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Asahi Chemical Industry Co Ltd
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Asahi Chemical Industry Co Ltd
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Application filed by Asahi Chemical Industry Co LtdfiledCriticalAsahi Chemical Industry Co Ltd
Priority to JP5603475ApriorityCriticalpatent/JPS51133295A/en
Publication of JPS51133295ApublicationCriticalpatent/JPS51133295A/en
PURPOSE: Penicillins and cephalosporins of formula I, which have hydantoin ring, are new: [where A is a group represented by formula II (R is H, lower alkyl or trilower alkylsilyl, etc.) or a group represented by formula III (X is H, OH, lower alkanoyloxy or aroyloxy, etc.); X1 and X2 are O or S; R2 W R4 are H or organic group; Y is hydrocarbon residue], in an example, DL-7-(5-methyl5-phenylhydantoin-3-acetamide) cephalosporanic acid.
COPYRIGHT: (C)1976,JPO&Japio
JP5603475A1975-05-141975-05-14Process for preparing penicillins and cephalosporins having hydantoin ring
PendingJPS51133295A
(en)