New condensed derivatives of anpirtoline, in which the pyridine ring is rep
laced with quinoline, isoquinoline, quinazoline, and phthalazine nuclei, ha
ve been synthesized. Their receptor binding profiles (5-HT1A, 5-HT1B) and a
nalgesic activity (hot plate, acetic acid induced writhing) have been studi
ed. The analgesic activity of comprounds 7d, 8b, 8c, and 8e are at least co
mparable to that of the clinically used drugs flupirtine and tramadol under
the same conditions.