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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Shionogi and Co Ltd
Original Assignee
Shionogi and Co Ltd
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Filing date
Publication date
Application filed by Shionogi and Co LtdfiledCriticalShionogi and Co Ltd
Priority to JP1962076ApriorityCriticalpatent/JPS52102291A/en
Publication of JPS52102291ApublicationCriticalpatent/JPS52102291A/en
PURPOSE: 3-Methylenecephamsulfoxides, useful as the intermediates for cephalasporin antibiotics, are prepared by ring expansion of halopenicillinsufloxides by means of a heavy metal salt.
COPYRIGHT: (C)1977,JPO&Japio
JP1962076A1976-02-251976-02-25Synthesis of 3-methylene cepham derivatives
PendingJPS52102291A
(en)