[EN] The present invention is concerned with aryl-4-ethynyl-isoxazole derivatives of formula (I) wherein R1 to R5 are as described in the specification, R5 representing an optionally substituted aryl or heteroaryl. It has been found that this class of compounds show high affinity and selectivity for GABA A a5 receptor binding sites, being useful as cognitive enhancer or for the treatment of cognitive disorders like Alzheimer's disease. [FR] La présente invention concerne des dérivés d'aryl-4-éthynyl-isoxazole de formule (I), dans laquelle R1 à R5 ont la signification indiquée dans la description; R5 représentant aryle ou hétéroaryle éventuellement substitué. Il a été découvert que cette classe de composés présente une affinité et une sélectivité élevées pour les sites de liaison au récepteur GABA A a5, lesdits composés s'avérant ainsi utiles en tant qu'agents d'amélioration cognitive ou dans le traitement de troubles cognitifs de type maladie d'Alzheimer.
Aryl-4-ethynyl-isoxazole derivatives
申请人:Buettelmann Bernd
公开号:US20070287739A1
公开(公告)日:2007-12-13
The present invention is concerned with aryl-4-ethynyl-isoxazole derivatives of formula I
wherein R
1
to R
5
are as described in the specification and pharmaceutically acceptable salt thereof. This class of compounds has high affinity and selectivity for GABA A α5 receptor binding sites, being useful as a cognitive enhancer or for the treatment of cognitive disorders like Alzheimer's disease.
本发明涉及式I的芳基-4-乙炔-异恶唑衍生物,其中R1至R5如规范中所述,并且其药用盐。这类化合物具有高亲和力和选择性结合到GABA A α5受体结合位点,可用作认知增强剂或用于治疗阿尔茨海默病等认知障碍。
Design, synthesis, and biological evaluation of 1,2,4-triazole derivatives as potent antitubercular agents
for developing antitubercular drugs. Based on the X-ray crystal structure of MmpL3 inhibitor complexes, a series of novel 1,2,4-triazole derivatives were designed, synthesized and evaluatedantitubercular activity against Mtb strain H37Rv. Comprehensive structure–activity relationship exploration resulted in the identification of compounds 21 and 28, which possess potent antitubercular activity against