Synthetic studies towards pentacyclic quassinoids: Facile and stereocontrolled construction of the E ring
作者:Tony K.M. Shing、Xue Y. Zhu、Thomas C.W. Mak
DOI:10.1016/0957-4166(96)00062-6
日期:1996.3
The CE ring 15 of the pentacyclic quassinoid skeleton is fabricated from (S)-carvone involving regioselective bishydroxylmethylation, acetonation, stereocontrolled epoxidation and epoxymethano-bridge formation, selective protection, deprotection, and oxidation. (C) 1996 Elsevier Science Ltd