Patent ID: 8044055

Claim:
A compound of formula I wherein R 1 represents phenyl optionally substituted 1 to 3 times by substituents each independently selected from the group consisting of halogen, methyl, methoxy, trifluoromethyl and trifluoromethoxy; R 2 represents an alkoxyalkoxyalkyl group, a dihydroxyalkyl group, a dimethoxyalkyl group or a (2,2-dimethyl-[1,3]dioxolan-4-yl)-alkyl group; or R 2 represents a group of the formula wherein either m is 1 and n is 2 or 3, or m is 2 and n is 2; and X represents O, S, NH, NR 3 , SO or SO 2 ; R 3 represents alkyl or arylalkyl; or also R 2 represents 2,2,6,6-tetramethyl-piperidin-4-yl; each of R 4 and R 5 represents independently hydrogen or methyl; R 6 represents alkoxy; and Y represents alkylene or phenylalkylene, and Z represents —OH, —COOH, cyano, tetrazolyl or —COOR 7 , R 7 representing alkyl; or a salt of such a compound.