| abstract |
The invention relates to novel compounds of the formula (I) <IMAGE> in which R1 denotes a hydrogen or halogen atom, an alkoxy, alkyl, nitro, cyano, alkoxyalkyl, hydroxy, alkenyl, alkenyloxy, CF3, amino or alkylamino group, R2 denotes a hydrogen or halogen atom, or an alkoxy, alkyl or acylamino group, R2 and R3 together denote a 3,4-methylenedioxy or 2,3-butadienyl group, R3 denotes a hydrogen or halogen atom, or an alkoxy or alkyl group, R4 denotes a hydrogen atom or an alkyl group, R5 denotes a hydrogen atom, or an alkyl or aminoalkyl group, R6 denotes a halogen atom, or an alkyl, alkoxy, alkoxycarbonyl or CF3 group, R7 denotes a hydrogen or a halogen atom, an alkoxy group, or, together with R6, a 3,4-methylenedioxy group, R8 denotes a hydrogen atom or an alkoxy group, and their acid addition salts. |