申请人:SmithKline Beecham Corporation
公开号:US06756498B2
公开(公告)日:2004-06-29
The invention provides a process for preparing a compound of formula (I)
and pharmaceutically acceptable derivatives thereof wherein:
R0 and R1 are independently selected from H, halogen, C1-6alkyl, C1-6alkoxy, or C1-6alkoxy substituted by one or more fluorine atoms;
R2 is H, C1-6alkyl, C1-6alkyl substituted by one or more fluorine atoms, C1-6alkoxy, C1-6hydroxyalkyl, SC1-6alkyl, C(O)H, C(O)C1-6alkyl, C1-6alkylsulfonyl, C1-6alkoxy substituted by one or more fluorine atoms, halogen, CN, CONR4R5, CO2H, CO2C1-6alkyl, or NHSO2R4;
R3 is H or phenyl substituted by SO2C1-6alkyl or SO2NH2;
R4 and R5 are independently selected from H, C1-6alkyl, phenyl, phenyl substituted by one or more atoms or groups R6, or together with the nitrogen atom to which they are attached form a saturated 4 to 8 membered ring
R6 is halogen, C1-6alkyl, C1-6alkoxy or C1-6alkoxy substituted by one or more fluorine atoms;
which comprises rearrangement of an azirine of formula (II)
wherein R0 to R3 are as defined for formula (I), or a protected derivative thereof, in the presence of a catalyst and a solvent.
这项发明提供了一种制备式(I)化合物及其药学上可接受的衍生物的过程,其中:R0和R1独立地选择自H,卤素,C1-6烷基,C1-6烷氧基或C1-6烷氧基上被一个或多个氟原子取代的基团;R2是H,C1-6烷基,C1-6烷基上被一个或多个氟原子取代,C1-6烷氧基,C1-6羟基烷基,SC1-6烷基,C(O)H,C(O)C1-6烷基,C1-6烷基磺酰基,C1-6烷氧基上被一个或多个氟原子取代,卤素,CN,CONR4R5,CO2H,CO2C1-6烷基或NHSO2R4;R3是H或苯基上被SO2C1-6烷基或SO2NH2取代;R4和R5独立地选择自H,C1-6烷基,苯基,苯基上被一个或多个原子或基团R6取代,或者与它们连接的氮原子形成饱和的4到8环;R6是卤素,C1-6烷基,C1-6烷氧基或C1-6烷氧基上被一个或多个氟原子取代的基团;该过程包括在催化剂和溶剂的存在下重排式(II)的环氧丙烷,其中R0到R3与式(I)中定义的相同,或者它们的保护衍生物。