作者:Abdullajon Odilov、Yin Liu、Tianwen Hu、Xiangrui Jiang、Jin Suo、Guanghui Tian、Feipu Yang、Jingshan Shen
DOI:10.1021/acs.oprd.1c00184
日期:2021.11.19
An improved synthesis of simmerafil, a potent PDE5 inhibitor as a clinical candidate, is described with a 38.1% overall yield and 99.7% purity. Starting from the safe and inexpensive salicylamide (15), the key intermediate 2-propoxybenzimidamide (21), which is also a potential precursor for the preparation of pyrimidinone derivatives, was effectively and conveniently obtained. The subsequent process
simmerafil 是一种有效的 PDE5 抑制剂,作为临床候选药物,其合成的改进被描述为具有 38.1% 的总产率和 99.7% 的纯度。从安全且廉价的水杨酰胺( 15 )出发,有效且方便地获得了关键中间体2-丙氧基苯甲酰胺( 21 ),该中间体也是制备嘧啶酮衍生物的潜在前体。优化了从21到 simmerafil的后续工艺,使其更易于放大。