| abstract |
Process for preparing benzoquinolicin derivatives and, more particularly, for preparing compounds of the general formula ** (Formula) ** in which both R1 signify an alkyl group containing 1 to 4 carbon atoms or together form a methylene group, R2 is cyano or an alkoxycarbonyl group containing alkyl of 1 to 4 carbon atoms, R3 is hydroxy or alkanoyloxy containing alkyl of 1 to 4 carbon atoms in an alpha or beta position, and acid addition salts thereof . |