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    • 3. 发明申请
    • ISOXAZOLO-PYRIDAZINE DERIVATIVES
    • ISOXAZOLO-PYRIDAZINE衍生物
    • WO2009071477A1
    • 2009-06-11
    • PCT/EP2008/066226
    • 2008-11-26
    • F. HOFFMANN-LA ROCHE AGBUETTELMANN, BerndJAKOB-ROETNE, RolandKNUST, HennerTHOMAS, Andrew
    • BUETTELMANN, BerndJAKOB-ROETNE, RolandKNUST, HennerTHOMAS, Andrew
    • C07D413/12C07D413/14C07D487/04A61K31/501A61K31/5025A61P25/28
    • C07D413/12C07D413/14C07D487/04
    • The invention relates to compounds of formula (I) wherein X is O or NH; R 1 is phenyl, pyridinyl, or pyrimidinyl each optionally substituted with one, two or three halo, R 2 is C 1-4 alkyl, H or C 1-4 haloalkyl; R 3 , R 4 , and R 5 each are independently H, optionally substituted Ci-7alkyl, optionally substituted Cι.7alkoxy, CN, halo, NO2, -C(O)-R a -NR b R c , optionally substituted 3- to 7-membered heterocyclyl, optionally substituted 5- or 6-membered heteroaryl, -C(0)-NR d R e , or R 3 together with the neighboring pyridazine-nitrogen form a 5-membered optionally substituted annelated aromatic ring with two additional ring nitrogen atoms, or to a pharmaceutically acceptable salt thereof, having affinity and selectivity for the GABA A α5 receptor binding site, their manufacture, pharmaceutical compositions containing them and their use as medicaments. The active compounds of the present invention are useful as cognitive enhancers or for the treatment of cognitive disorders like Alzheimer's disease.
    • 本发明涉及其中X为O或NH的式(I)化合物; R 1是苯基,吡啶基或嘧啶基,每个任选被一个,两个或三个卤素取代,R 2是C 1-4烷基,H或C 1-4卤代烷基; R 3,R 4和R 5各自独立地为H,任选取代的C 1-7烷基,任选取代的C 1-7烷氧基,CN,卤素,NO 2,-C(O)-R a -NR b R c,任选取代的3-至7-元杂环基, 任选取代的5-或6-元杂芳基,-C(O)-NR d R e或R 3与相邻的哒嗪 - 氮形成具有两个另外的环氮原子的5元任选取代的环状芳环,或与药学上可接受的盐 具有对GABA A a5受体结合位点的亲和性和选择性,它们的制备,含有它们的药物组合物及其作为药物的用途。 本发明的活性化合物可用作认知增强剂或治疗认知障碍如阿尔茨海默氏病。