Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...
Patent
1989-05-10
1991-04-16
Rizzo, Nicholas S.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Heterocyclic carbon compounds containing a hetero ring...
540222, C07D50138, A61K 31545
Patent
active
050082590
ABSTRACT:
Cephalosporin antibiotics having a 3-position substituent of the formula: ##STR1## are described, wherein R.sup.1 is hydrogen or certain optionally substituted alkyl groups; X is a benzene ring or certain 5 or 6-membered heterocyclic ring and is fused to ring Y which is a nitrogen containing heteroaryl group; R.sup.2 and R.sup.3 are independently hydroxy or an in vivo hydrolysable ester thereof, and ring system X-Y is optionally substituted. Processes for their preparation and use are described.
REFERENCES:
patent: 4855420 (1989-08-01), Jung
Bell William
Jung Frederick H.
Siret Patrice J.
I.C.I.-Pharma
Imperial Chemical Industries plc
Rizzo Nicholas S.
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