ES442262A1 - Procedure for obtaining O-substitute 7-beta-amino-3-cefem-3-ol-4-carboxylic acid compounds. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for obtaining O-substitute 7-beta-amino-3-cefem-3-ol-4-carboxylic acid compounds. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES442262A1 ES442262A1 ES442262A ES442262A ES442262A1 ES 442262 A1 ES442262 A1 ES 442262A1 ES 442262 A ES442262 A ES 442262A ES 442262 A ES442262 A ES 442262A ES 442262 A1 ES442262 A1 ES 442262A1
- Authority
- ES
- Spain
- Prior art keywords
- formula
- group
- compound
- cephem
- salt
- 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
Procedure for obtaining 7-amino-3-cephem-3-ol-4-carboxylic acid or substituted compounds of formula **(See formula)** wherein it means hydroxy or a moiety which together with the carbonyl group -C (= O) forms a protected carboxyl group, and R3 means a hydrocarbon moiety, optionally substituted, or an acyl group, or the salts thereof, characterized in that Cephem-3-one compounds of the formula **(See formula)** or a corresponding enol with a double bond at the 2,3 or 3,4 position, is transformed into an enolic derivative with a functionally modified hydroxy group of the formula -O-R3 at the 3 position, or a compound of the formula **(See formula)** wherein R2 and R3 have the meanings indicated above, and R0A signifies a protecting amino group and R0b signifies hydrogen or an acyl moiety, or R0A and R0b together signify a bivalent protecting amino group, the amino group at position 7 is released, or a 2-cephem compound of the formula **(See formula)** the corresponding 3-cephem compound is isomerized, and, if desired, in a compound obtained of formula II, the protected carboxyl group of formula -C (= O) -R2A is transformed into the free carboxyl group or another protected carboxyl group, and/or, if desired, a compound obtained with a salt-forming group is transformed into a salt, or a salt obtained in the free compound or another salt and/or, if desired, a mixture obtained from isomeric compounds is separates into different isomers. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH978872A CH587268A5 (en) | 1972-06-29 | 1972-06-29 | Substd carboxylic acid derivs - broad spectrum antibiotics and inters |
CH1872272A CH605987A5 (en) | 1972-12-22 | 1972-12-22 | Substd carboxylic acid derivs |
CH265573A CH605988A5 (en) | 1973-02-23 | 1973-02-23 | Substd 7-beta-amino ceph-3-em-3-ol 4-carboxylic acids |
CH738873 | 1973-05-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES442262A1 true ES442262A1 (en) | 1977-07-01 |
Family
ID=27428471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES442262A Expired ES442262A1 (en) | 1972-06-29 | 1975-10-31 | Procedure for obtaining O-substitute 7-beta-amino-3-cefem-3-ol-4-carboxylic acid compounds. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES442262A1 (en) |
-
1975
- 1975-10-31 ES ES442262A patent/ES442262A1/en not_active Expired
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