چكيده لاتين :
Synthesis of some new monocyclic beta-lactams containing a quaternary carbon center via a [2+2] cycloaddition reaction is described. The reaction of achiral diphenyl ketene with chiral aldimines derived from chiral 2, 3, 4, 6-tetra-O-acetyl-beta-D-galactopyranosylamine, 2, 3, 4, 6-tetra-O-acetyl-beta-D-glucopyranosylamine and different benzaldehydes resulted in the formation of beta-lactams as single diastereomers.
