Asymmetric Synthesis of 1,2-Dioxolane-3-acetic Acids: Synthesis and Configurational Assignment of Plakinic Acid A
作者:Peng Dai、Tony K. Trullinger、Xuejun Liu、Patrick H. Dussault
DOI:10.1021/jo0522254
日期:2006.3.1
The first asymmetricsynthesis of 1,2-dioxolane-3-acetic acids is reported. Key features include the stereoselective opening of enantiomerically enriched oxetanes by hydrogen peroxide, conversion of the resulting 4-hydroperoxy-2-alkanols to 3-alkoxy-1,2-dioxolanes, and Lewis acid mediated homologation of the latter with a thioester silyl ketene acetal. The approach is modeled on 3,5-dimethyl-5-hexadecyl-1