作者:Sven Hofman、Ling-Jie Gao、Hilde Van Dingenen、Noël G. C. Hosten、Dirk Van Haver、Pierre J. De Clercq、Marco Milanesio、Davide Viterbo
DOI:10.1002/1099-0690(200108)2001:15<2851::aid-ejoc2851>3.0.co;2-u
日期:2001.8
The intramolecular cycloaddition of 5 yields the unsaturated lactones 17a, 17b, and 17c as three major isomeric adducts. These were further reduced to the corresponding derivatives 21a, 21b, and 21c, which are intermediates for the synthesis of (+)-himbacine and stereoisomers thereof. Precursor 5 was obtained in a short convergent way using Sonogashira and Stille coupling reactions as the main C−C
5 的分子内环加成产生不饱和内酯 17a、17b 和 17c 作为三种主要的异构加合物。这些进一步还原为相应的衍生物 21a、21b 和 21c,它们是合成 (+)-himbacine 及其立体异构体的中间体。前体 5 是使用 Sonogashira 和 Stille 偶联反应作为主要的 C-C 键构建反应以短收敛方式获得的。