NEW ORGANIC COMPOUNDS,PROCESSES FOR THEIR PRODUCTION AND THEIR USE

The process for preparing cephalosporanic acid derivatives (I) and salts thereof with bases as well as solvates thereof, comprising reacting a compound of the formula II: (II) wherein R3 represents hydrogen or an amino protecting group and R2 represents hydrogen, an easily removable ester group or o...

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Bibliographische Detailangaben
Hauptverfasser:	HAMBERGER HELMUT, FLIRI HANS
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:	The process for preparing cephalosporanic acid derivatives (I) and salts thereof with bases as well as solvates thereof, comprising reacting a compound of the formula II: (II) wherein R3 represents hydrogen or an amino protecting group and R2 represents hydrogen, an easily removable ester group or other carboxyl protecting group, with a compound of formula IIIa, (IIIa) wherein R1 represents hydrogen, an easily removable ester group or other carboxyl protecting group, and R4 is a 2-benzothiazol group and salts thereof with bases, and if required removing any ester group or protecting group.