作者:Lluís Bosch、Laura Mola、Elena Petit、Mar Saladrigas、Jorge Esteban、Anna M. Costa、Jaume Vilarrasa
DOI:10.1021/acs.joc.7b01973
日期:2017.10.20
A formal total synthesis of the cytotoxic macrolide amphidinolide E is reported. The strategic steps are three Julia–Kocienski reactions (J–K), for the formation of the C5–C6, C9–C10, and C17–C18 double bonds, a Suzuki–Molander C21–C22 bond formation reaction, and a Kita–Trost macrolactonization. The “instability” of the two dienic systems and of the stereocenter at C2 (allylic methine, α to the carboxy
据报道,细胞毒性大环内酯类两性霉素E的正式全合成。战略步骤是三个Julia–Kocienski反应(J–K),用于形成C5–C6,C9–C10和C17–C18双键,Suzuki-Molander C21–C22键形成反应以及Kita– Trost大内酯化。两个二烯系和C2(烯丙基次甲基,α到羧基的α)的立体中心和C17-OH和C18-OH的保护基的“不稳定性”提出了艰巨的挑战。每个Julia-Kocienski烯烃的聚合反应均经过系统优化,以提供最高的E / Z比。