Total Syntheses of Disorazoles A<sub>1</sub> and B<sub>1</sub> and Full Structural Elucidation of Disorazole B<sub>1</sub>
作者:K. C. Nicolaou、Gabriel Bellavance、Marek Buchman、Kiran Kumar Pulukuri
DOI:10.1021/jacs.7b09843
日期:2017.11.8
constructions of the required building blocks, including a novel Sharpless epoxidation/enzymatic kinetic resolution of stannane-containing substrates that led selectively to both enantiomeric forms of an epoxy vinyl stannane, and a series of coupling reactions, including a Wittig reaction, a Suzuki coupling, a Stille coupling, a Yamaguchi esterification and a Yamaguchi macrolactonization.
本文描述了天然存在的抗肿瘤剂二恶唑 A1 和 B1 的首次全合成以及后者的完整结构分配。这些合成是通过采用所需构建块的对映选择性构建的收敛策略实现的,包括新型 Sharpless 环氧化/含锡烷底物的酶动力学拆分,选择性地导致环氧乙烯基锡烷的两种对映体形式,以及一系列偶联反应,包括 Wittig 反应、Suzuki 偶联、Stille 偶联、Yamaguchi 酯化和 Yamaguchi 大环内酯化。