JPS5585587A - Substituted azetidinones - Google Patents

Substituted azetidinones

Info

Publication number
JPS5585587A
JPS5585587A JP16074778A JP16074778A JPS5585587A JP S5585587 A JPS5585587 A JP S5585587A JP 16074778 A JP16074778 A JP 16074778A JP 16074778 A JP16074778 A JP 16074778A JP S5585587 A JPS5585587 A JP S5585587A
Authority
JP
Japan
Prior art keywords
double bond
ester
formula
methylene
acyloxy
Prior art date
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.)
Pending
Application number
JP16074778A
Other languages
Japanese (ja)
Inventor
Noriyoshi Inukai
Shinichi Tsukamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamanouchi Pharmaceutical Co Ltd
Original Assignee
Yamanouchi Pharmaceutical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yamanouchi Pharmaceutical Co Ltd filed Critical Yamanouchi Pharmaceutical Co Ltd
Priority to JP16074778A priority Critical patent/JPS5585587A/en
Publication of JPS5585587A publication Critical patent/JPS5585587A/en
Pending legal-status Critical Current

Links

Landscapes

  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Cephalosporin Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

NEW MATERIAL:Compounds of formula I [one of dotted lines is a double bond and the other is a single bond; X is methylene, group of formula II (n is 0W2); R1 is H, when the double bond is on the X side or hydroxyl or acyloxy, when it is on the other side; R2 is hydroxyl or acyloxy, when the double bond is on the X side and there is no R2, when the double bond is on the other side; R3 is H, ester) or their salts.
EXAMPLE: 3-Acetoxy-Δ3-cephem-4-carboxylic t-butyl ester.
USE: β-Lactamase inhibitor.
PREPARATION: The reaction of a compound of formula III (ϕ is phenyl; X' is methylene, S; R4 is ester) with an equimolar or excess amount of acid anhydride as acetic anhydride is carried out in an organic solvent as benzene to form the compound of formula I where X is methylene or S and R3 is ester.
COPYRIGHT: (C)1980,JPO&Japio
JP16074778A 1978-12-22 1978-12-22 Substituted azetidinones Pending JPS5585587A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16074778A JPS5585587A (en) 1978-12-22 1978-12-22 Substituted azetidinones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16074778A JPS5585587A (en) 1978-12-22 1978-12-22 Substituted azetidinones

Publications (1)

Publication Number Publication Date
JPS5585587A true JPS5585587A (en) 1980-06-27

Family

ID=15721575

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16074778A Pending JPS5585587A (en) 1978-12-22 1978-12-22 Substituted azetidinones

Country Status (1)

Country Link
JP (1) JPS5585587A (en)

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