Synthesis of the C21–C34-segment of the aplyronines using the dimer of methylketene
作者:Michael A Calter、Xin Guo
DOI:10.1016/s0040-4020(02)00723-8
日期:2002.8
This report describes a convergent synthesis of the C21–C34-segment of aplyronine. The starting point for both halves of this segment was the dimer of methylketene, readily available in either enantiomeric form by asymmetric catalysis. Diastereoselective reduction and functional group manipulation afforded the partners for a Wittig coupling reaction. The appropriate choice of oxygen protecting groups