Enantioselective Synthesis of the Tricyclic Core of GKK1032, Novel Antibiotic Anti-Tumor Agents, by Employing an Intramolecular Diels-Alder Cycloaddition Strategy
作者:Munenori Inoue、Tadashi Katoh、Moriteru Asano
DOI:10.1055/s-2005-869843
日期:——
enantioselective synthesis of a decahydrofluorene nucleus, the tricyclic core (ABC-ring system) of GKK1032s, novel antimicrobial and anti-tumor agents, was achieved using a highly diastereoselective intramolecular Diels-Alder (IMDA) reaction. The substrate for the IMDA reaction was synthesized through intermolecular Diels-Alder reaction of Kitahara-Danishefsky's diene and an enone derived from enulose to construct
使用高度非对映选择性的分子内 Diels-Alder (IMDA) 反应实现了十氢芴核、GKK1032s 的三环核心(ABC 环系统)、新型抗菌剂和抗肿瘤剂的高效和对映选择性合成。IMDA 反应的底物是通过 Kitahara-Danishefsky 的二烯和衍生自 enulose 的烯酮的分子间 Diels-Alder 反应合成的,以构建功能化的 C 环。CuCl 促进的乙烯基碘化物和乙烯基锡烷的 Stille 偶联安装了必需的三烯侧链。