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Application filed by Toyama Chemical Co LtdfiledCriticalToyama Chemical Co Ltd
Priority to AT2372ApriorityCriticalpatent/AT308970B/de
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Publication of AT308970BpublicationCriticalpatent/AT308970B/de
C07D501/00—Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula:, e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
C07D501/02—Preparation
C07D501/04—Preparation from compounds already containing the ring or condensed ring systems, e.g. by dehydrogenation of the ring, by introduction, elimination or modification of substituents
C07D501/06—Acylation of 7-aminocephalosporanic acid
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Organic Chemistry
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AT2372A1972-01-031972-01-03Verfahren zur Herstellung von Cephalosporinen
AT308970B
(de)