申请人:American Home Products Corporation
公开号:US05756501A1
公开(公告)日:1998-05-26
This invention relates to novel compounds which bind to central cholinergic muscarinic M1 receptors and may be useful for treatment of diseases attributed to cholinergic insufficiency such as presenile dementia, senile dementia of the Alzheimer's type, Parkinson's disease, Down's syndrome, and dementia pugilistica. The compounds useful in this invention have the formula ##STR1## or a 6, 7, 8, 9 tetrahydro analog thereof, where R.sup.1 is selected from H, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 cycloalkyl, C.sub.1 -C.sub.6 alkoxy, cyano, halo, nitro, and --NR.sup.4 R.sup.5, where R.sup.4 and R.sup.5 are independently selected from H, C.sub.1 -C.sub.6 alkyl and phenyl, optionally substituted with halo, cyano, hydroxy, nitro, amino, mono or di C.sub.1 -C.sub.6 alkylamino, phenylamino, C.sub.1 -C.sub.6 alkyl or C.sub.1 -C.sub.6 alkoxy; R.sup.2 is CF.sub.3 --, CF.sub.3 CH.sub.2 --, or --CH.sub.2 --X--R.sup.6 where X is oxygen or NH and R.sup.6 is C.sub.1 -C.sub.6 alkyl, phenyl-(CH.sub.2).sub.n -- or --(CH.sub.2).sub.n --NR.sup.7 R.sup.8 where R.sup.7 and R.sup.8 are selected from H or C.sub.1 -C.sub.6 alkyl, or R.sup.2 is equal to R.sup.3, and when the compound is hydrogenated at positions 6, 7, 8, and 9, R.sup.2 can also be C.sub.1 -C.sub.6 alkyl, and R.sup.3 is --(CH.sub.2).sub.m --NR.sup.9 R.sup.10 where R.sup.9 and R.sup.10 are independently H, C.sub.1 -C.sub.6 alkyl, phenyl, phenyl-(CH.sub.2).sub.n --, or NR.sup.9 R.sup.10 forms a mono or bicyclic azacycloalkane group having from 5 to 10 members, one of which may be a heteroatom selected from O, S, or NR.sup.11 where R.sup.11 is C.sub.1 -C.sub.6 alkyl, phenyl, pyrimidinyl, pyridinyl, or pyrazinyl or R.sup.9 is H and R.sup.10 is a mono or bicyclic azacycloalkyl group having from 5 to 10 members where the nitrogen is either a bridgehead nitrogen or the nitrogen may be optionally substituted with C.sub.1 -C.sub.6 alkyl, phenyl-(CH.sub.2).sub.n -- or C.sub.3 -C.sub.6 cycloalkyl; n is 1-6 and m is 2-5; or a pharmaceutically acceptable salt thereof.
本发明涉及一种新型化合物,其与中枢胆碱能肌动蛋白M1受体结合,并可用于治疗由于胆碱能不足引起的疾病,如老年前期痴呆、阿尔茨海默病、帕金森病、唐氏综合症和拳击性痴呆等。本发明中有用的化合物具有以下公式##STR1##或其6、7、8、9-四氢类似物,其中R1选自H、C1-C6烷基、C3-C6环烷基、C1-C6烷氧基、氰基、卤素、硝基和--NR4R5,其中R4和R5独立选择自H、C1-C6烷基和苯基,可选地取代卤素、氰基、羟基、硝基、氨基、单个或双个C1-C6烷基氨基、苯基氨基、C1-C6烷基或C1-C6烷氧基;R2为CF3--、CF3CH2--或--CH2--X--R6,其中X为氧或NH,R6为C1-C6烷基、苯基-(CH2)n--或--(CH2)n--NR7R8,其中R7和R8选自H或C1-C6烷基,或R2等于R3,当化合物在6、7、8和9位氢化时,R2也可以是C1-C6烷基,R3为--(CH2)m--NR9R10,其中R9和R10独立选择自H、C1-C6烷基、苯基、苯基-(CH2)n--或NR9R10形成的单环或双环氮杂环烷基,其成员数为5到10个,其中一个可能是O、S或NR11的杂原子,其中R11为C1-C6烷基、苯基、嘧啶基、吡啶基或吡嗪基,或R9为H且R10为成员数为5到10个的单环或双环氮杂环烷基,其中氮原子是桥头氮或氮原子可选择地取代C1-C6烷基、苯基-(CH2)n--或C3-C6环烷基;n为1-6,m为2-5;或其药学上可接受的盐。