Application of Complex Aldol Reactions to the Total Synthesis of Phorboxazole B
作者:David A. Evans、Duke M. Fitch、Thomas E. Smith、Victor J. Cee
DOI:10.1021/ja002356g
日期:2000.10.1
The synthesis of phorboxazole B has been accomplished in 27 linear steps and an overall yield of 12.6%. The absolute stereochemistry of the C4−C12, C33−C38, and C13−C19 fragments was established utilizing catalytic asymmetric aldol methodology, while the absolute stereochemistry of the C20−C32 fragment was derived from an auxiliary-based asymmetric aldol reaction. All remaining chirality was incorporated