Synthetic studies on lemonomycin: construction of the tetracyclic core
摘要:
A substrate-induced stereocontrol strategy was used to gain access to the tetracyclic core of (-)-lemonomycin. An advanced intermediate was prepared from a known substituted tyrosinol through a 16-step sequence, which involved a Pictet-Spengler reaction, a [3+2] dipolar cycloaddition and an enamide hydrogenation. (C) 2013 Published by Elsevier Ltd.
Total synthesis of (−)-renieramycin G from l-tyrosine
作者:Xiang Wei Liao、Wei Liu、Wen Fang Dong、Bao He Guan、Shi Zhi Chen、Zhan Zhu Liu
DOI:10.1016/j.tet.2009.05.025
日期:2009.7
(−)-Renieramycin G was synthesized in 21 steps for the longest linear sequences employing l-tyrosine methyl ester as the chiral starting material in 8.5% overall yield. Two of the four chiral centers came froml-tyrosine methyl ester, and the other two were induced through an intermolecular and an intramolecular Pictet–Spengler reaction, respectively.
Synthetic studies on lemonomycin: construction of the tetracyclic core
作者:Alberto Jiménez-Somarribas、Robert M. Williams
DOI:10.1016/j.tet.2013.05.009
日期:2013.9
A substrate-induced stereocontrol strategy was used to gain access to the tetracyclic core of (-)-lemonomycin. An advanced intermediate was prepared from a known substituted tyrosinol through a 16-step sequence, which involved a Pictet-Spengler reaction, a [3+2] dipolar cycloaddition and an enamide hydrogenation. (C) 2013 Published by Elsevier Ltd.