Development of Large-Scale Synthesis using a Palladium-Catalyzed Cross-Coupling Reaction for an Isoquinolone Derivative as a Potent DPP-4 Inhibitor
作者:Misayo Sera、Makoto Yamashita、Yuujirou Ono、Takashi Tabata、Eigo Muto、Takashi Ouchi、Hiroyuki Tawada
DOI:10.1021/op5000072
日期:2014.3.21
efficient large-scale synthesis of a novel DPP-4 inhibitor 1, an isoquinolone derivative bearing an aminomethyl group at the 3-position and carbamoylmethoxy group at the 6-position, is described. We have developed an effective and convenient synthetic method utilizing a key intermediate possessing a cyano group at the 3-position and a halogen atom at the 6-position. The key reaction, the insertion of an
描述了新型DPP-4抑制剂1的有效大规模合成,DPP-4抑制剂1是在3位带有氨基甲基和在6位带有氨基甲酰甲氧基的异喹诺酮衍生物。我们已经开发了一种有效且方便的合成方法,该方法利用了一个关键中间体,该中间体在3位具有一个氰基,在6位具有一个卤素原子。关键反应,在异喹诺酮的6-位置的氧原子的插入物通过使用6- bromoisoquinolone和交叉偶联反应实现钠叔丁醇(吨丁醇钠)在加入Pd(OAC)存在2和外消旋- BINAP作为提供6-叔丁基醚的催化剂-丁氧基异喹诺酮,收率高。在阮内镍的存在下,将3-位的氰基氢化,得到化合物1的氨基甲基部分。该合成路线已成功地以高收率和高质量应用于多千克规模的制剂。