Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
Ciba AG
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Filing date
Publication date
Priority claimed from CH865669Aexternal-prioritypatent/CH524633A/de
Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Publication of ES380395A1publicationCriticalpatent/ES380395A1/es
Un procedimiento para la preparacion de compuestos semisin-teticos utilizados en la produccion de cefalosporinas, peni-cilinas y compuestos antibioticos relacionados de beta-lac- tama.
Procedimiento para la obtencion de compuestos de acido 6 be-ta-acilamino-6alfa-metoxi-penam-3-carboxilico y de acido 7- betaacilamino-7alfa-metoxi- 3 - cefem-4-carboxilico.