Patent ID: 6969723

Claim:
Compounds of the general formula (I) wherein R 1 stands for hydrogen atom or a straight or branched C 1-4 alkyl group; R 2 stands for hydrogen atom or a straight or branched C 1-4 alkyl group; R 3 stands for hydrogen atom or a straight or branched C 1-4 alkyl group, or a phenyl group, thienyl group, or furyl group, optionally substituted by one or more straight or branched C 1-4 alkyl group, straight or branched C 1-4 alkoxy group, or halogen atom, or for one, two or three nitrogen atoms or one nitrogen atom and one oxygen atom or one nitrogen atom and one sulphur atom containing 5- or 6 membered heteroaromatic ring, optionally substituted by one or more straight or branched C 1-4 alkyl group, straight or branched C 1-4 alkoxy group, or halogen atom; R 4 and R 5 stand for hydrogen atom or form together an 1,3-butadienyl group, optionally substituted by a methylenedioxy group or one or more straight or branched C 1-4 alkyl group, straight or branched C 1-4 alkoxy group, hydroxy group or halogen atom; R 6 stands for hydrogen atom or a cyano group, aminocarbonyl group, C 1-4 alkoxycarbonyl group, or carboxy group; R 7 stands for hydrogen atom or a straight or branched C 1-4 alkyl group, a phenyl group, benzyl group, thienyl group or furyl group, optionally substituted by a methylenedioxy group, or one or more straight or branched C 1-4 alkyl group, straight or branched C 1-4 alkoxy group, hydroxy group, trifluoromethyl group, cyano group or halogen atom, or for one, two or three nitrogen atoms or one nitrogen atom and one oxygen atom or one nitrogen atom and one sulphur atom containing 5 or 6 membered heteroaromatic ring, optionally substituted by one or more straight or branched C 1-4 alkyl group, straight or branched C 1-4 alkoxy group, or halogen atom; X stands for a â€”CH 2 â€” group, â€”NHâ€” group, â€”NR 8 â€” group, or a sulphur atom or an oxygen atom or a sulpho group or a sulphoxy groupâ€” wherein R 8 stands for a straight or branched C 1-4 alkyl group or C 3-6 cycloalkyl groupâ€”; n stands for zero, 1 or 2â€” and their salts and solvates, optically active isomers and their salts and solvates.