Patent ID: 6951888

Claim:
A method for treatment of asthma, chronic obstructive pulmonary disease (COPD), premature labor in midwifery (tocolysis), atrioventricular block, bradycardic heart rhythm disorders, cardiovascular shock, or itching and irritation of the skin in a patient, the method comprising administering to the patient in need thereof an effective amount of a compound of general formula 1 wherein: R 1 is C 1 -C 4 -alkyl; R 2 is C 1 -C 4 -alkyl; and R 3 is C 1 -C 4 -alkyl or phenyl, each optionally mono- or polysubstituted, or R 2 and R 3 together are —CH 2 —CH 2 — or —CH 2 —CH 2 —CH 2 —, or the corresponding acid addition salt with a pharmacologically acceptable acid.