Affinity for dopamine D2, D3, and D4 receptors of 2-aminotetralins. Relevance of D2 agonist binding for determination of receptor subtype selectivity.

Abstract:

:A series of 2-aminotetralins, substituted with a methoxy or a hydroxy group on the 5- or 7-position, and with varying N-alkyl or N-arylalkyl substituents, were prepared and evaluated in binding assays for human dopamine (DA) D2, D3, and D4 receptors. Some members of this series were prepared in former studies, but were never tested in vitro with single receptor subtypes, and these were examined again. None of the tested 2-aminotetralins showed high affinity for the dopamine D4 receptor. However, a number of the 2-aminotetralins showed high affinity for both the D2 and the D3 DA receptors, as exemplified by compounds 11-15 and 21-26, while some had a reasonable selectivity for the DA D3 receptors. The affinities of the 2-aminotetralins for the D21, receptor depended on the type of radioligand (agonist or antagonist) used. The agonist affinity data, obtained by using the agonist ligand [3H]N-0437, are thought to be more relevant for calculating DA receptor subtype selectivity.

journal_name

J Med Chem

authors

van Vliet LA,Tepper PG,Dijkstra D,Damsma G,Wikström H,Pugsley TA,Akunne HC,Heffner TG,Glase SA,Wise LD

doi

10.1021/jm960345l

subject

Has Abstract

pub_date

1996-10-11 00:00:00

pages

4233-7

issue

21

eissn

0022-2623

issn

1520-4804

pii

jm960345l

journal_volume

39

pub_type

杂志文章