Azetidinone 4-disulfides

Details Azetidinone 4-disulfides Azetidinone 4-disulfides

1980-12-01

1984-03-06

Berch, Maril L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2602454, 2603303, 546157, C07D20508, C07D40112, C07D40912, C07D41712

Patent

active

044353219

ABSTRACT:
A process for producing a 2-cephem or 3-cephem derivative compound of the formula: ##STR1## wherein R.sub.1 represents a substituted or unsubstituted amino radical and R.sub.4 represents hydrogen or a radical selected from the group consisting of carboxy, protected carboxy, ester, acid amide, acid anhydride, acid halide, acid azide and carboxy salt, and the dotted line indicates the alternate bond structure providing 3-cephem or 2-cephem, which comprises:

REFERENCES:
patent: 3872086 (1975-03-01), Barton et al.
patent: 3880833 (1975-04-01), Scartazzini
patent: 3927013 (1975-12-01), Barton et al.
patent: 3991060 (1976-11-01), Barton et al.
patent: 4039530 (1977-08-01), Micetich
patent: 4174318 (1979-11-01), Barton et al.
patent: 4225328 (1981-03-01), Woodward
Barton et al. J.C.S. Chem Comm 1971, p. 1137.

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