A carbonylative cross-coupling strategy to the total synthesis of the sarcodictyins: preliminary studies and synthesis of a cyclization precursor
作者:Simona M Ceccarelli、Umberto Piarulli、Joachim Telser、Cesare Gennari
DOI:10.1016/s0040-4039(01)01608-2
日期:2001.10
Preliminary studies were conducted on the implementation of a new strategy to the total synthesis of the common diterpenoid tricyclic skeleton of sarcodictyins and eleutherobin. According to the approach presented, a key retrosynthetic disconnection is devised at the C3–C5 position, identifying a carbonylative cross-coupling reaction as the medium-sized ring forming step. The synthesis of a fully functionalized
对一种新策略的实施进行了初步研究,该策略完全合成了降钙素和eleutherobin的共同二萜三环骨架。根据提出的方法,在C3-C5位置设计了一个关键的逆合成断开连接,将羰基交叉偶联反应确定为中等大小的成环步骤。描述了包含Z乙烯基锡烷和碳烷氧基取代的Z-烯醇三氟甲磺酸酯作为反应中心的完全官能化的环化前体的合成。