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Beecham Group PLC
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Beecham Group PLC
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Application filed by Beecham Group PLCfiledCriticalBeecham Group PLC
Publication of ES324155A1publicationCriticalpatent/ES324155A1/en
A process for the preparation of penicillins of the formula: ** (See formula) ** and non-toxic salts thereof, wherein R is a substituted or unsubstituted phenyl or heterocyclic group, which consists of treating an N-protected penicillin of the formula: ** (See formula) ** where R is the group defined above and X and Y are the same or different from each other, each of them being a hydrogen or halogen atom or a lower alkyl or lower alkoxy group, with a heavy metal salt, in aqueous solution or partially aqueous and at a pH comprised between 1 and 7. (Machine-translation by Google Translate, not legally binding)
ES0324155A1965-03-181966-03-12A procedure for the preparation of penicillins. (Machine-translation by Google Translate, not legally binding)
ExpiredES324155A1
(en)
Procedure for the obtaining of new derivatives of heterocyclic hydrazines and their salts (Machine-translation by Google Translate, not legally binding)