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Hodogaya Chemical Co Ltd
Original Assignee
Hodogaya Chemical Co Ltd
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Filing date
Publication date
Application filed by Hodogaya Chemical Co LtdfiledCriticalHodogaya Chemical Co Ltd
Priority to JP2005276ApriorityCriticalpatent/JPS52105190A/en
Publication of JPS52105190ApublicationCriticalpatent/JPS52105190A/en
PURPOSE: The title compound, which is intermediate of cefalexin antibiotics, is prepared in high yield by the ring expansion of the ester of penicillinsulfoxide in the presence of a specific catalyst.
COPYRIGHT: (C)1977,JPO&Japio
JP2005276A1976-02-271976-02-27Preparation of cephalosporanic-acid-2-nitrobutylester
PendingJPS52105190A
(en)