Asymmetric total synthesis of three stereoisomers of (−)-renieramycin G and their cytotoxic activities
作者:Enming Du、Wenfang Dong、Baohe Guan、Xuan Pan、Zheng Yan、Li Li、Nan Wang、Zhanzhu Liu
DOI:10.1016/j.tet.2015.04.064
日期:2015.6
(−)-Renieramycin G, a marine antitumor natural product, is a typical member of the bis-tetrahydroisoquinoline alkaloid family. In this paper, an efficient protocol of asymmetric total synthesis of its three stereoisomers, (+)-renieramycin G, 11,13-epi-(+)-renieramycin G and 11,13-epi-(−)-renieramycin G was established by the use of a combination of l- and/or d-tyrosine as the starting materials. The
(-)-雷尼霉素G是一种海洋抗肿瘤天然产物,是双-四氢异喹啉生物碱家族的典型成员。本文建立了一种有效的不对称合成三种立体异构体的有效方案,即(+)-雷尼霉素G,11,13- Epi -(+)-雷尼霉素G和11,13- epi -(-)-雷尼霉素G通过使用1-和/或d-酪氨酸的组合作为起始原料。在人类癌细胞系上进行的初步细胞毒性试验表明,(-)-雷尼霉素G的L形拓扑构型在其细胞毒性活性中起着至关重要的作用。