90244-12-5Relevant articles and documents
NOVEL 2-METHYL-1-OXACEPHALOSPORINS 1. SYNTHESIS OF 2-METHYL-3-NOR-1-OXACEPHEM NUCLEUS
Okonogi, Tsuneo,Shibahara, Seiji,Murai, Yasushi,Inouye, Sigeharu,Kondo, Shinichi,Christensen, Burton G.
, p. 791 - 795 (2007/10/02)
The 2α- and 2β-methyl-1-oxacephems were synthesized stereoselectively starting from (3R,4S)-oxazolinoazetidinone by reaction with chiral alcohols followed by intramolecular carbene insertion of α-diazo-β-keto intermediates.