作者:Shunya Takahashi、Yasuaki Suda、Takemichi Nakamura、Koji Matsuoka、Hiroyuki Koshino
DOI:10.1021/acs.joc.7b00147
日期:2017.3.17
This paper describes a general method for the synthesis of kehokorins A–E, novel cytotoxic p-terphenyls. 2,4,6-Trihydroxybenzaldehyde served as a common building block for preparation of the central aromatic ring. Construction of their p-terphenyl skeletons was achieved by a stepwise Suzuki–Miyaura coupling, whereas the phenyldibenzofuran moiety was built up by an intramolecular Ullmann reaction. Introduction
本文介绍了一种合成kehokorins A–E,新型细胞毒性对-三联苯的通用方法。2,4,6-三羟基苯甲醛是制备中心芳香环的常用结构单元。通过逐步的Suzuki-Miyaura偶联可实现其对叔丁基骨架的构建,而苯基二苯并呋喃部分则通过分子内乌尔曼反应建立。通过三氯乙亚氨酸酯方法将1-鼠李糖残基引入到部分保护的酮可可林B中。