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Your search keyword '"Oxacephem"' showing total 2 results
Start Over Descriptor "Oxacephem" Journal heterocycles
2 results on '"Oxacephem"'

1. Novel 2-Methyl-1-oxacephalosporins 2. Synthesis of 3-Substituted 2-Methyl-1-oxacephem Nucleus

Author

Tsuneo Okonogi, Seiji Shibahara, Sigeharu Inouye, Yasushi Murai, Burton G. Christensen, and Shinichi Kondo

Subjects
Pharmacology, Bicyclic molecule, Intramolecular reaction, Stereochemistry, Organic Chemistry, Analytical Chemistry, chemistry.chemical_compound, medicine.anatomical_structure, chemistry, Intramolecular force, Wittig reaction, medicine, Lactam, Stereoselectivity, Nucleus, Oxacephem
Abstract

The stereoselective syntheses of 3-substituted 2α- and 2β-methyl-1-oxacephems have been achieved through the intramolecular Wittig condensations of 4-(1-methylpropoxy)azetidinones

Published
1990
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2. Novel 2-Methyl-1-oxacephalosporins 1. Synthesis of 2-Methyl-3-nor-1-oxacephem Nucleus

Author

Shinichi Kondo, Sigeharu Inouye, Tsuneo Okonogi, Seiji Shibahara, Yasushi Murai, and Burton G. Christensen

Subjects
Pharmacology, Bicyclic molecule, Stereochemistry, Organic Chemistry, Analytical Chemistry, chemistry.chemical_compound, medicine.anatomical_structure, chemistry, Intramolecular force, medicine, Stereoselectivity, Carbene, Nucleus, Oxacephem
Abstract

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

Published
1990
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