The invention relates to chemico-pharmaceutical industry, in particular to bioactive substances such as amidated derivates of 1-quinolinyl propanoic acids exhibiting diuretic activity. Disclosed are 3-(3-alkylcarbamoyl-4-hydroxy-2-oxo-1,2-dihydro-1-quinolinyl)-propanoic acids of general formula:,wherein R = -CHCH=CH, or -i-CH,exhibiting diuretic activity.
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