A Cycloaddition Cascade Approach to the Total Synthesis of (−)-FR182877
作者:David A. Evans、Jeremy T. Starr
DOI:10.1021/ja037643+
日期:2003.11.1
entire structure was established using two (4R)-4-benzyl-2-oxazolidinone-mediated boron aldol reactions. A 19-membered macrocarbocycle was synthesized by the coupling of two fragments using a regioselective Suzuki coupling (17 + 23 --> 26; 84%) and macrocyclization of a beta-keto ester (30 --> 31; 77%). Oxidation of 31 triggered a sequence of stereoselective transannular Diels-Alder reactions (32 -->34;