| abstract |
The invention relates to a process for the preparation of novel benzo-heterocycles having valuable pharmacological, in particular broncholytic properties for use as medicaments, for example for the treatment of asthma, bronchitis, hayfever, cardiovascular disorders and relaxtion of the uterine musculature. The aim of the invention is the provision of new compounds with long-lasting selective broncholytic action and very low side effects on the heart and skeletal muscles. According to the invention, novel compounds of the formula I are prepared in which, for example: A is a single bond, the group -CH deep 2 -CH deep 2 and the like; R deep 1 OH, O acyl, chlorine or hydrogen; R 2 is hydrogen, methyl or ethyl; m is 2,3 or 4; n is 1,2 or 3; R deep 6 hydrogen or methyl. |