Structural study of N-(1-benzoyl-3-pyeprolpdinyl) benzamide

Oxazolidinones show potent activity against vancomycin-resistant Staphyloco ccus aureus (VRSA) species, and are currently under active development. We present NMR spectroscopy and molecular dynamics calculation studies on N-(1 -benzoyl-3-pyrrolidinyl) benzamide, an oxazolidinone derivative with substi tution at the amine group of 3-pyrrolidinamine. The H-1-NMR and C-13-NMR sp ectra exhibited two sets of peaks, one major and one minor, giving rise to the existence of isomers at room temperature. In order to deduce the nature of its isomeric distribution, a series of derivatives were synthesized and analyzed using NMR spectroscopy and computer-aided molecular modeling (CAM M) simulations. The results suggest that rotation of the benzoyl group atta ched to the secondary amine in N-(1-benzoyl-3-pyrrolidinyl) benzamide is re sponsible for conformational heterogeneity.