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.)
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Fujisawa Pharmaceutical Co Ltd
Original Assignee
Fujisawa Pharmaceutical Co Ltd
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Filing date
Publication date
Priority claimed from JP803673Aexternal-prioritypatent/JPS563874B2/ja
Priority claimed from JP3377073Aexternal-prioritypatent/JPS5652906B2/ja
Application filed by Fujisawa Pharmaceutical Co LtdfiledCriticalFujisawa Pharmaceutical Co Ltd
Publication of ES422343A1publicationCriticalpatent/ES422343A1/es
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
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Cephalosporin Compounds
(AREA)
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
ES422343A1973-01-171974-01-16Un procedimiento para preparar acidos metil-2 o 3-cefem-4- carboxilicos 3-sustituidos.
ExpiredES422343A1
(es)