Total Synthesis of (+)-Psymberin (Irciniastatin A): Catalytic Reagent Control as the Strategic Cornerstone
作者:Amos B. Smith、Jon A. Jurica、Shawn P. Walsh
DOI:10.1021/ol802466t
日期:2008.12.18
An effective total synthesis of the marine sponge cytotoxin (+)-psymberin [irciniastatin A (1)] has been achieved. Highlights of the strategy include a Diels-Alder reaction between a bis-siloxy diene and an allene to construct the aromatic ring, a boron-mediated aldol reaction to elaborate the C(15-17) all syn stereotriad, catalytic reagent control to set the C(8, 9, 11 and 13) stereogenic centers
已经实现了海绵细胞毒素 (+)-psymberin [irciniastatin A (1)] 的有效全合成。该策略的亮点包括双甲硅烷氧基二烯和丙二烯之间的 Diels-Alder 反应以构建芳环,硼介导的醇醛反应以详细说明 C(15-17) 全顺式立体三联体,催化试剂控制以设置四氢吡喃核心的 C(8, 9, 11 和 13) 立体中心,以及后期 Curtius 重排以安装敏感的 N,O-氨基部分。从市售的 2,2-二甲基-1,3-丙二醇合成最长的 21 步线性序列。