remarkably low levels of protein and tissue binding. In rat biomarker studies, levels of unbound drug exposure are seen in the brain, which exceed their respective IC<sub>50</sub>s, leading to changes in the levels of dopamine metabolites in a manner consistent with COMT inhibition.
|
Inhibition of human KLF10 expressed in human HeLa cells assessed as reduction in KLF10-mediated transcriptional activity at 100 uM incubated for 24 hrs by luciferase reporter assay relative to control
|
Homo sapiens
|
71.8
%
|
|
Title : Use of small molecule inhibitors to klf10 for modulation of t regulatory cells and cancer immunotherapy
|
Inhibition of S-COMT in Wistar rat liver assessed as metanephrine formation preincubated for 20 mins followed by addition of adrenaline as substrate and SAM measured after 5 mins by chromatographic analysis
|
Rattus norvegicus
|
30.59
nM
|
|
Journal : J Med Chem
Title : Development of Blood-Brain Barrier Permeable Nitrocatechol-Based Catechol O-Methyltransferase Inhibitors with Reduced Potential for Hepatotoxicity.
Year : 2016
Volume : 59
Issue : 16
First Page : 7584
Last Page : 7597
Authors : Silva T, Mohamed T, Shakeri A, Rao PP, Martínez-González L, Pérez DI, Martínez A, Valente MJ, Garrido J, Uriarte E, Serrão P, Soares-da-Silva P, Remião F, Borges F.
Abstract : Recent efforts have been focused on the development of centrally active COMT inhibitors, which can be valuable assets for neurological disorders such as Parkinson's disease, due to the severe hepatotoxicity risk associated with tolcapone. New nitrocatechol COMT inhibitors based on naturally occurring caffeic acid and caffeic acid phenethyl ester were developed. All nitrocatechol derivatives displayed potent inhibition of peripheral and cerebral COMT within the nanomolar range. Druglike derivatives 13, 15, and 16 were predicted to cross the blood-brain barrier in vitro and were significantly less toxic than tolcapone and entacapone when incubated at 50 μM with rat primary hepatocytes. Moreover, their unique acidity and electrochemical properties decreased the chances of formation of reactive quinone-imines and, as such, the potential for hepatotoxicity. The binding mode of 16 confirmed that the major interactions with COMT were established via the nitrocatechol ring, allowing derivatization of the side chain for future lead optimization efforts.
|
Inhibition of MB-COMT in Wistar rat brain assessed as metanephrine formation preincubated for 20 mins followed by addition of adrenaline as substrate and SAM measured after 15 mins by chromatographic analysis
|
Rattus norvegicus
|
0.912
nM
|
|
Inhibition of MB-COMT in Wistar rat brain assessed as metanephrine formation preincubated for 20 mins followed by addition of adrenaline as substrate and SAM measured after 15 mins by chromatographic analysis
|
Rattus norvegicus
|
0.91
nM
|
|
Journal : J Med Chem
Title : Development of Blood-Brain Barrier Permeable Nitrocatechol-Based Catechol O-Methyltransferase Inhibitors with Reduced Potential for Hepatotoxicity.
Year : 2016
Volume : 59
Issue : 16
First Page : 7584
Last Page : 7597
Authors : Silva T, Mohamed T, Shakeri A, Rao PP, Martínez-González L, Pérez DI, Martínez A, Valente MJ, Garrido J, Uriarte E, Serrão P, Soares-da-Silva P, Remião F, Borges F.
Abstract : Recent efforts have been focused on the development of centrally active COMT inhibitors, which can be valuable assets for neurological disorders such as Parkinson's disease, due to the severe hepatotoxicity risk associated with tolcapone. New nitrocatechol COMT inhibitors based on naturally occurring caffeic acid and caffeic acid phenethyl ester were developed. All nitrocatechol derivatives displayed potent inhibition of peripheral and cerebral COMT within the nanomolar range. Druglike derivatives 13, 15, and 16 were predicted to cross the blood-brain barrier in vitro and were significantly less toxic than tolcapone and entacapone when incubated at 50 μM with rat primary hepatocytes. Moreover, their unique acidity and electrochemical properties decreased the chances of formation of reactive quinone-imines and, as such, the potential for hepatotoxicity. The binding mode of 16 confirmed that the major interactions with COMT were established via the nitrocatechol ring, allowing derivatization of the side chain for future lead optimization efforts.
|
SARS-CoV-2 3CL-Pro protease inhibition percentage at 20µM by FRET kind of response from peptide substrate
|
Severe acute respiratory syndrome coronavirus 2
|
35.84
%
|
|
SARS-CoV-2 3CL-Pro protease inhibition percentage at 20µM by FRET kind of response from peptide substrate
|
Severe acute respiratory syndrome coronavirus 2
|
18.23
%
|
|
SARS-CoV-2 3CL-Pro protease inhibition percentage at 20µM by FRET kind of response from peptide substrate
|
Severe acute respiratory syndrome coronavirus 2
|
7.618
%
|
|
Title : Identification of inhibitors of SARS-Cov2 M-Pro enzymatic activity using a small molecule repurposing screen
Year : 2020
Authors : Maria Kuzikov, Elisa Costanzi, Jeanette Reinshagen, Francesca Esposito, Laura Vangeel, Markus Wolf, Bernhard Ellinger, Carsten Claussen, Gerd Geisslinger, Angela Corona, Daniela Iaconis, Carmine Talarico, Candida Manelfi, Rolando Cannalire, Giulia Rossetti, Jonas Gossen, Simone Albani, Francesco Musiani, Katja Herzog, Yang Ye, Barbara Giabbai, Nicola Demitri, Dirk Jochmans, Steven De Jonghe, Jasper Rymenants, Vincenzo Summa, Enzo Tramontano, Andrea R. Beccari, Pieter Leyssen, Paola Storici, Johan Neyts, Philip Gribbon, and Andrea Zaliani
Abstract : Compound repurposing is an important strategy being pursued in the identification of effective treatment against the SARS-CoV-2 infection and COVID-19 disease. In this regard, SARS-CoV-2 main protease (M-Pro), also termed 3CL-Pro, is an attractive drug target as it plays a central role in viral replication by processing the viral polyprotein into 11 non-structural proteins. We report the results of a screening campaign involving ca 8.7 K compounds containing marketed drugs, clinical and preclinical candidates, and chemicals regarded as safe in humans. We confirmed previously reported inhibitors of 3CL-Pro, but we have also identified 68 compounds with IC50 lower than 1 uM and 127 compounds with IC50 lower than 5 uM. Profiling showed 67% of confirmed hits were selective (> 5 fold) against other Cys- and Ser- proteases (Chymotrypsin and Cathepsin-L) and MERS 3CL-Pro. Selected compounds were also analysed in their binding characteristics.
|
Antiviral activity determined as inhibition of SARS-CoV-2 induced cytotoxicity of VERO-6 cells at 10 uM after 48 hours exposure to 0.01 MOI SARS CoV-2 virus by high content imaging
|
Chlorocebus sabaeus
|
0.04
%
|
|
Antiviral activity determined as inhibition of SARS-CoV-2 induced cytotoxicity of VERO-6 cells at 10 uM after 48 hours exposure to 0.01 MOI SARS CoV-2 virus by high content imaging
|
Chlorocebus sabaeus
|
0.17
%
|
|
Antiviral activity determined as inhibition of SARS-CoV-2 induced cytotoxicity of VERO-6 cells at 10 uM after 48 hours exposure to 0.01 MOI SARS CoV-2 virus by high content imaging
|
Chlorocebus sabaeus
|
0.28
%
|
|
Antiviral activity determined as inhibition of SARS-CoV-2 induced cytotoxicity of VERO-6 cells at 10 uM after 48 hours exposure to 0.01 MOI SARS CoV-2 virus by high content imaging
|
Chlorocebus sabaeus
|
0.28
%
|
|
Antiviral activity determined as inhibition of SARS-CoV-2 induced cytotoxicity of VERO-6 cells at 10 uM after 48 hours exposure to 0.01 MOI SARS CoV-2 virus by high content imaging
|
Chlorocebus sabaeus
|
0.04
%
|
|
Antiviral activity determined as inhibition of SARS-CoV-2 induced cytotoxicity of VERO-6 cells at 10 uM after 48 hours exposure to 0.01 MOI SARS CoV-2 virus by high content imaging
|
Chlorocebus sabaeus
|
0.17
%
|
|
Title : Cytopathic SARS-Cov2 screening on VERO-E6 cells in a large repurposing effort
Year : 2020
Authors : Andrea Zaliani, Laura Vangeel, Jeanette Reinshagen, Daniela Iaconis, Maria Kuzikov, Oliver Keminer, Markus Wolf, Bernhard Ellinger, Francesca Esposito, Angela Corona, Enzo Tramontano, Candida Manelfi, Katja Herzog, Dirk Jochmans, Steven De Jonghe, Winston Chiu, Thibault Francken, Joost Schepers, Caroline Collard, Kayvan Abbasi, Carsten Claussen , Vincenzo Summa, Andrea R. Beccari, Johan Neyts, Philip Gribbon and Pieter Leyssen
Abstract : Worldwide, there are intensive efforts to identify repurposed drugs as potential therapies against SARS-CoV-2 infection and the associated COVID-19 disease. To date, the anti-inflammatory drug dexamethasone and (to a lesser extent) the RNA-polymerase inhibitor remdesivir have been shown to be effective in reducing mortality and patient time to recovery, respectively, in patients. Here, we report the results of a phenotypic screening campaign within an EU-funded project (H2020-EXSCALATE4COV) aimed at extending the repertoire of anti-COVID therapeutics through repurposing of available compounds and highlighting compounds with new mechanisms of action against viral infection. We screened 8702 molecules from different repurposing libraries, to reveal 110 compounds with an anti-cytopathic IC50 < 20 µM. From this group, 18 with a safety index greater than 2 are also marketed drugs, making them suitable for further study as potential therapies against COVID-19. Our result supports the idea that a systematic approach to repurposing is a valid strategy to accelerate the necessary drug discovery process.
|
Inhibition of NS2B-NS3 protease in DENV2proHeLa system assessed as inhibition of luciferase signal at 12.5 uM incubated for 24 hrs by luciferase reporter gene assay
|
Dengue virus 2
|
59.0
%
|
|
|
Binding affinity to TTR V3OM mutant (unknown origin) expressed in Escherichia coli incubated for 60 mins by tryptophan intrinsic fluorescence method
|
Homo sapiens
|
980.0
nM
|
|
|
Binding affinity to TTR V30M mutant (unknown origin) by isothermal titration calorimetry
|
Homo sapiens
|
95.0
nM
|
|
