JPS5585587A - Substituted azetidinones - Google Patents
Substituted azetidinonesInfo
- 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
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
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) |
-
1978
- 1978-12-22 JP JP16074778A patent/JPS5585587A/en active Pending
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