Improved process for preparing cephalosporins

Improved process for preparing cephalosporins

The invention relates to an improved process for preparing cephalosporins by reaction compounds such as 7-amino -cephalosporanic acid, 7-amino-3-deacetoxy-cephalosporanic acid or their derivatives with derivatives of alpha -amino acids in the presence of a properly immobilized penicillin acylase enz...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: JOHN PAUL GARDNER
Format: Patent
Sprache:eng
Schlagworte:
BEER
BIOCHEMISTRY
CHEMISTRY
ENZYMOLOGY
FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE
HETEROCYCLIC COMPOUNDS
METALLURGY
MICROBIOLOGY
MUTATION OR GENETIC ENGINEERING
ORGANIC CHEMISTRY
SPIRITS
VINEGAR
WINE
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The invention relates to an improved process for preparing cephalosporins by reaction compounds such as 7-amino -cephalosporanic acid, 7-amino-3-deacetoxy-cephalosporanic acid or their derivatives with derivatives of alpha -amino acids in the presence of a properly immobilized penicillin acylase enzyme under the following conditions, independently, or in combination: (1) at a temperature ranging from 0 DEG C to +20 DEG C; or (2) at ambient pH; with a high molar ratio of ( alpha -amino acid to a cephalosporanic nucleus.