First Stereoselective Total Synthesis and Biological Evaluation of Amphidinin B and Its Analogues
作者:Jhillu S. Yadav、A. Srinivas Reddy、Ch. Suresh Reddy、Basi V. Subba Reddy、Venkateshwarlu Saddanapu、Anthony Addlagatta
DOI:10.1002/ejoc.201001205
日期:2011.2
A highly stereoselective first total synthesis of amphidinin B is described. The key steps involved in this synthesis are the generation of the exo-double bond in the C 1 ―C 9 segment, the Barbier allylation, enzymatic kinetic resolution, and the construction of the C 10 ―C 21 segment by Sharpless asymmetric epoxidation, base-induced epoxide ring-opening, radical cyclization, diastereoselective reduction
描述了 amphidinin B 的高度立体选择性的首次全合成。该合成涉及的关键步骤是在 C 1 -C 9 链段中生成外双键、Barbier 烯丙基化、酶动力学拆分以及通过 Sharpless 不对称环氧化反应构建 C 10 -C 21 链段,碱基诱导环氧化物开环、自由基环化、环外双键的非对映选择性还原、一锅烯丙基化随后脱苄基化、Evans 烷基化和 Yamaguchi 酯化。