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Application filed by Glaxo Group LtdfiledCriticalGlaxo Group Ltd
Publication of BE874983ApublicationCriticalpatent/BE874983A/en
C07D503/00—Heterocyclic compounds containing 4-oxa-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula:, e.g. oxapenicillins, clavulanic acid derivatives; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
BE0/194124A1978-03-221979-03-21
PROCESS FOR PREPARING ANTIBIOTICS OF THE BETA-LACTAM CLASS
BE874983A
(en)