Total Synthesis of taxol. 2. Construction of A and C ring intermediates and initial attempts to construct the ABC ring system
作者:K. C. Nicolaou、J.-J. Liu、Z. Yang、H. Ueno、E. J. Sorensen、C. F. Claiborne、R. K. Guy、C.-K. Hwang、M. Nakada、P. G. Nantermet
DOI:10.1021/ja00107a007
日期:1995.1
A method for the formation of Taxol's ABC ring system has been developed. General methods for the synthesis of versatile synthons for Taxol's A ring (8) and C ring (55) are presented. A model study using a simplified C ring synthon (17) confirmed the viability of the sequential Shapiro-McMurry strategy for formation of Taxol's B ring. Careful exploration of the chemistry of various A-B ring conjugates allowed the development of a successful method for formation of the B ring in a more functionalized system.