The first preparation of enolizable silylimines is reported. The “in situ” trapping of these species with lithium enolates of esters gives rise in fairly good yields to N-unsubstituted 4-alkyl-β-lactams.
A Concise Synthesis of Silanediol-Based Transition-State Isostere Inhibitors of Proteases
作者:Michael G. Organ、Christophe Buon、Carl P. Decicco、Andrew P. Combs
DOI:10.1021/ol026195s
日期:2002.8.1
[GRAPHICS]An efficient synthesis of silanediol-based transition-state inhibitors of proteases is described. A new convergent synthesis has been optimized by using a two-step sequence of hydrosilylation followed by the addition of a silyllithio species to an imine. The method should be applicable to the synthesis of a wide variety of silanediol isosteres to probe the utility of this unique transition-state isostere.