A pharmaceutical composition comprising a compound of formula 1 wherein: n is 1 or 2; R1 is hydrogen, C1-C4-alkyl, halogen, OH, or —O—C1-C4-alkyl; R2 is hydrogen, C1-C4-alkyl, halogen, OH, or —O—C1-C4-alkyl; R3 is hydrogen, C1-C4-alkyl, OH, halogen, —O—C1-C4-alkyl, —O—C1-C4-alkylene-COOH, or —O—C1-C4-alkylene-CO—O—C1-C4-alkyl, or an acid addition salt thereof with a pharmacologically acceptable acid, or a solvate or hydrate thereof; and a pharmaceutically acceptable excipient or carrier, and methods for using the pharmaceutical formulation in the treatment of chronic obstructive pulmonary disease (COPD).