申请人:OTSUKA PHARMACEUTICAL FACTORY, INC.
公开号:EP0591528A1
公开(公告)日:1994-04-13
Pyrazolo[1,5-a]pyrimidine derivatives represented by general formula (I), wherein R₁, R₂, R₃ and R₄ represent each hydrogen, carboxyl, lower alkoxycarbonyl, phenyl, or lower alkyl or cycloalkyl which may be each substituted with hydroxy, carboxyl or lower alkoxycarbonyl, or alternatively R₁ and R₂ maybe combined together to form lower alkylene; R₅ represents -SR₆ or -NR₇R₈; R₆ represents pyridyl or phenyl which may be substituted with one to three groups selected from among hydroxy and lower alkyl and R₇ and R₈ represent each hydrogen or phenyl which may be substituted with one to three groups selected from among hydroxy, lower alkyl, lower alkoxycarbonyl and carboxyl, or alternatively R₇ and R₈ may be combined to form, together with the nitrogen atom to which they are bound, 1-pyrrolidinyl, 2-oxo-1-pyrrolidinyl, phenyl which may be substituted with halogen or trihalomethyl, or 1-piperazinyl which may be substituted with hydroxy-lower alkyl or diphenyl-lower alkyl, salts thereof, and an anti-inflammatory containing as the active ingredient the compound with the above formula wherein R₁, R₃ and R₄ represent each hydrogen, R₂ represents lower alkyl or cycloalkyl, and R₅ represents -NR₇R₈ wherein R₇ represents hydrogen and R₈ represents phenyl substituted with hydroxy and two lower alkyl groups.
通式(I)代表的吡唑并[1,5-a]嘧啶衍生物,其中 R₁、R₂、R₃ 和 R₄ 分别代表氢、羧基、低级烷氧羰基、苯基或可分别被羟基、羧基或低级烷氧羰基取代的低级烷基或环烷基,或者 R₁ 和 R₂ 可结合在一起形成低级亚烷基;R₅ 代表-SR₆ 或-NR₇R₈;R₆代表吡啶基或苯基,可被一至三个选自羟基和低级烷基的基团取代;R₇和R₈分别代表氢或苯基,可被一至三个选自羟基、低级烷基、低级烷氧基羰基和低级烷氧基羰基的基团取代、R₇和R₈各自代表氢或苯基,苯基可被选自羟基、低级烷基、低级烷氧羰基和羧基中的一至三个基团取代,或者R₇和R₈可与它们结合的氮原子结合形成1-吡咯烷基、2-氧代-1-吡咯烷基、可被卤素或三卤甲基取代的苯基,或可被羟基-低级烷基或二苯基-低级烷基取代的 1-哌嗪基,其盐,以及含有上式化合物作为活性成分的消炎药,其中 R₁、代表氢,R₂ 代表低级烷基或环烷基,R₅ 代表 -NR₇R₈ 其中 R₇ 代表氢,R₈ 代表被羟基和两个低级烷基取代的苯基。