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Priority claimed from CH1403473Aexternal-prioritypatent/CH605994A5/en
Priority claimed from CH964074Aexternal-prioritypatent/CH617702A5/en
Priority claimed from AT784874Aexternal-prioritypatent/AT333427B/en
Application filed by Ciba Geigy AgfiledCriticalCiba Geigy Ag
Priority to AT712575ApriorityCriticalpatent/AT333433B/en
Publication of ATA712575ApublicationCriticalpatent/ATA712575A/en
Application grantedgrantedCritical
Publication of AT333433BpublicationCriticalpatent/AT333433B/en
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