Chemical and biological profile of racemic and optically active dialkylaminoalkylnaphthalenes with analgesic activity

NMR, CD and UV spectroscopic studies reveal uncommon binding modes of dapoxetine to native cyclodextrins

Complex formation between the selective serotonin reuptake inhibitor drug (S)-dapoxetine (Dpx) and β-, γ-, and methylated γ-cyclodextrins (CyDs) was studied by complementary experimental techniques.

A step forward in the sigma enigma: a role for chirality in the sigma1 receptor–ligand interaction?

To investigate the role of chirality in the ligand–σ₁ receptor interaction, a series of enantiomeric arylalkylaminoalcohols and arylpyrrolidinols was evaluated by means of both in silico and in vitro studies.

Enantioselective chromatography and absolute configuration of N,N-dimethyl-3-(naphthalen-2-yl)-butan-1-amines: potential sigma1 ligands

We describe the preparation of racemic N,N-dimethyl-3-(naphthalen-2-yl)-butan-1-amines, potential sigma1 ligands, and their resolution via chiral HPLC. In order to obtain enantiopure compounds, direct chromatographic methods of separation using chiral stationary phases were investigated. Different methods suitable for both analytical and semipreparative purposes are proposed. The best resolutions were achieved using cellulose tris (3,5-dimethylphenyl carbamate) (Chiralcel OD and OD-H) and amylose tris (3,5-dimethylphenyl carbamate) (Chiralpak AD). On the basis of the preliminary chromatographic results, the resolution of compound 1 was transferred onto a Chiralcel OD semipreparative column. The enantiomers were obtained in high enantiomeric excess. The configurational assignment was performed by circular dichroism. Computational analysis was used to explore the enantioselective recognition process of compound 1 with the Chiralcel OD stationary phase.

Design, synthesis, and SAR analysis of novel selective sigma1 ligands

A new series of arylalkyl- and alkenylamines was designed, synthesized, and evaluated for binding to sigma(1) and sigma(2) receptors. Many compounds exhibited nanomolar affinity for sigma(1) subtype receptor with good selectivity over sigma(2). A molecular modeling study was conducted in order to rationalize the experimental data, and the structure-receptor affinities are discussed.