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Beecham Research Laboratories Ltd
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Beecham Research Laboratories Ltd
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Priority claimed from GB1141260Aexternal-prioritypatent/GB905778A/en
Application filed by Beecham Research Laboratories LtdfiledCriticalBeecham Research Laboratories Ltd
Priority to FR857298ApriorityCriticalpatent/FR1305382A/fr
Application grantedgrantedCritical
Publication of FR1305382ApublicationCriticalpatent/FR1305382A/fr
C07D499/00—Heterocyclic compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula:, e.g. penicillins, penems; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
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Chemical & Material Sciences
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Organic Chemistry
(AREA)
FR857298A1960-03-311961-03-30Procédé de préparation de pénicillines et de leurs sels non toxiques
ExpiredFR1305382A
(fr)