In this paper, the enantiomers of (±)-1, previously studied as α1 and 5-HT1A ligands, were prepared both by resolution of the racemate and asymmetric synthesis. The enantiomeric purity and absolute configuration were determined by means of HPLC and polarimetric analysis. Enantiomers were evaluated for in vitro 5-HT1A and α1 receptor affinity by binding and functional assays. Results indicate that the two enantiomers are almost equally potent at 5-HT1A and α1 receptor systems and, contrary to WB 4101, the stereoselectivity is poor. As further support to these experimental findings, molecular docking studies on the two enantiomers of (±)-1 have been performed and a comparison with those obtained for 5-HT1A potent agonist (R)-flesinoxan and α1d antagonist (S)-WB 4101 has been drawn.

Enantiomeric resolution of [(2,2-diphenyl-1,3-dioxolan-4-yl)methyl](2-phenoxyethyl)amine, a potent α1and 5-HT1Areceptor ligand: an in vitro and computational study / Franchini, Silvia; Baraldi, Anna Maria; Sorbi, Claudia; Pellati, Federica; Cichero, Elena; Battisti, Umberto Maria; Angeli, Piero; Cilia, Antonio; Brasili, Livio. - In: MEDCHEMCOMM. - ISSN 2040-2503. - STAMPA. - 6:4(2015), pp. 677-690. [10.1039/C4MD00484A]

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