Xanthine derivatives, their preparation and pharmaceutical compositions containing them
申请人:BEECHAM - WUELFING GmbH & Co. KG
公开号:EP0260127A3
公开(公告)日:1989-09-27
A compound of formula (I):
or a pharmaceutically acceptable salt thereof, wherein R₁ and R₂ are independently n-butyl, -(CH₂)₂CHOHCH₃, -(CH₂)₂CHOHCH₂OH, -(CH₂)₂COCH₃ or -(CH₂)₂C(OR₄)(OR₅)CH₃ where R₄ and R₅ are each C1-4 alkyl or together are C2-4 polymethylene, provided that R₁ and R₂ are not both n-butyl, and R₃ is -CH₂CHOHCH₃, -CH₂COCH₃ or -CH₂C(OR₆)(OR₇)CH₃ where R₆ and R₇ are each C1-4 alkyl or together are C2-4 polymethylene.
化合物的分子式(I):或其药学上可接受的盐,其中R₁和R₂分别为正丁基,-(CH₂)₂CHOHCH₃,-(CH₂)₂CHOHCH₂OH,-(CH₂)₂COCH₃或-(CH₂)₂C(OR₄)(OR₅)CH₃,其中R₄和R₅分别为C1-4烷基或一起为C2-4聚亚甲基,但要求R₁和R₂不同时为正丁基,且R₃为-CH₂CHOHCH₃,-CH₂COCH₃或-CH₂C(OR₆)(OR₇)CH₃,其中R₆和R₇分别为C1-4烷基或一起为C2-4聚亚甲基。