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Priority claimed from CH964074Aexternal-prioritypatent/CH617702A5/de
Priority claimed from AT784874Aexternal-prioritypatent/AT333427B/de
Application filed by Ciba Geigy AgfiledCriticalCiba Geigy Ag
Priority to AT926175ApriorityCriticalpatent/AT333436B/de
Publication of ATA926175ApublicationCriticalpatent/ATA926175A/de
Application grantedgrantedCritical
Publication of AT333436BpublicationCriticalpatent/AT333436B/de
Process for the preparation of 6- beta -acylamino-6- alpha -methoxy-penam-3-carboxylic acid compounds and 7- beta -acylamino-7- alpha -methoxy-3-cephem-4-carboxylic acid compounds