Total Synthesis and Structure Confirmation of (−)-Asimitrin, a C<sub>37</sub> Annonaceous Acetogenin with a Hydroxylated Adjacent Bis-Tetrahydrofuran Core
作者:Soo Yeon Kwak、Youngjik Park、Seongju Lim、Hongjun Jang、Dongjoo Lee、Hyoungsu Kim、Deukjoon Kim
DOI:10.1021/acs.orglett.3c02495
日期:2023.9.15
The total synthesis and structure confirmation of the potent cytotoxic agent (−)-asimitrin (1), a C37 annonaceous acetogenin having a hydroxylated adjacent bis-tetrahydrofuran (THF) core, are described. The present synthesis features a highly stereoselective, chelate-controlled intramolecular amide enolate alkylation (IAEA) for the synthesis of key intermediate 17-hydroxy-16,17-erythro-16,19-trans-THF
描述了强效细胞毒性剂(-)-阿西米特林( 1 )的全合成和结构确认,该药物是一种具有羟基化相邻双四氢呋喃(THF)核心的C 37番荔枝苷元。本合成采用高度立体选择性、螯合物控制的分子内酰胺烯醇烷基化 (IAEA),用于合成关键中间体 17-羟基-16,17-赤式-16,19-反式-THF 6,我们的直接酮合成/ l -用于立体选择性引入 C(21)–C(34) 单元、Sharpless 不对称二羟基化 (SAD) 和内部 Williamson 醚化以构建 20,23-反式-THF 环的 Selectride 还原方案。