(4S)-4-Benzyl-N-{[(4S)-4-benzyl-2-oxo-1,3-oxazolidin-3-yl]sulfonyl}-2-oxo-1,3-oxazolidine-3-carboxamide

Abstract

The title compound, C21H21N3O7S, contains an oxazolidinone ring and a sulfonamide group, both characteristic for biologically and pharrmaceutically active compounds. Both stereogenic centres reveal an S absolute configuration. The two oxazolidinone rings are in an envelope conformation with the methylene carbon flap atoms deviating by 0.428 (1) and 0.364 (2) Å from the best least-square planes formed by the four other ring atoms. An intramolecular N—H...O hydrogen bond contributes to the folded conformation of the molecule. In the crystal, weak intermolecular C—H...O interactions connect the molecules into helices along the the twofold screw axes.