作者:Andrew N. Lowell、Philip D. Wall、Stephen P. Waters、Marisa C. Kozlowski
DOI:10.1016/j.tet.2010.05.077
日期:2010.7
Syntheses of an isocoumarin subunit suitable for the completion of purpuromycin are outlined. Specifically, work targeting an orthogonally protected isocoumarin (eventually 12% yield over 12 steps) and an improved synthesis of a symmetrically protected isocoumarin (18% over 10 steps) are described. A new modification for selective catechol protection as mediated by potassium bicarbonate is also presented
概述了适合完成嘌呤霉素的异香豆素亚基的合成。具体地,描述了针对正交保护的异香豆素(最终在12个步骤中产率为12%)和对称保护的异香豆素的改进合成(在10个步骤中为18%)的工作。还介绍了由碳酸氢钾介导的选择性儿茶酚保护的新修饰,以及对异香豆素的氧化和还原功能化的见解。