37421-04-8Relevant articles and documents
2-(1-naphthyloxy)ethylamines with enhanced affinity for human 5-HT(1Dβ) (h5-HT(1B)) serotonin receptors
Ismaiel,Dukat,Law,Kamboj,Fan,Lee,Mazzocco,Buekschkens,Teitler,Pierson,Glennon
, p. 4415 - 4419 (2007/10/03)
Although the β-adrenergic antagonist propanolol (1) binds at rodent 5- HT(1B) serotonin receptors, it displays low affinity (K(i) > 10 000 nM) for its species homologue 5-HT(1DB) (i.e., h5-HT(1B)) receptors. The structure of propanolol was systematically modified in an attempt to enhance its affinity for the latter population of receptors. Removal of the alkyl hydroxyl group, shortening of the O-alkyl chain from three to two methylene groups, and variation of the terminal amine substituent resulted in compounds, such as N- monomethyl-2-(1-naphthyloxy)-ethylamine (11; K(i) = 26 nM), that display significantly higher h5-HT(1B) affinity than propanolol. Compound 11 was shown to bind equally well at human 5-HT(1Dα) (h5-HT(1D) receptors (K(i) = 34 nM) and was further demonstrated to possess h5-HT(1B) agonist character in an adenylate cyclase assay. It would appear that such (aryloxy)alkylamines may represent a novel class of 5-HT(1D) receptor agonists.