beta-lactam; serine-protease inhibition; elastase; ab initio calculation
Abstract :
[en] A series of 1,4-bis(alkoxycarbonyl)azetidin-2-ones, designed as potential suicide-inhibitors of serine proteases, has been synthesized and evaluated against porcine pancreatic elastase (PPE). The most active compound (K(i)similar to10 muM; reversible inhibitor) was equipped with phenethyloxycarbonyl and benzyloxycarbonyl side-chains at positions N1 and C4, respectively, with the (S)-configuration. H-1 NMR spectroscopic analysis of the reaction mixtures showed that the ester function is preferentially hydrolyzed, in both chemical and enzyme-catalyzed reactions, with regard to the azetidinone and urethane functions. Considering the three potentially sensitive carbonyl functions and the two stereoisomers, ab initio calculations were performed to determine the energetic barriers required to reach the transition state structures of hydrolysis in a model of the enzyme pocket. (C) 2002 Elsevier Science Ltd. All rights reserved.
Disciplines :
Chemistry
Author, co-author :
Gérard, Stéphane
Dive, Georges ; Université de Liège - ULiège > Centre d'ingénierie des protéines
Clamot, Brigitte
Touillaux, Roland
Marchand-Brynaert, Jacqueline
Language :
English
Title :
Synthesis, hydrolysis, biochemical and theoretical evaluation of 1,4-bis(alkoxycarbonyl)azetidin-2-ones as potential elastase inhibitors
Publication date :
18 March 2002
Journal title :
Tetrahedron
ISSN :
0040-4020
Publisher :
Pergamon-Elsevier Science Ltd, Oxford, United Kingdom
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