作者:Xin Linghu、Nicholas Wong、Hans Iding、Vera Jost、Haiming Zhang、Stefan G. Koenig、C. Gregory Sowell、Francis Gosselin
DOI:10.1021/acs.oprd.7b00006
日期:2017.3.17
development of a synthetic route to manufacture ERK inhibitor GDC-0994 on multikilogram scale is reported herein. The API was prepared as the corresponding benzenesulfonate salt in 7 steps and 41% overall yield. The synthetic route features a biocatalytic asymmetric ketone reduction, a regioselective pyridone SN2 reaction, and a safe and scalable tungstate-catalyzed sulfide oxidation. The end-game
本文报道了以多千克规模生产ERK抑制剂GDC-0994的合成路线的工艺开发。通过7个步骤将API制备为相应的苯磺酸盐,总产率为41%。合成路线具有生物催化不对称酮还原,区域选择性吡啶酮S N 2反应和安全且可扩展的钨酸盐催化的硫化物氧化的特征。最终的过程包括望远镜式的S N Ar /去甲硅烷基化/苯磺酸盐的形成过程。最后,API结晶的发展允许清除与过程相关的杂质,获得> 99.5 A%的HPLC和> 99%ee的目标分子。