Process for the preparation of cephalosporins from the correspon

Details Process for the preparation of cephalosporins from the correspon Process for the preparation of cephalosporins from the correspon

1975-08-04

1977-04-19

Rizzo, Nicholas S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

204158R, C07D50108

Patent

active

040187764

ABSTRACT:
A process is disclosed for preparing a cephalosporin of structure: ##STR1## where R is selected from the class consisting of hydrogen, alkyl having from 1 to 4 carbon atoms, cyano-methyl, thienyl-methyl, furyl-methyl, naphthyl-methyl, phenyl-methyl, phenoxy-methyl, phenyl-isopropyl, phenoxy-isopropyl, pyridyl-4-thiomethyl, tetrazolyl-1-methyl;
R.sup.1 is selected from the class consisting of hydroxy, alkoxy having from 1 to 4 carbon atoms, trichloroethoxy, benzyloxy, p-methoxy-benzyloxy, p-nitrobenzyloxy, benzhydryloxy, triphenylmethoxy, phenacyloxy, p-halophenacyloxy; and
Z is selected from the class consisting of hydrogen, hydroxy, --O--Alkyl, --O--CO--Alkyl, --Br, --I, --NH.sub.2, --O--COCH.sub.3, --O--CO--NH.sub.2, and an --S-mononuclear nitrogen heterocyclic ring,

REFERENCES:
patent: 3705892 (1972-12-01), Cooper

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