161970-90-7

Upstream product

• 161871-12-1 (3S,4S)-1-<1(R)-(methoxycarbonyl)-2(S)-O-<(tert-butyldimethylsilyl)oxy>propyl>-3-(2-oxo-4,5-diphenyl-1-oxazolinyl)-4-<(S)-2,2-dimethyl-1,3-dioxolan-4-yl>azetidin-2-one 
• 161871-11-0 (2R,3S)-3-(tert-Butyl-dimethyl-silanyloxy)-2-{[1-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-meth-(E)-ylidene]-amino}-butyric acid methyl ester 
• 119599-96-1 methyl O-[tert-butyl(dimethyl)silyl]-D-threoninate 
• 161970-89-4 (E)-2-[(2S,3S)-2-((S)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-4-oxo-3-(2-oxo-4,5-diphenyl-oxazol-3-yl)-azetidin-1-yl]-but-2-enoic acid methyl ester 

Relevant academic research and scientific papers

Asymmetric Syntheses of β-Lactams and Determination of Their Absolute Configuration

Reactions of chiral imines derived from D-glyceraldehyde and threonine derivatives with Oxglycylchloride gave optically active cis-substituted β-lactams.The absolute configuration of key intermediates were determined by X-ray analysis and chemical degradation. - Key words: Asymmetric syntheses, D-glyceraldehyde, threonine, β-lactam, Staudinger reaction