<i>N</i>-Carboxyanhydrides directly from amino acids and carbon dioxide and their tandem reactions to therapeutic alkaloids
作者:Thi V. Tran、Yi Shen、Hieu D. Nguyen、Shijie Deng、Hootan Roshandel、Mason M. Cooper、Jose R. Watson、Jeffery A. Byers、Paula L. Diaconescu、Loi H. Do
DOI:10.1039/d2gc03507c
日期:——
versatile N-carboxyanhydrides (NCAs) directly from amino acids and CO2 using n-propylphosphonic anhydride. Most of the NCAs were isolated with >95% purity after simple workup, avoiding the need for tedious purification procedures typically required using conventional methods. Because the reagents and conditions employed are mild, tandem reactions with moisture-sensitive NCAs were carried out to transform
我们报告了使用正丙基膦酸酐直接从氨基酸和 CO 2制备综合通用的N-羧基酸酐 (NCA) 。大多数 NCA 在简单的后处理后以 > 95% 的纯度被分离出来,避免了使用传统方法通常需要的繁琐纯化程序的需要。由于所使用的试剂和条件温和,因此与对水分敏感的 NCA 进行串联反应,将它们在一锅中转化为药用生物碱色胺菊酯和 Phaitanthrin A。定性分析表明,我们的 NCA 合成方法比直接或间接使用剧毒气体光气的传统方法更环保。