Cyclobutanone Mimics of Penicillins: Effects of Substitution on Conformation and Hemiketal Stability
作者:Jarrod W. Johnson、Darryl P. Evanoff、Marc E. Savard、Gerald Lange、Timothy R. Ramadhar、Abdeljalil Assoud、Nicholas J. Taylor、Gary I. Dmitrienko
DOI:10.1021/jo801274m
日期:2008.9.19
carbocyclic analogues of penicillins to undergo hydrate and hemiketal formation is central to their ability to function as beta-lactamase inhibitors. 2-Thiabicyclo[3.2.0]heptan-6-one-4-carboxylates with alkoxy functionality at C3 have been prepared through two complementary diastereoselective substitution reactions following a highly stereoselective chlorination with sulfuryl chloride. We have found that carbocyclic