作者:Hongbo Dong、Min Wu、Weihong Du、Mingwei Shong、Yujiao He、Yuchi Wang
DOI:10.1080/00397911.2021.2001018
日期:2022.1.2
Abstract Millpuline B (1), isolated from Millettia pulchra, is a naturally occurring bioactive compound with a chiral center. Herein, we report the first total syntheses of both (+/-)-Millpuline B from commercal available 6,7-dihydro-4(5H)-benzofuranone (4) using Grignard reaction and asymmetric CBS reduction as the key steps. Millpuline B (1) was synthesized with up to 94.3% enantiomeric excess and
摘要 Millpline B ( 1 ) 分离自Millettia pulchra,是一种具有手性中心的天然生物活性化合物。在此,我们报告了使用格氏反应和不对称 CBS 还原作为关键步骤从市售的 6,7-二氢-4(5H)-苯并呋喃酮 ( 4 ) 中首次全合成 (+/-)-Millpuline B。Millpuline B ( 1 ) 以高达 94.3% 的对映体过量合成,并使用 Mosher 方法阐明关键中间体11和12的绝对构型。所有合成步骤都可以在克级上进行。