Process for cephalosporin antibiotic intermediates

Details Process for cephalosporin antibiotic intermediates Process for cephalosporin antibiotic intermediates

1975-10-23

1977-06-21

Rizzo, Nicholas S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D50104

Patent

active

040310841

ABSTRACT:
7-Acylamido-3-exomethylenecepham ester sulfoxides are reacted with ozone to provide the corresponding 3-hydroxy-3-cephem ester sulfoxides, intermediates for 3-methoxy and 3-halo substituted cephalosporin antibiotics; e.g., p-nitrobenzyl 7-phenoxyacetamido-3-exomethylenecepham-4-carboxylate-1-oxide provides the corresponding 3-hydroxy-3-cephem ester sulfoxide.

REFERENCES:
patent: 3668201 (1972-06-01), Gutowski
patent: 3668202 (1972-06-01), Foster et al.
patent: 3917587 (1975-11-01), Chauvette

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