Patent ID: 7056916

Claim:
A compound of formula 1 wherein: n is 1; R 1 is hydrogen, halogen, C 1 –C 4 -alkyl, or —O—C 1 –C 4 -alkyl; R 2 is hydrogen, halogen, C 1 –C 4 -alkyl or —O—C 1 –C 4 -alkyl; R 3 is C 1 –C 4 -alkyl, halogen, —O—C 1 –C 4 -alkyl, —O—C 1 –C 4 -alkylene-COOH, or —O—C 1 –C 4 -alkylene-CO—O—C 1 –C 4 -alkyl, or an acid addition salt thereof with a pharmacologically acceptable acid.