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Selectivity of sterically fixed tryptamine and 5-methoxytryptamine derivatives for serotonin receptor subtypes, II: Structure-activity relationships and in vitro pharmacology of N-alkyl- and N,N-dialkyl-3- indolylbicyclo-[2.2.1]-heptane-2-amines

Elz, Sigurd ; Zimmermann, H. ; Rehse, K.


Twenty-four norbornane analogues of tryptamine and 5-methoxytryptamine were investigated for affinity at 5-HT2 receptors of the rat tail artery and proved to be weak non-competitive antagonists of 5-HT. Compound 12 which displayed a marked depression of the concentration-effect curves, was examined for potential interaction with the allosteric binding site of the 5-HT2 receptor. The effects ...


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