[EN] PROCESS FOR THE PREPARATION OF PYRIDO [2, 1-A] ISOQUINOLINE DERIVATIVES AND POLYMORPHIC FROMS THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS DE PYRIDO[2,1-A]ISOQUINOLÉINE
申请人:HOFFMANN LA ROCHE
公开号:WO2009027276A1
公开(公告)日:2009-03-05
The present invention is concerned with an improved process for the preparation of pyrido[2,l-a]isoquinoline derivatives of formula (I) wherein R1, R2 and R3 are each independently hydrogen, halogen, hydroxy, lower alkyl, lower alkoxy or lower alkenyl, wherein lower alkyl, lower alkoxy and lower alkenyl may optionally be substituted by lower alkoxycarbonyl, aryl or heterocyclyl, and the pharmaceutically acceptable salts thereof. The invention also relates to two crystalline forms of (2S,3S,11bS)-1-(2-amino-9,10-dimethoxy-1, 3,4,6,7,11b-hexahydro-2H- pyrido[2,l-a]isoquinolin-3-yl)-4(S)-fluoromethyl-pyrrolidin-2-one dihydrochloride, which are form A and form B and to an amorphous form of said compound.
本发明涉及一种改进的制备式(I)的吡啶[2,1-a]异喹啉衍生物的方法,其中R1、R2和R3各自独立地为氢、卤素、羟基、低烷基、低烷氧基或低烯基,其中低烷基、低烷氧基和低烯基可选择性地被低烷氧羰基、芳基或杂环基取代,以及其药学上可接受的盐。本发明还涉及(2S,3S,11bS)-1-(2-氨基-9,10-二甲氧基-1,3,4,6,7,11b-六氢-2H-吡啶[2,1-a]异喹啉-3-基)-4(S)-氟甲基-吡咯烷-2-酮二盐酸盐的两种晶体形式,分别为A形和B形,以及该化合物的非晶形式。