Esters of derivatives of 2-alpha-hydroxy-substituted 4-hydroxy-3-quinoline carboxylic acid, their preparation, their use as medicaments and compositions containing them.

摘要

Novel optical isomers and racemates of 4-hydroxy-3-quinoline-carboxylates of the formula IMAGE I wherein X is in the 5-, 6-, 7- or 8-position and is selected from the group consisting of hydrogen, halogen, alkyl of 1 to 5 carbon atoms, alkoxy of 1 to 4 carbon atoms, -CF3, -SCF3 and -OCF3, R1 is selected from the group consisting of hydrogen and alkyl of 1 to 4 carbon atoms, R2 is selected from the group consisting of thiazolyl, 4,5-dihydrothiazolyl, pyridinyl, oxazolyl, isoxazolyl, imidazolyl, pyrimidyl and tetrazolyl all optionally substituted with alkyl of 1 to 4 carbon atoms and phenyl substituted with at least one member of the group consisting of -OH, alkyl and alkoxy of 1 to 4 carbon atoms, -CF3, -NO2 and halogen, R3 and R4 are individually selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms and aryl, R5 is selected from the group consisting of aryl of 6 to 14 carbon atoms, heteroaryl of 3 to 14 carbon atoms, alkyl of 1 to 14 carbon atoms, alkyl substituted with -NH2, -NHAlk or IMAGE alkenyl of 2 to 6 carbon atoms, alkenyl of 2 to 6 carbon atoms substituted with aryl of 6 to 14 carbon atoms, Alk and Alk' are alkyl of 1 to 6 carbon atoms and their non-toxic, pharmaceutically acceptable acid addition salts with the proviso that when X is 8-CF3, R1 and R3 are hydrogen, R2 is 2-thiazolyl, R4 is methyl, R5 is not methyl having analgesic and anti-inflammatory activity.