Pyrazolo[4,3-b]pyridine derivatives, process for their preparation and pharmaceutical compositions containing them
申请人:BEECHAM GROUP PLC
公开号:EP0239191A2
公开(公告)日:1987-09-30
A compound of the formula (I) or a salt or solvate thereof:
in which:
R₀ is hydrogen or C1-6 alkyl; or together with R₃ is C4-6 polymethylene;
R₁ and R₂ are both hydrogen;
or
R₁ is hydrogen, C1-6 alkyl; and R₂ is CN; CR₅R₆Y where R₅ and R₆ are independently selected from hydrogen and C1-4 alkyl and Y is selected from hydrogen, OR₇ or SR₇ where R₇ is hydrogen, C1-4 alkyl or C2-4 alkanoyl, and NR₈R₉ where R₈ and R₉ are independently hydrogen, C1-4 alkyl, C2-4 alkenyl or C2-4 alkanoyl or together are C4-6 polymethylene; or COR₁₀ where R₁₀ is OH or C1-4 alkyl, or COR₁₀ is a pharmaceutically acceptable ester or amide,
or
R₂ is hydrogen, C1-6 alkyl, or phenyl optionally substituted by halogen, CF₃, C1-4 alkoxy or C1-4 alkyl, and R₁ is CN, CR₅R₆Y or COR₁₀ as defined for R₂ above;
or
R₁ and R₂ together form C₃-C₆ polymethylene optionally substituted by C₁-C₄ alkyl;
R₃ is hydrogen; or C1-10 alkyl or C3-10 cycloalkyl, either optionally substituted by hydroxy, C1-4 alkoxy, thiol, C1-4 alkylthio or NR₁₁R₁₂ wherein R₁₁ and R₁₂ are independently hydrogen, C1-6 alkyl or C2-7 alkanoyl or together are C3-6 polymethylene; C2-10 alkenyl; or phenyl optionally substituted by one or two of halogen, CF₃, C1-4 alkoxy, C1-4 alkyl, hydroxy, nitro, cyano, C2-10 acyloxy, NR₁₃R₁₄ wherein R₁₃ and R₁₄ are independently selected from hydrogen, C1-6 alkyl, or C2-7 alkanoyl; or COR₁₅ wherein R₁₅ is hydroxy, C1-6 alkoxy or NR₁₆R₁₇ wherein R₁₆ and R₁₇ are independently selected from hydrogen or C1-6 alkyl;
or
R₃ is a mono- or fused bi-cyclic heteroaryl group having up to ten atoms in the aromatic ring(s), not more than two of which are selected from nitrogen, oxygen or sulphur, other than those containing basic nitrogen, optionally substituted by one or two substituents selected from halogen, CF₃, C1-4 alkoxy, C1-4 alkyl, hydroxy, nitro, cyano, C2-10 acyloxy, NR₂₃R₂₄ wherein R₂₃ and R₂₄ are independently selected from hydrogen, C1-6 alkyl, C2-7 alkanoyl or C1-6 alkylsulphonyl; or COR₂₅ wherein R₂₅ is hydroxy, C1-6 alkoxy or NR₂₆ R₂₇ wherein R₂₆ and R₂₇ are independently selected from hydrogen or C1-6 alkyl;
R₄ is hydrogen, or C1-4 alkyl, phenyl or benzyl, each of which is optionally substituted in the phenyl ring by one or two of halogen, CF₃, C1-4 alkoxy or C1-4 alkyl and is attached at nitrogen atom l or 2; and
Rx is C1-6 alkyl, halogen, nitro, NR₁₈R₁₉ where R₁₈ and R₁₉ are independently hydrogen, C1-6 alkyl or C2-7 alkanoyl, nitrile, COOH, CONH₂; phenyl or benzyl optionally substituted by one or two of halogen, nitro, C1-6 alkoxy, hydroxy, C2-7 alkanoyloxy, NR₁₈R₁₉, C1-6 alkyl, CF₃, CN; thienyl, furyl or pyrryl optionally N-substituted by C1-6 alkyl,
with the proviso that R₀ and R₃ are not both hydrogen when R₁ is hydrogen and R₂ and Rx are methyl, is useful for treating inflammatory or allergic conditions.
式 (I) 的化合物或其盐或溶液:
其中
R₀ 是氢或 C1-6 烷基;或与 R₃ 一起是 C4-6 聚亚甲基;
R₁ 和 R₂ 都是氢;
或
R₁ 是氢、C1-6 烷基;R₂ 是 CN;CR₅R₆Y 其中 R₅ 和 R₆ 独立选自氢和 C1-4 烷基,Y 选自氢、OR₇ 或 SR₇ 其中 R₇ 是氢、C1-4烷基或C2-4烷酰基,以及 NR₈R₉,其中 R₈ 和 R𠢙 独立地为氢、C1-4烷基、C2-4烯基或C2-4烷酰基,或共同为 C4-6 聚亚甲基;或 COR₁₀,其中 R₁₀ 是 OH 或 C1-4 烷基,或 COR₁₀ 是药学上可接受的酯或酰胺、
或
R₂ 是氢、C1-6 烷基或任选被卤素、CF₃、C1-4 烷氧基或 C1-4 烷基取代的苯基,且 R₁ 是 CN、CR₅R₆Y 或 COR₁₀,如上文对 R₂ 所定义;
或
R₁ 和 R₂ 共同形成任选被 C₁-C₄ 烷基取代的 C₃-C₆ 聚亚甲基;
R₃是氢;或C1-10烷基或C3-10环烷基,任选被羟基、C1-4烷氧基、硫醇、C1-4烷硫基或NR₁₁R₁₂取代,其中R₁₁和R₁₂独立地是氢、C1-6烷基或C2-7烷酰基,或共同形成C3-6聚亚甲基;C2-10烯基;或任选被卤素、CF₃、C1-4 烷氧基、C1-4 烷基、羟基、硝基、氰基、C2-10 乙酰氧基、NR₁₃R₁₄ 中的一个或两个取代的苯基,其中 R₁₃ 和 R₁₄ 独立选自氢、C1-6 烷基或 C2-7 烷酰基;或 COR₁₅,其中 R₁₅ 是羟基、C1-6 烷氧基或 NR₁₆R₁₇,其中 R₁₆ 和 R₁₇ 独立选自氢或 C1-6 烷基;
或
R₃是单环或融合双环杂芳基,在芳香环中最多有十个原子,其中不超过两个原子选自氮、氧或硫,但含碱基氮的杂芳基除外、可任选被一个或两个取代基取代,这些取代基选自卤素、CF₃、C1-4 烷氧基、C1-4 烷基、羟基、硝基、氰基、C2-10 乙酰氧基、NR₂₃R₂₄,其中 R₂₃ 和 R₂₄ 独立选自氢、C1-6 烷基、C2-7 烷酰基或 C1-6 烷基磺酰基;或 COR₂₅ 其中 R₂₅ 是羟基、C1-6 烷氧基或 NR₂₆ R₂₇ 其中 R₂₆ 和 R₂₇ 独立选自氢或 C1-6 烷基;
R₄是氢、或C1-4烷基、苯基或苄基,其中每个苯基环可选择被卤素、CF₃、C1-4烷氧基或C1-4烷基中的一个或两个取代,并连接在氮原子l或2上;和
Rx 是 C1-6 烷基、卤素、硝基、NR₁₈R₁₉,其中 R₁₈ 和 R₁₉ 独立地是氢、C1-6 烷基或 C2-7 烷酰基、腈、COOH、CONH₂;任选被卤素、硝基、C1-6 烷氧基、羟基、C2-7 烷酰氧基、NR₁₈R₁₉、C1-6 烷基、CF₃、CN 中的一个或两个取代的苯基或苄基;任选被 C1-6 烷基 N-取代的噻吩基、呋喃基或吡喃基、
当 R₁ 为氢、R₂ 和 Rx 为甲基时,R₀ 和 R₃ 不能都是氢。