| 摘要 |
The present invention relates to a method of treating chronic or non-chronic respiratory disorders, consisting in administering to the patient by the oral, rectal or parenteral route, a medicament for dilating the bronchi, comprising as active ingredient at least one compound of formula I or one of its pharmaceutically acceptable salts: <IMAGE> I in which A represents O or S, R1, R2, R3, R4 represent the hydrogen atom, an atom of halogen, an alkyl group with 1 to 4 carbon atoms or an alkoxy or alkenyloxy group, Z1 and Z2 represent an alkyl group or form with the nitrogen atom to which they are attached a saturated heterocyclic compound such as, in particular, pyrrolidine, piperidine, morpholine.
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