| 摘要 |
FIELD: medicine, pharmaceutics.SUBSTANCE: invention refers to new quinolone derivatives of general formula(1) or a pharmaceutically acceptable salts thereof, wherein Rrepresents a hydrogen atom, a lower alkyl group, cyclo Calkyl, a lower alkyl group or a lower alkoxy, a lower alkyl group; Rrepresents a hydrogen, a lower alkyl group or a halogen-substituted lower alkyl group; Rrepresents a phenyl group, a difurylglyoxal group, a thienyl group or pyridyl group with each group of the above is optionally substituted by one or two groups specified in a group consisting of the following (1) to (16) in an aromatic or heterocyclic ring, presented by the above R: (1) lower alkyl groups, (2) lower alkoxy groups, (3) halogen-substituted lower alkoxy groups; (4) a phenoxy group, (5) lower alkylthio groups, (6) a hydroxy group, (7) hydroxy lower alkyl groups, (8) halogen atoms, (9) lower alkanoyl groups, (10) lower alkoxycarbonyl groups, (11) amino groups optionally substituted by one or two lower alkyl groups, (12) carbamoyl groups optionally substituted by one or two lower alkyl groups, (13) cyclo Calkyl lower alkoxy groups, (14) pyrrolidinyl carbonyl groups, (15) morpholinyl carbonyl groups and (16) a carboxyl group; Rrepresents a halogen atom; Rrepresents a hydrogen atom or a halogen atom; Rrepresents a hydrogen atom; and Rrepresents any of the above groups (1) to (15): (1) a hydroxyl group, (2) a halogen atom, (3) a lower alkoxy group, (4) a halogen-substituted lower alkoxy group, (5) a hydroxy lower alkoxy group, (6) a lower alkoxy lower alkoxy group, (7) an amino group optionally substituted by one or two members specified in a group consisting of lower alkyl groups, lower alkoxy lower alkyl groups and cyclo Calkyl groups, (8) an amino lower alkoxy group optionally substituted in an amino group by one or two members specified in a group consisting of lower alkyl groups, lower alkanoyl group, lower alkyl sulphonyl groups and carbamoyl groups optionally substituted by one or two lower alkyl groups, (9) a cyclo Calkoxy group, (10) a cyclo Calkyl lower alkoxy group, (11) a tetrahydrofuryl lower alkoxy group, (12) a lower alkylthio group, (13) a heterocyclic group specified in a group consisting of morpholinyl groups, pyrrolidinyl groups, difurylglyoxal groups, thienyl groups and benzothienyl groups, (14) a phenyl lower alkoxy lower alkoxy group and (15) a pyrrolidinyl carbonyl group. Also, the invention refers to a pharmaceutical composition, and a preventive and/or therapeutic agent based on the compound of formula (1), using the compound of formula (1), a method of treating or preventing the above diseases, to a method of preparing the compound of formula (1).EFFECT: there are prepared new quinolone derivatives effective for treating and/or preventing the neurodegenerative diseases, diseases caused by neurological dysfunction, or diseases induced by deterioration of mitochondrial function.11 cl, 1 tbl, 104 ex |
