FR2221517A1 - Recovery of rieamycin from broths - by oxidn to an insol form - Google Patents
Recovery of rieamycin from broths - by oxidn to an insol formInfo
- Publication number
- FR2221517A1 FR2221517A1 FR7309816A FR7309816A FR2221517A1 FR 2221517 A1 FR2221517 A1 FR 2221517A1 FR 7309816 A FR7309816 A FR 7309816A FR 7309816 A FR7309816 A FR 7309816A FR 2221517 A1 FR2221517 A1 FR 2221517A1
- Authority
- FR
- France
- Prior art keywords
- insol
- rieamycin
- oxidn
- broths
- recovery
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D498/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
- C07D498/08—Bridged systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D498/12—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains three hetero rings
- C07D498/20—Spiro-condensed systems
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Abstract
Rifamycin B in a fermentation broth is oxidised with NaNO2, NaS2O3 or H2O at 15-25 degrees C and pH 4-75 and the insol rifamycin O recovered. An example uses NaNO2 to give rifamycin O of 95% purity/after recrystallisation) in substantially quantitative yields.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE128149A BE796018A (en) | 1973-03-14 | 1973-02-27 | PROCESS FOR THE EXTRACTION AND ISOLATION OF RIFAMYCINS |
FR7309816A FR2221517A1 (en) | 1973-03-14 | 1973-03-14 | Recovery of rieamycin from broths - by oxidn to an insol form |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7309816A FR2221517A1 (en) | 1973-03-14 | 1973-03-14 | Recovery of rieamycin from broths - by oxidn to an insol form |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2221517A1 true FR2221517A1 (en) | 1974-10-11 |
FR2221517B1 FR2221517B1 (en) | 1977-08-05 |
Family
ID=9116527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7309816A Granted FR2221517A1 (en) | 1973-03-14 | 1973-03-14 | Recovery of rieamycin from broths - by oxidn to an insol form |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE796018A (en) |
FR (1) | FR2221517A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1181228B (en) * | 1959-08-07 | 1964-11-12 | Lepetit Spa | Process for the preparation of rifamycin O and its monoacetyl derivative |
-
1973
- 1973-02-27 BE BE128149A patent/BE796018A/en unknown
- 1973-03-14 FR FR7309816A patent/FR2221517A1/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1181228B (en) * | 1959-08-07 | 1964-11-12 | Lepetit Spa | Process for the preparation of rifamycin O and its monoacetyl derivative |
Also Published As
Publication number | Publication date |
---|---|
FR2221517B1 (en) | 1977-08-05 |
BE796018A (en) | 1973-06-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |