申请人:Pfizer Inc
公开号:US06211208B1
公开(公告)日:2001-04-03
The present invention relates to 2-aminopyridine derivatives of the formula I:
or pharmaceutically acceptable salts thereof, wherein
A and B are each independently H, or together, A and B form a ring fused to the phenyl ring, said ring being saturated or unsaturated and containing from 5 to 7 ring member atoms, where said ring member atoms may optionally comprise from 1 to 2 heteroatoms selected independently from the group consisting of N, O or S, provided that no two adjacent ring members are heteroatoms;
X is oxygen or a single bond;
Y is (C1-C6)alkyl;
R1 is hydrogen, (C1-C6)alkyl or a (C1-C6 alkyl) group substituted with —NR2R3
wherein R2 and R3 are either selected independently from the group consisting of H, alkyl, aryl, aralkyl or tetrahydronaphthalene, wherein said aryl group or said aryl moiety of said aralkyl group is phenyl or naphthyl, said alkyl group or said alkyl moiety of said aralkyl group contains from one to six carbon atoms and is straight-chained or branched, and said aryl group, said tetrahydronaphthalene or said aryl moiety of said aralkyl group is optionally substituted with from one to three of halogen, nitro, cyano, amino, (C1-C4)alkoxy and (C1-C4)alkylamino moieties, or R2 and R3 form, together with the nitrogen to which they are attached, a heterocyclic ring, or a cyclic or bicyclic ring which is saturated or unsaturated. The compounds of the invention have the ability to inhibit the activity of nitric oxide synthases (NOS), and hence, are useful in the treatment of diseases, conditions and disorders of the central nervous system, among others.
本发明涉及以下式I的2-氨基吡啶衍生物:
或其药学上可接受的盐,其中
A和B各自独立地为H,或者一起,A和B形成与苯环融合的环,所述环饱和或不饱和,含有5至7个环成员原子,其中所述环成员原子可以选择性地包括从N、O或S组成的1至2个异原子,前提是相邻的两个环成员不是异原子;
X为氧或单键;
Y为(C1-C6)烷基;
R1为氢、(C1-C6)烷基或用—NR2R3取代的(C1-C6烷基)基
其中R2和R3从H、烷基、芳基、芳基烷基或四氢萘烯中独立选择,其中所述芳基或所述芳基烷基的芳基部分是苯或萘基,所述烷基或所述芳基烷基的烷基部分含有1至6个碳原子,是直链或支链,所述芳基、所述四氢萘烯或所述芳基烷基的芳基部分可以选择性地用1至3个卤素、硝基、氰基、氨基、(C1-C4)烷氧基和(C1-C4)烷基氨基基团取代,或者R2和R3与它们连接的氮一起形成一个杂环环,或者饱和或不饱和的环或双环,本发明的化合物具有抑制一氧化氮合酶(NOS)活性的能力,因此,在治疗中枢神经系统等疾病、症状和紊乱中有用。