Synthesis and evaluation of vinyl sulfones as caspase-3 inhibitors. A structure–activity study
摘要:
The first structure activity relationship study of vinyl sulfones as caspase-3 inhibitors is reported. A series of 12 vinyl sulfones was synthesized and evaluated for two downstream caspases (caspases-3 and -7). Dipeptidyl derivatives were significantly superior to their counterparts containing only Asp at P(1), as caspase-3 inhibitors. Fmoc-Val-Asp-trans-CH=CH-SO(2)Me was the most potent inhibitor of caspase-3 in the series, with a IC(50) of 29 mu M and a second-order rate constant of inactivation, k(inact)/(K)i, of 1.5 M(-1) s(-1) Computational studies suggest that the second amino acid occupies position S(3) of the enzyme. In addition, Fmoc-Val-Asp-trans-CH=CH-SO(2)Ph was inactive for caspase-7 for the tested concentrations. (C) 2010 Elsevier Masson SAS. All rights reserved.
Synthesis and evaluation of vinyl sulfones as caspase-3 inhibitors. A structure–activity study
作者:Ana S. Newton、Paulo M.C. Glória、Lídia M. Gonçalves、Daniel J.V.A. dos Santos、Rui Moreira、Rita C. Guedes、Maria M.M. Santos
DOI:10.1016/j.ejmech.2010.05.039
日期:2010.9
The first structure activity relationship study of vinyl sulfones as caspase-3 inhibitors is reported. A series of 12 vinyl sulfones was synthesized and evaluated for two downstream caspases (caspases-3 and -7). Dipeptidyl derivatives were significantly superior to their counterparts containing only Asp at P(1), as caspase-3 inhibitors. Fmoc-Val-Asp-trans-CH=CH-SO(2)Me was the most potent inhibitor of caspase-3 in the series, with a IC(50) of 29 mu M and a second-order rate constant of inactivation, k(inact)/(K)i, of 1.5 M(-1) s(-1) Computational studies suggest that the second amino acid occupies position S(3) of the enzyme. In addition, Fmoc-Val-Asp-trans-CH=CH-SO(2)Ph was inactive for caspase-7 for the tested concentrations. (C) 2010 Elsevier Masson SAS. All rights reserved.