installation route was developed which involved the conversion of a late-stage common intermediate to an N(1)-thioether derivative followed by chloromethylation, displacement with di-t-butylpotassium phosphate, and deprotection. This second strategy resulted in the multikilogram scale preparation of the API in 14 linear steps and ∼7% overall yield.
描述了开发两个导致生产> 1000 kg BMS-663068(3)的可行途径的过程。为支持发展活动和最初的临床试验而确定的最初100千克递送的路线涉及将2-
氨基-4-
甲基吡啶转化为母体活性药物成分(A
PI),然后进行前药安装和脱保护。为了消除二的父A
PI和合成的问题的隔离吨丁基(
氯甲基)酯,
磷酸一第二代前药安装路线被开发其中涉及一个后期常用中间体的转化为N(1) -thioether衍
生物随后
氯甲基,位移二吨
丁基磷酸钾,并脱保护。第二种策略导致A
PI以14线性步长的多千克级规模制备A
PI,总产率约为7%。