作者:Alexander Gontcharov、Javier Magano、Lacey Samp、Tim L. Houck、Peter R. Rose、Anil Rane、Jotham W. Coe、Steven W. Kortum、SeungWon Chung、Peter Jones、David Pattavina
DOI:10.1021/acs.oprd.9b00253
日期:2019.9.20
A scalable synthesis of a pan-JAK inhibitor is described. The original synthesis by the Medicinal Chemistry group has been modified to develop a new protecting group strategy, a 3-step telescoped synthesis to generate an imidazole ring from a nitrile, and a telescoped borylation/Suzuki coupling sequence as well as to replace HATU with process-friendly CDI in the final amidation step. Efficient API
描述了泛JAK抑制剂的可扩展合成。药物化学小组对原始合成方法进行了修改,以开发新的保护基策略,通过三步伸缩式合成法从腈基生成咪唑环,并采用伸缩式硼酸化/铃木偶联序列,并用工艺取代了HATU最终酰胺化步骤中友好的CDI。已实施有效的API纯化和多晶型物互变方案,以获得具有所需纯度和可吸入制剂物理性能的API。