Intermediates for the synthesis of epothilones and methods for their preparation
申请人:Novartis AG
公开号:US06350878B1
公开(公告)日:2002-02-26
The invention relates to a method of synthesis for a compound of formula (I),
wherein R is a heterocyclyl moiety and X1, X2, X3 and X4 are, independently of each other, protecting groups, which is appropriate for the synthesis of epothilone B and desoxyepothione B.