Tricyclic phthalazine compounds of formula (I)
wherein A is a 5-7 membered heterocycle containing from 1 to 4 nitrogen atoms, optionally partially or totally unsaturated, and optionally substituted by a (C1-4)alkyl group in turn optionally substituted; Z is NH, methylene, a C2-6 alkylene chain optionally branched and/or unsaturated and/or interrupted by a C5-7 cycloalkyl residue; Cy is phenyl or heterocycle optionally substituted by one or more substituents, or a COR4 group wherein R4 is hydroxy, alkoxy, amino optionally substituted by one or two (C1-6)alkyl groups or by hydroxy; R is a (C1-6)alkyl or polyfluoro(C1-6)alkyl group; R1 is hydrogen; a (C1-8)-alkyl, (C2-8)-alkenyl or (C2-8)-alkynyl group optionally substituted by hydroxy, oxo, aryl or heterocycle, and optionally interrupted by one or more heteroatoms or heterogroups; a (C1-4)alkoxy group or a (C4-7)cycloalkoxy group optionally containing an oxygen atom and optionally substituted by a polar substituent in the cyclic moiety, aryloxy aryl-(C1-10)-alkoxy; the N—O derivatives and the pharmaceutically acceptable salts thereof are described. The compounds of formula (I) are PDE 4 inhibitors.
公式(I)中的
三环邻苯二酮化合物,其中A是含有1至4个氮原子的5-7元杂环,可部分或完全不饱和,并且可被(C1-4)烷基基团取代,该基团也可被取代;Z是NH、亚甲基、一个C2-6烷基链,可分支和/或不饱和和/或被C5-7环烷基残基打断;Cy是苯基或杂环,可被一个或多个取代基取代,或者是一个COR4基团,其中R4是羟基、烷氧基、
氨基,可被一到两个(C1-6)烷基基团或羟基取代;R是一个(C1-6)烷基或多
氟化(C1-6)烷基基团;R1是氢原子;一个(C1-8)烷基、(C2-8)烯基或(C2-8)炔基,可由羟基、氧代、芳基或杂环取代,并且可被一个或多个杂原子或杂基打断;一个(C1-4)烷氧基或一个(C4-7)环烷氧基,可含有一个氧原子,并且可被环中的极性取代基取代,芳氧基芳基-(C1-10)-烷氧基;其N-O衍
生物和药用盐已被描述。公式(I)中的化合物是PDE 4
抑制剂。