Total synthesis of (+)-curacin A, a novel antimitotic metabolite from a cyanobacterium
作者:James C. Muir、Gerald Pattenden、Tao Ye
DOI:10.1039/b206796j
日期:2002.10.7
A concise total synthesis of (+)-curacin A, a potent antimitotic agent isolated from the cyanobacterium Lyngbya majuscula, is described. The synthesis features a new strategy to the 2-cyclopropyl-4-alkenyl substituted thiazoline unit in the natural product involving facile and selective thioacylation of the amino-alcohol 10 with the benzotriazole derived thioamide 11, leading to 28, as a key step. Cyclodehydration of 28 using Burgess' reagent then completed the synthesis of curacin A 1.
本文描述了一种(+)-刺孢胶素A(从蓝藻Lyngbya majuscula中分离出的强效抗有丝分裂剂)的简明全合成方法。该合成采用了一种新策略,涉及天然产物中2-环丙基-4-烯基取代噻唑啉单元的简易且选择性的硫酰化反应,即氨基醇10与苯并三唑衍生的硫酰胺11反应生成28,这是关键步骤。随后使用Burgess试剂对28进行环脱水反应,完成了刺孢胶素A 1的合成。