Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1981-03-30
1982-06-08
Rizzo, Nicholas S.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
424246, 544 28, C07D50118
Patent
active
043340644
ABSTRACT:
7-Acylamido-2-halomethylidene-3-methyl and 3-acetoxymethyl-3-cephem-4-carboxylic acids and esters are prepared via reaction of the corresponding 2-exomethylene-3-cephem ester sulfoxides with chloro (or bromo) dimethyliminium chlorides (or bromides). The 2-halomethylidene derivatives are useful as antimicrobial agents and intermediates to novel 2-acyloxy-methylidene cephalosporins and to the known 2-aryl (or alkyl) mercaptomethylidene cephalosporins.
REFERENCES:
patent: 3578660 (1971-05-01), Cooper
patent: 3660396 (1972-05-01), Wright
patent: 3852282 (1974-12-01), Dolfini
patent: 3923795 (1975-12-01), Spry
patent: 3933806 (1976-01-01), Spry
patent: 3963712 (1976-06-01), Koyama
patent: 4098999 (1978-07-01), Dolfini
Wright et al., J. Med. Chem. 14 420-425 (1971).
Kaiser et al., J. Med. Chem. 14 426-429 (1971).
Eli Lilly and Company
Rizzo Nicholas S.
Scanlon William B.
Whale Arthur R.
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