Synthesis of Filibuvir. Part III. Development of a Process for the Reductive Coupling of an Aldehyde and a β-Keto-lactone
作者:Nathan D. Ide、John. A. Ragan、Gabriel Bellavance、Steve J. Brenek、Eric M. Cordi、Grace O. Jensen、Kris N. Jones、Danny LaFrance、Kyle R. Leeman、Leo J. Letendre、David Place、Corey L. Stanchina、Gregory W. Sluggett、Holly Strohmeyer、Jon Blunt、Kevin Meldrum、Stuart Taylor、Ciaran Byrne、Denis Lynch、Sandra Mullane、Maria M. O’Sullivan、Marcella Whelan
DOI:10.1021/op400237j
日期:2014.1.17
Development of a reductive coupling of a β-keto-lactone and an aldehyde is described, in which the Hantzsch ester serves as an inexpensive and convenient reducing agent. Structural features in the β-keto-lactone rendered standard reductive coupling conditions ineffective, requiring development of a specific addition and temperature protocol. Identification of one of the reactants as Ames positive required
描述了β-酮内酯与醛的还原偶联的开发,其中汉茨tz酯用作便宜且方便的还原剂。β-酮-内酯的结构特征使标准的还原偶联条件无效,需要开发特定的添加和温度方案。要确定一种反应物为Ames阳性,就需要对最终活性药物成分(API)中的这种杂质采用百万分之几的控制策略。