A Successful Replacement of Phenols with Isocyanides in the Bargellini Reaction: Synthesis of 3-Carboxamido-Isobutyric Acids
作者:Mariateresa Giustiniano、Sveva Pelliccia、Ubaldina Galli、Jussara Amato、Fabio Travagin、Ettore Novellino、Gian Cesare Tron
DOI:10.1021/acs.joc.6b02130
日期:2016.11.18
Old multicomponent reactions are still a source of inspiration for discovering novel combinations of three or more reactants. A simple idea is to replace one of the educts of a known multicomponent reaction with another functional group and still be able to mimic the same reactivity. Following this line of thought, we report a three-component reaction in which isocyanides are able to open the epoxide
Azetidine-2,4-diones (4-Oxo-β-lactams) as Scaffolds for Designing Elastase Inhibitors
作者:Jalmira Mulchande、Rita C. Guedes、Wing-Yin Tsang、Michael I. Page、Rui Moreira、Jim Iley
DOI:10.1021/jm701257h
日期:2008.3.1
N-(4-aryl) position in 3,3-diethyl- N-aryl derivatives increasing the rate of enzyme acylation and generating a Hammett rho-value of 0.65. Compared with a rho-value of 0.96 for the rates of alkaline hydrolysis of the same series, this is indicative of an earlier transitionstate for the enzyme-catalyzed reaction. Docking studies indicate favorable noncovalent interactions of the inhibitor with the enzyme