AGENT FOR ANIMALS' UTILITY INCREASE AND METHOD OF EFFECTIVE SUBSTANCES PRODUCTION

The growth of livestock is promoted by the new compounds of the formula in which R1 represents hydrogen, alkyl, halogen, halogenoalkyl, hydroxyl, cyano, alkoxycarbonyl, aminocarbonyl, mono- and dialkylaminocarbonyl, alkoxy, halogenoalkoxy, halogenoalkylthio or NHSO2-alkyl, R2 represents hydrogen, hydroxyl, alkoxy or the -NR11R12 radical, R3 represents the radicals mentioned in the case of R1 R4 represents hydroxyl, acyloxy or alkoxy, R5 represents hydrogen or alkyl, R6 represents hydrogen or alkyl, R7 represents hydrogen or alkyl, R8 represents hydrogen or alkyl, X represents C1-C10-alkylene or a direct bond, Y represents oxygen or a direct bond, R9 represents hydrogen, C1-C10-alkyl which is optionally substituted by hydroxyl, alkoxy, acyloxy or the -NR13R14 radical, or represents the COR15 radical or the O-Z-R16 radical, Z represents C1-C10-alkylene, C1-C10-alkenylene or C1-C10-alkinylene, R10 represents hydrogen, halogen, alkyl, alkoxy, hydroxyl or the COR15 radical, R11 represents hydrogen or alkyl, R12 represents hydrogen, alkyl, halogenoalkyl or acyl, R13 represents hydrogen, optionally substituted alkyl or optionally substituted aryl, R14 represents the radicals mentioned in the case of R13, R15 represents hydroxyl, alkoxy or the NR13R14 radical, and R16 represents hydroxyl, alkoxy, acyloxy, the NR13R14 radical or the COR15 radical, and the physiologically acceptable salts and N-oxides thereof. Several new intermediates are also disclosed.