ChemInform Abstract: Novel Synthesis of (3R,4R)‐4‐Acetoxy‐3‐[1′(R)‐tert‐butyldimethylsilyloxyethyl] Azetidin‐2‐one: A Key Intermediate for Penem and Carbapenem Synthesis.

Abstract

Antibiotics U 1200Novel Synthesis of (3R,4R)-4-Acetoxy-3-[1'(R)-tert-butyldimethylsilyloxyethyl] Azetidin-2-one: A Key Intermediate for Penem and Carbapenem Synthesis. -2,10-Camphorsultam is used as chiral auxiliary for a novel approach to title compound (XIII), a key intermediate in the industrial-scale synthesis of new-generation β-lactams. The Michael addition to (VII) and the last step to the targeted compound follows known procedures. -(SINGH, S. K.; SINGH, G. B.; BYRI, V. K.; SATISH, B.; DHAMJEWAR*, R.; GOPALAN, B.; Synth. Commun. 38 (2008) 3, 456-464; Matrix Lab. Ltd., Medak Dist, Jinnaram 502 325, India; Eng.) -H. Haber 28-204