122691-91-2

Upstream product

• 124166-14-9 2-<3-benzyl-6-oxo-2-thia-4,7-diaza-(1R,5R)-bicyclo-<3,2,0>-hept-3-en-7-yl>-pivaloyloxymethyl acetate 
• 87996-80-3 2-<3-benzyl-6-oxo-2-thia-4,7-diaza-(1R,5R)-bicyclo-<3.2.0>-hept-3-en-7-yl>-acetic acid 
• 18997-19-8 Chloromethyl pivalate 
• 501-53-1 benzyl chloroformate 
• 122691-75-2 2-(3-phenylacetamido-4-thiol-(3R,4R)-azetidin-2-on-1-yl)-pivaloyloxymethyl acetate 

Relevant academic research and scientific papers

Synthesis and biological evaluation of new C(4) heterofunctionalized monocyclic β-lactams derived from penicillin G

A simple and practical methodology has been developed for the preparation of monocyclic β-lactams 6 derived from penicillin G, possessing a thiocarbonyl (6a) or a sulfonyl (6b) substituent at C(4) as potentially good leaving groups.Two phthalidyl ester pr