作者:Jae-Chul Jung、Rajashaker Kache、Kimberly K. Vines、Yan-Song Zheng、Panicker Bijoy、Muralikrishna Valluri、Mitchell A. Avery
DOI:10.1021/jo048742o
日期:2004.12.1
A convergent, total synthesis of epothilones B (2) and D (4) is described. The key steps are Normant coupling to establish the desired (Z)-stereochemistry at C12−C13, Wadsworth−Emmons olefination of methyl ketone 28 with the phosphonate ester 8, diastereoselective aldol condensation of aldehyde 5 with the enolate of keto acid derivatives to form the C6−C7 bond, selective deprotection of acid 52, and
描述了收敛的全合成的埃坡霉素B(2)和D(4)。关键步骤是通过Normant偶联在C12-C13上建立所需的(Z)-立体化学,Wadsworth-Emmons甲基酮28与膦酸酯8的烯键化,醛5与醛酸与酮酸衍生物的烯酸酯的非对映选择性醛醇缩合以形成C6-C7键,酸52的选择性脱保护和大内酯化。