Synthesis, configuration and properties of some new 3,4,5-substituted oxazolidin-2-ones

Abstract

KEYWORDSNovel 3,4,5-substituted-oxazolidin-2-ones containing piperazine, 1-(4-chlorophenyl) piperazine, benzhydrylpiperazine, morpholine and piperidine rings were synthesized via Mannich reaction. The stereochemistry of syn and anti-isomers was assigned using the observed differences in the chemical shifts of the oxazolidinone ring protons and the values of vicinal coupling constants ( 3 J) between the two protons of the oxazolidin-2-one ring. For all compounds NOE (Nuclear Overhauser Effect) NMR spectra were…