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KH Neochem Co Ltd
Original Assignee
Kyowa Hakko Kogyo Co Ltd
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Filing date
Publication date
Application filed by Kyowa Hakko Kogyo Co LtdfiledCriticalKyowa Hakko Kogyo Co Ltd
Priority to JP2415178ApriorityCriticalpatent/JPS54130596A/en
Publication of JPS54130596ApublicationCriticalpatent/JPS54130596A/en
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur
(AREA)
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Abstract
NEW MATERIAL:2-Azetidinone derivative of formula I [R1 is H, OH, (alkoxy- substituted) aralkyloxy, acyloxy, sulfonyloxy, amino, azido; R2 is H, alkyl, aralkyl; Y is aryl or heterocyclic group condensed to 3- and 4-positions of 1-azabicyclo [4,2,0]octene ring], and its pharmacologically acceptable salt.
USE: Effective to suppress β-lactamase activity. Useful as a remedy for infectious diseases by applying together with penicillin, cephalosporin, etc.
PROCESS: Intra-molecular Friedel-Crafts reaction of 2-azetidinone derivative of formula II (A is OH, halogen; R3 is aryl, heterocyclic group) in the presence of a catalyst affords the compound I.
COPYRIGHT: (C)1979,JPO&Japio
JP2415178A1978-03-031978-03-032-azetidinone derivative and its preparation
PendingJPS54130596A
(en)
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