We demonstrated, for the first time, that on the basis of chemistry principles, the hexacyclic peptidyl alkaloid (â)-chaetominine (1) can be synthesized in a straightforward manner from L-Trp. The approach features the efficient generation of molecular complexity via a tandem C3/C14 syn-selective epoxidation (dr = 3â:â2)âannulative ring-opening reaction and a regioselective epimerization at C14. The successful production of (â)-chaetominine (1) from L-Trp could be helpful for revealing how the configuration of L-tryptophan becomes inverted in the biosynthetic pathway of (â)-chaetominine (1).
我们首次证明,基于
化学原理,六环肽类
生物碱(â)-chaetominine (1) 可以通过 L-Trp 以简单直接的方法合成。该方法特点是通过串联C3/C14同位选择性环氧化(dr = 3â:â2)-环化开环反应有效生成分子复杂性,以及C14位的区域选择性异构化。从 L-Trp 成功合成(â)-chaetominine (1) 有助于揭示在(â)-chaetominine (1) 的
生物合成途径中
L-色氨酸的构型如何发生反转。