1-(3,4,5-Trimethoxyphenyl)indoles of formula: (where R1, R2 are 1-4C alkyl; or R1 + R2 and the attached N-atom form a morpholino, piperidino or pyrrolidino group; n is 2 or 3). (I) have bronchodilator, anticholinergic, diuretic, antidepressant, analgesic, antiinflammatory and sedative activity.
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