Stereoselective Protection-Free Asymmetric Total Synthesis of (+)-Chamuvarinin, a Potent Anticancer and Antitrypanosomal Agent: Substrate-Controlled Construction of the Adjacently Linked Oxatricyclic Core by Internal Alkylation
作者:Mallesham Samala、Thien Nhan Lu、Suresh Mandava、Jungjoong Hwang、Ganganna Bogonda、Donghoon Kim、Haeil Park、Deukjoon Kim、Jongkook Lee
DOI:10.1021/acs.orglett.8b02706
日期:2018.10.19
A stereoselective protection-free asymmetric total synthesis of (+)-chamuvarinin (1), a potent anticancer and antitrypanosomal agent, has been accomplished. The adjacently linked [bis(tetrahydrofuran)]tetrahydropyran (THF–THF–THP) core of this natural product with seven stereogenic centers was constructed in a completely substrate-controlled fashion. The inter-ring stereochemistry (threo,threo,threo)
已经完成了一种有效的抗癌和抗胰凝乳剂(+)-香豆素(1)的无立体选择性保护的不对称全合成。该天然产物具有七个立体定位中心的相邻连接的[双(四氢呋喃)]四氢吡喃(THF-THF-THP)核是以完全受底物控制的方式构建的。氧杂三环核心的环间立体化学(threo,threo,threo)是通过螯合控制的Keck烯丙基化以立体选择性方式建立的,而环内顺式或反式相对立体化学则是通过立体选择性内部烷基化来控制的。