IE36117L - Bromination of penicillin-1-oxides - Google Patents
Bromination of penicillin-1-oxidesInfo
- Publication number
- IE36117L IE36117L IE22272A IE22272A IE36117L IE 36117 L IE36117 L IE 36117L IE 22272 A IE22272 A IE 22272A IE 22272 A IE22272 A IE 22272A IE 36117 L IE36117 L IE 36117L
- Authority
- IE
- Ireland
- Prior art keywords
- penicillin
- oxides
- bromination
- bromoarylacetamido
- feb
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D499/00—Heterocyclic compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula:, e.g. penicillins, penems; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Cephalosporin Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
1385472 6-α-Bromoarylacetamido penicillin 1-oxides GLAXO LABORATORIES Ltd 15 Feb 1972 [24 Feb 1971 22 Nov 1971] 5375/71 and 54170/71 Heading C2C 6-α-Bromoarylacetamido penicillin 1-oxides, preferably compounds of general formula wherein R<SP>1</SP> is aryl and R<SP>2</SP> is hydrogen or a carboxyl group other than acyloxymethyl are prepared by brominating a 6-arylacetamido penicillin 1-oxide with a free radical brominating agent. Suitable free radical brominating agents include bromine, an N-bromoamide, an N-bromoimide and 1,3,5-tribromo-1,2,4-triazole and bromination may be initiated by azobisisobutyronitrile or a peroxide. Other means of initiating bromination include irradiation by ultraviolet, visible light or γ-rays. The bromopenicillins may be subjected to a ring enlargement reaction whereby a 3-methylcephem compound is formed. The bromine atom of the cephem or penicillin compounds may be replaced by other nucleophiles. Ampillin and cephalexin may be prepared from the bromo-penicillins and bromocephalosporins respectively.
[GB1385472A]
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB537571A GB1385472A (en) | 1971-02-24 | 1971-02-24 | Antibiotics |
| GB5417071 | 1971-11-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE36117L true IE36117L (en) | 1972-08-24 |
| IE36117B1 IE36117B1 (en) | 1976-08-18 |
Family
ID=26239839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE22272A IE36117B1 (en) | 1971-02-24 | 1972-02-23 | Improvements in or relating to antibiotics |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5421357B2 (en) |
| AT (1) | AT322103B (en) |
| BE (1) | BE779702A (en) |
| CA (1) | CA982557A (en) |
| CH (1) | CH571526A5 (en) |
| DE (1) | DE2208582A1 (en) |
| GB (1) | GB1385472A (en) |
| IE (1) | IE36117B1 (en) |
| NL (1) | NL7202385A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL291457B2 (en) | 2017-01-18 | 2024-06-01 | Alpha 1 Biologics Llc | Therapeutic use of beta-lactams in hematopoiesis, immuno-oncology therapy, and regulation of lipoprotein and apolipoprotein levels |
-
1971
- 1971-02-24 GB GB537571A patent/GB1385472A/en not_active Expired
-
1972
- 1972-02-23 JP JP1815372A patent/JPS5421357B2/ja not_active Expired
- 1972-02-23 DE DE19722208582 patent/DE2208582A1/en active Pending
- 1972-02-23 IE IE22272A patent/IE36117B1/en unknown
- 1972-02-23 NL NL7202385A patent/NL7202385A/xx unknown
- 1972-02-23 BE BE779702A patent/BE779702A/xx unknown
- 1972-02-23 CH CH261372A patent/CH571526A5/xx not_active IP Right Cessation
- 1972-02-23 AT AT147872A patent/AT322103B/en not_active IP Right Cessation
- 1972-11-21 CA CA157,063A patent/CA982557A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AT322103B (en) | 1975-05-12 |
| IE36117B1 (en) | 1976-08-18 |
| GB1385472A (en) | 1975-02-26 |
| JPS4844292A (en) | 1973-06-26 |
| CA982557A (en) | 1976-01-27 |
| BE779702A (en) | 1972-08-23 |
| CH571526A5 (en) | 1976-01-15 |
| NL7202385A (en) | 1972-08-28 |
| DE2208582A1 (en) | 1972-09-21 |
| JPS5421357B2 (en) | 1979-07-30 |
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