Route Development and Multikilogram GMP Delivery of a Somatostatin Receptor Antagonist
作者:Rebecca T. Ruck、Mark A. Huffman、Gavin W. Stewart、Ed Cleator、Wynne V. Kandur、Mary M. Kim、Dalian Zhao
DOI:10.1021/op300128c
日期:2012.8.17
Route development and demonstration on multikilogram scale for the first GMP delivery of MK-4256 are described. Key aspects of the convergent route include a regioselective green iodination, one-pot oxadiazole synthesis, and an efficient ketone Pictet–Spengler reaction with diastereomeric upgrade via crystallization to afford 6 kg of API. A recycle procedure augmented the yield of desired diastereomer
描述了MK-4256首次GMP交付的多公斤级路线开发和演示。聚合路线的关键方面包括区域选择性绿色碘化,一锅法合成恶二唑,有效的酮Pictet-Spengler反应以及通过结晶的非对映异构体升级,从而提供6 kg的API。回收程序可以从Pictet-Spengler反应中,从富含不需要的非对映异构体的非对映异构体混合物中增加所需非对映异构体的收率。