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  • Title: Structure-activity relationship studies on the 5-HT(1A) receptor affinity of 1-phenyl-4-[omega-(alpha- or beta-tetralinyl)alkyl]piperazines. 4.
    Author: Perrone R, Berardi F, Colabufo NA, Leopoldo M, Tortorella V, Fornaretto MG, Caccia C, McArthur RA.
    Journal: J Med Chem; 1996 Dec 06; 39(25):4928-34. PubMed ID: 8960552.
    Abstract:
    The synthesis of 1-phenylpiperazines, linked in the alpha or beta position of the tetralin moiety on the terminal part of the N-4 alkyl chain, and their radioligand binding affinities for 5-HT(1A), 5-HT(2A), D-1, D-2, alpha1, and alpha2 receptors along with SAR studies on the 5-HT(1A) receptor are reported. Several changes have been carried out on previous structures of type 2, by inserting the alkyl chain with variable length in the alpha or beta position of the tetralin moiety and by changing the position of the methoxy group on the aromatic ring of the tetralin nucleus. The highest affinity (IC50 = 0.50 nM) and selectivity for the 5-HT(1A) receptor were showed by 1-phenylpiperazine 2a with a three-membered alkyl chain bearing a 5-methoxytetralin-1-yl ring in the omega position.
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