作者:Matteo Betti、Giulio Castagnoli、Alessandro Panico、Salvatore Sanna Coccone、Paul Wiedenau
DOI:10.1021/op300170q
日期:2012.11.16
A practical and scalable route to the SMO receptor antagonist SEN794 1 is described herein. A new and efficient access to the key intermediate 7 via the Kröhnke reaction was developed, significantly simplifying the synthesis and reducing costs. The optimized route consists of six chemical steps plus a palladium scavenging step. The intermediates are solids and were isolated by filtrations, except for
本文描述了通往SMO受体拮抗剂SEN794 1的实用且可扩展的途径。通过Kröhnke反应开发了一种新的,有效地访问关键中间体7的方法,大大简化了合成过程并降低了成本。优化的路线包括六个化学步骤以及一个钯清除步骤。中间体为固体,并通过过滤进行分离,除了酯9外,酯9被缩为粗油,进入后续步骤。在最后的酰胺形成步骤中,方便地从反应混合物中以高纯度结晶出目标化合物1。