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pubmed-article:7506312pubmed:abstractTextA series of 2-(dipropylamino)tetralin derivatives in which the C8 substituent is varied has been prepared and evaluated pharmacologically to explore the importance of the C8 substituent in the interaction of 2-aminotetralin-based ligands with serotonin (5-HT1A) receptors. Enantiopure derivatives were prepared by facile palladium-catalyzed reactions of the triflates of the enantiomers of 8-hydroxy-2-(dipropylamino)tetralin (8-OH-DPAT, 1). The affinity of the compounds for the 5-HT1A receptors was evaluated by competition experiments with [3H]-8-OH-DPAT in rat hippocampal and cortical tissue. In addition, the compounds were evaluated for central 5-HT and dopamine receptor stimulating activity in vivo by use of biochemical and behavioral assays in rats. With the exception of the carboxy-substituted derivative which is devoid of 5-HT1A receptor affinity, the compounds have moderate to high affinities (K(i) values range from 0.7 to 130 nM) for 5-HT1A receptors. Surprisingly, several of the derivatives do not produce any apparent effects in vivo although they have fairly high 5-HT1A receptor affinities. However, the methoxycarbonyl- and acetyl-substituted derivatives are potent 5-HT1A receptor agonists in vivo and exhibit in vitro affinities in the same range as the enantiomers of 1.lld:pubmed
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pubmed-article:7506312pubmed:articleTitleDerivatives of 2-(dipropylamino)tetralin: effect of the C8-substituent on the interaction with 5-HT1A receptors.lld:pubmed
pubmed-article:7506312pubmed:affiliationDepartment of Organic Pharmaceutical Chemistry, Uppsala Biomedical Centre, Uppsala University, Sweden.lld:pubmed
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