作者:Wonchul Lee、Joo-Hack Youn、Sung Ho Kang
DOI:10.1039/c3cc42365d
日期:——
(â)-Kaitocephalin has been synthesized. With the C9 stereocenter from Garner's aldehyde, the C4 quaternary carbon was installed by the desymmetrization of the Cbz-protected serinol. The remaining stereogenic centers were generated through mercuriocyclization, epoxidation and regioselective epoxide opening, in which the quaternary carbon most likely played crucial roles in the stereoinduction.
(â)-Kaitocephalin 已被合成。利用来自加纳醛的 C9 立体中心,通过对 Cbz 保护的丝氨醇进行非对称化,安装了 C4 季碳。其余的立体中心是通过巯基环化、环氧化和区域选择性环氧化物开放生成的,其中季碳很可能在立体诱导过程中发挥了关键作用。