ES444441A1 - A procedure for the preparation of new cephalosporins. (Machine-translation by Google Translate, not legally binding) - Google Patents
A procedure for the preparation of new cephalosporins. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES444441A1 ES444441A1 ES444441A ES444441A ES444441A1 ES 444441 A1 ES444441 A1 ES 444441A1 ES 444441 A ES444441 A ES 444441A ES 444441 A ES444441 A ES 444441A ES 444441 A1 ES444441 A1 ES 444441A1
- Authority
- ES
- Spain
- Prior art keywords
- procedure
- translation
- preparation
- machine
- legally binding
- 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.)
- Expired
Links
Landscapes
- Cephalosporin Compounds (AREA)
Abstract
A procedure for the preparation of new cephalosporins of general formula (I): **(See formula)** where R1 represents a hydrogen atom, a salt-forming cation or a blocking group and R2 represents an acetoxy, carbamoyloxy, 2- (5-methyl-l, 3, 4-thiadiazolyl) thio group or 5- (1-methyl) -l, 2,3,4-tetrazolyl) thio, the procedure of which is to react a compound represented by the general formula (II): **(See formula)** where R1 and R2 are as defined above and R3 represents a hydrogen atom, a group containing silicon or a group containing phosphorus, with a derivative reactive in the carboxyl group of a 4-ethyl-2,3-dioxo-l-piperazinocarboxylic acid represented by formula (III): **(See formula)** optionally in the presence of a base. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES444441A ES444441A1 (en) | 1976-01-19 | 1976-01-19 | A procedure for the preparation of new cephalosporins. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES444441A ES444441A1 (en) | 1976-01-19 | 1976-01-19 | A procedure for the preparation of new cephalosporins. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES444441A1 true ES444441A1 (en) | 1977-11-01 |
Family
ID=8470759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES444441A Expired ES444441A1 (en) | 1976-01-19 | 1976-01-19 | A procedure for the preparation of new cephalosporins. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES444441A1 (en) |
-
1976
- 1976-01-19 ES ES444441A patent/ES444441A1/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19970607 |