CEPHALOSPORIN DERIVATIVES; INTERMEDIATES AND PHARMACEUTICAL COMPOSITIONS

CEPHALOSPORIN DERIVATIVES; INTERMEDIATES AND PHARMACEUTICAL COMPOSITIONS

(57) A cephalosporin derivative of the formula I:in which X is S, O, CH2 or SO,represents one of C-7 acyl groups known in the cephalos porin art, R3 is hydrogen or methoxy, R4 is hydrogen, optionally substituted alkyl or allyl, and R5 is an aromatic heterocyclic ring system which is linked via carbo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BRADBURY, R.H, JUNG, F.H, MARSHAM, P.R, PASQUET, G, LOHMANN, J.J
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
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Beschreibung
Zusammenfassung:(57) A cephalosporin derivative of the formula I:in which X is S, O, CH2 or SO,represents one of C-7 acyl groups known in the cephalos porin art, R3 is hydrogen or methoxy, R4 is hydrogen, optionally substituted alkyl or allyl, and R5 is an aromatic heterocyclic ring system which is linked via carbon, and which contains a quaternised nitrogen atom.