作者:Abderaouf Ahaidar、David Fernández、Olga Pérez、Gerardo Danelón、Carmen Cuevas、Ignacio Manzanares、Fernando Albericio、John A. Joule、Mercedes Álvarez,
DOI:10.1016/s0040-4039(03)01551-x
日期:2003.8
The total synthesis of variolin B from 4-methoxy-7-azaindole is described. The preparation of the protected amino derivative 10 and a coupling reaction of the iodo derivative 12 with 2-acetylamino-4-trimethylstannylpyrimidine are the key steps of the sequence. The use of N-tosyldichloromethanimine for the cyclisation step afforded a good entry to the 9-aminopyrido[3′,2′:4,5]pyrrolo[1,2-c]pyrimidine
描述了由4-甲氧基-7-氮杂吲哚全合成variolinB。被保护的氨基衍生物10的制备以及碘衍生物12与2-乙酰氨基-4-三甲基锡烷基嘧啶的偶联反应是该序列的关键步骤。在环化步骤中使用N-甲苯磺酰基二氯甲亚胺可以很好地进入9-氨基吡啶并[3',2':4,5]吡咯并[1,2- c ]嘧啶体系。分两步从三重保护的四环化合物13中获得瓦里林B。