D. Heber, U. Ravens
Apr 8, 1986
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Quality indicators
Journal
Arzneimittel-Forschung
Abstract
The 5-hydroxy-5H-[1]benzopyrano [4,3-b]pyridines (4) were converted to the acetales 7-10 on treatment with alcoholic solutions in the presence of concentrated hydrochloric acid. Reactions of with aliphatic and aromatic amines yielded the aminoacetales 11-15. The effects of compounds 7-15 were examined on the isolated perfused guinea-pig heart.