| abstract |
5-Substituted tryptamine compounds are provided, which exhibit selectivity towards 5-HTD1 receptors and consequently show potential in alleviation of the symptoms of migraine. The analogs are represented by general chemical formula (I) in which T represents an optionally substituted thiophene group of formula (a) bonded to the indole nucleus through its 2- or 3-position, or an optionally substituted furan group of formula (b) bonded to the indole nucleus through its 2- or 3-position; X represents H, C1-C4 alkyl, C1-C4 hydroxyalkyl or halogen, at the 4- or 5-position of the nucleus; Y represents a direct bond or a C1-C3 alkylene group optionally substituted with hydroxyl; and Z represents amino, mono- or di-N-lower alkyl-substituted amino, or an N-heterocyclic group selected from pyrrolidine, pyrroline, azetidine and piperidine, the N-heterocyclic group being optionally substituted with at least one substituent independently selected from lower alkyl, lower alkoxy-lower alkyl and hydroxy-lower alkyl. |