were introduced, and systematic fluorine, bromine, and phenyl scans for phenylalanine in the P2 position were performed. Moreover, the N-terminal protection was varied. Kinetic investigations were carried out with cathepsin L, S, and K as well as papain. Changes in the backbone structure of the parent N-(tert-butoxycarbonyl)-phenylalanyl-glycine-nitrile (16), such as the introduction of an R-configured
A comparative study of warheads for design of cysteine protease inhibitors
作者:Daniel G. Silva、Jean F.R. Ribeiro、Daniela De Vita、Lorenzo Cianni、Caio Haddad Franco、Lucio H. Freitas-Junior、Carolina Borsoi Moraes、Josmar R. Rocha、Antonio C.B. Burtoloso、Peter W. Kenny、Andrei Leitão、Carlos A. Montanari
DOI:10.1016/j.bmcl.2017.10.002
日期:2017.11
replacing a nitrile group with alternative warheads were explored. The oxime was almost an order of magnitude more potent than the corresponding nitrile and has the potential to provide access to the prime side of the catalytic site. Dipeptide aldehydes and azadipeptide nitriles were found to be two orders of magnitude more potent cruzain inhibitors than the corresponding dipeptidenitriles although potency
ATG4B or autophagin-1 is a cysteine protease that cleaves ATG8 family proteins. ATG4B plays essential roles in the autophagosome formation and the autophagy pathway. Herein we disclose the design and structural modifications of a series of fluoromethylketone (FMK)-based peptidomimetics as highly potent ATG4B inhibitors. Their structure activity relationship (SAR) and protease selectivity are also discussed.