The present invention relates to a new process for the preparation of (2Z,5Z)-5-(3-chloro-4- ((R)-2,3-dihydroxypropoxy)benzylidene)-2-(propylimino)-3-(o-tolyl)thiazolidin-4-one and to the new intermediate (R)-3-chloro-4-(2,3-dihydroxypropoxy)-benzaldehyde used in this process. (2Z,5Z)-5-(3-Chloro-4-((R)-2,3-dihydroxypropoxy)benzylidene)-2-(propylimino)-3- (o-tolyl)thiazolidin-4-one is described in WO 2005/054215 to act as an immunosuppressive agent. The present invention further also relates to a new process for the preparation of (R)-3-chloro-4-(2,3-dihydroxypropoxy)-benzaldehyde.
本发明涉及一种用于制备(2Z,5Z)-5-(3-
氯-4-((R)-2,3-二羟基丙氧基)苄亚甲基)-2-(丙基
亚胺基)-3-(邻
甲苯基)
噻唑啉-4-酮的新工艺,以及用于该工艺的新中间体(R)-3-
氯-4-(2,3-二羟基丙氧基)-
苯甲醛。WO 2005/054215中描述了(2Z,5Z)-5-(3-
氯-4-((R)-2,3-二羟基丙氧基)苄亚甲基)-2-(丙基
亚胺基)-3-(邻
甲苯基)
噻唑啉-4-酮作为一种
免疫抑制剂。本发明还涉及一种用于制备(R)-3-
氯-4-(2,3-二羟基丙氧基)-
苯甲醛的新工艺。