Cephalosporins and homologues, preparations and pharmaceutical c

Details Cephalosporins and homologues, preparations and pharmaceutical c Cephalosporins and homologues, preparations and pharmaceutical c

1999-01-11

1999-12-14

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540221, 540300, 540301, A61K 31545, C07D50146

Patent

active

060019972

ABSTRACT:
.beta.-Lactam antibiotics of formula (I) or a salt thereof, wherein R.sup.1 is hydrogen, methoxy or formamido; R.sup.2 is an acyl group; CO.sub.2 R.sup.3 is a carboxy group or a carboxylate anion, or R.sup.3 is a readily removable carboxy protecting group; R.sup.4 represents up to four substituents; X is S, SO, SO.sub.2, O or CH.sub.2 ; m is 1 or 2; and n is 0, useful in the treatment of bacterial infections. ##STR1##

REFERENCES:
patent: 3959267 (1976-05-01), Nyler et al.
patent: 5602117 (1997-02-01), Burton et al.

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