Highly Enantioselective Mukaiyama Aldol Reactions Catalyzed by a Chiral Oxazaborolidinium Ion: Total Synthesis of (−)-Inthomycin C
作者:Bidyut Kumar Senapati、Lizhu Gao、Sung Il Lee、Geum-Sook Hwang、Do Hyun Ryu
DOI:10.1021/ol102234k
日期:2010.11.19
A cationic oxazaborolidinium-catalyzed asymmetric Mukaiyama aldol reaction of (1-methoxy-2-methyl-propenyloxy)-trimethylsilane with various aldehydes including α,β-disubstituted acroleins has been developed in high yields and enantioselectivities. The synthetic utility of this methodology was demonstrated in the first short synthesis of naturally occurring inthomycin C in high enantiopurity.
(1-甲氧基-2-甲基-丙烯氧基)-三甲基硅烷与各种醛类(包括α,β-二取代的丙烯醛)的阳离子恶唑硼烷鎓催化的不对称Mukaiyama aldol反应已得到高收率和对映选择性。该方法的合成效用在高对映体纯度的天然ththomycin C的首次短合成中得到了证明。