申请人:BIAL-PORTELA & Ca, S.A.
公开号:US11078163B2
公开(公告)日:2021-08-03
The present invention concerns a process for preparing a compound having the Formula A; or a pharmaceutically acceptable salt or derivative thereof, or for preparing a substituted urea compound of Formula IIa, or a pharmaceutically acceptable salt or ester thereof, the process comprising the reaction of an imidazolyl intermediate of Formula IIa′ with a carbamoyl halide of the formula: R1R2NC(═O)Hal, wherein Hal represents Cl, F, I or Br, wherein the intermediate of Formula IIa′ is prepared by oxidation of the derivative of R5 and R6, R6-C(═O)CH2R5 to form a glyoxal intermediate R6-C(═O)(C═O)R5, which is subjected to treatment with ammonium hydroxide and an aldehyde R8CHO to provide the intermediate of Formula IIa′ and wherein the compound substituents are as defined herein.
本发明涉及一种制备具有式A的化合物或其药学上可接受的盐或衍生物的工艺,或制备式IIa的取代脲化合物或其药学上可接受的盐或酯的工艺,该工艺包括式IIa′的咪唑中间体与式的氨基甲酰卤反应:R1R2NC(═O)Hal,其中Hal代表Cl、F、I或Br,式Ⅱa′的中间体是由R5和R6的衍生物R6-C(═O)CH2R5氧化制备成乙二醛中间体R6-C(═O)(C═O)R5、经氢氧化铵和醛 R8CHO 处理,得到式 IIa′的中间体,其中化合物取代基如本文所定义。