PRODUCTION METHOD FOR HETEROARYLCARBOXYLIC ACID ESTER DERIVATIVE, PRODUCTION INTERMEDIATE THEREOF, AND CRYSTAL
申请人:EA Pharma Co., Ltd.
公开号:EP3118197A1
公开(公告)日:2017-01-18
Provision of a production method of compound (VI) useful as a therapeutic drug for diabetes, its intermediate, and its crystal. A production method of compound (VI) or a salt thereof, including (d) a step of reacting compound (II) with an acid halogenating agent to give an acid halide, (e) a step of reacting the acid halide with compound (IV) in the presence of a base, and crystallizing compound (V) or a salt thereof from the reaction system, and (f) a step of subjecting the compound (V) to reductive deprotection in the presence of a metal catalyst, and crystallizing compound (VI) or a salt thereof from the reaction system:
wherein R5 is an aralkyl group optionally having a substituent(s), an aralkyloxymethyl group optionally having a substituent(s), or a heteroarylalkyl group optionally having a substituent(s).
提供一种可用作糖尿病治疗药物的化合物(VI)、其中间体及其晶体的生产方法。一种化合物(VI)或其盐的生产方法,包括(d)使化合物(II)与酸卤化剂反应生成酸卤化物的步骤,(e)在碱存在下使酸卤化物与化合物(IV)反应并从反应体系中结晶出化合物(V)或其盐的步骤,以及(f)在金属催化剂存在下使化合物(V)进行还原脱保护并从反应体系中结晶出化合物(VI)或其盐的步骤:
其中 R5 是任选具有取代基的芳烷基、任选具有取代基的芳氧基甲基或任选具有取代基的杂芳烷基。