3,4-disubstituted phenylethanolaminotetralincarboxylate derivatives

摘要

The present invention relates to 3,4-disubstituted phenylethanolaminotetralincarboxylic acid derivatives represented by the general formula: Äwherein Q represents a vinylene group or a group represented by the general formula: -A-(CH2)m- (wherein A represents an oxygen atom or a methylene group; and m is an integer of from 1 to 6); R represents a hydrogen atom or a lower alkyl group; n is an integer of 1 or 2; the carbon atom marked with * represents a carbon atom in R configuration, S configuration or a mixture thereof; and the carbon atom marked with (S) represents a carbon atom in S configurationÜ and pharmaceutically acceptable salts thereof, which have a selective beta 2-adrenergic receptor stimulating effect with relieved burdens on the heart such as tachycardia and are useful as an agent for the prevention of threatened abortion and premature labor, a bronchodilator and an agent for pain remission and promoting stone removal in urolithiasis.