Asymmetric Total Synthesis and Determination of the Absolute Configuration of (+)-Srilankenyne via Sequence-Sensitive Halogenations Guided by Conformational Analysis
作者:Hongjun Jang、Soo Yeon Kwak、Dongjoo Lee、Juan V. Alegre-Requena、Hyoungsu Kim、Robert S. Paton、Deukjoon Kim
DOI:10.1021/acs.orglett.0c04303
日期:2021.2.19
This first asymmetric total synthesis of (+)-srilankenyne (1), a halogenated C15 tetrahydropyran acetogenin isolated from Aplysia oculifera, features a sequence-sensitive process guided by conformational analysis to solve the challenging problem of introducing halogens. A competing semipinacol rearrangement during the installation of C(12)-bromide was suppressed by our A1,3 strain-controlled bromination
这是第一个不对称的全合成的(+)-srilankenyne(1),一种从眼豆Aplysia oculifera分离出的卤代C15四氢吡喃产乙酸素,其特征在于通过构象分析引导序列敏感的过程,以解决引入卤素的难题。我们的A 1,3应变控制溴化方案在X射线晶体学和计算研究的支持下,在安装C(12)-溴化物过程中竞争了频哪醇重排。然后,通过中氯甲磺酸钠介导的氯化作用放置C(10)-氯化物。