| abstract |
A compound of the ** formula ** in which R1 is a group of the formula Y-1 in which R22 and R23, independently of one another, are hydrogen, C1-6 alkyl, C1-6 alkoxy, cycloalkyl, aryl , arylalkyl, nitro, cyano, (C1-6 alkyl) -thio, (C1-6 alkyl) -sulfinyl, (C1-6 alkyl) -sulfonyl, C1-6 alkanoyl, halogen or perfluor- (C1-6 alkyl), and at least one of R22 and R23 is different from hydrogen, and R24 is hydrogen, C1-6 alkyl, C1-6 alkoxy, aryl, nitro, cyano, (C1-6 alkyl) -sulfonyl or halogen, or R1 is a group of the formula Y-2 which is a five or six link hetero aromatic ring, attached through the carbon atom to the carbonyl of the amide, said ring contains one, two or three heteroatoms chosen from N, O and S and one or two atoms of said ring are independently substituted with each other by C1-6 alkyl, cycloalkyl, halogen, cyano, perfluor- (C1-6 alkyl) or aryl and at least one of said substituted atoms is adjacent to the car atom bond attached to the carbonyl of the amide. |