BR0116919A - Processo para purificação de ácido de varfarina, sais de metais alcalinos de varfarina e clatratos correspondentes - Google Patents
Processo para purificação de ácido de varfarina, sais de metais alcalinos de varfarina e clatratos correspondentesInfo
- Publication number
- BR0116919A BR0116919A BR0116919-0A BR0116919A BR0116919A BR 0116919 A BR0116919 A BR 0116919A BR 0116919 A BR0116919 A BR 0116919A BR 0116919 A BR0116919 A BR 0116919A
- Authority
- BR
- Brazil
- Prior art keywords
- acid
- warfarin
- purifying
- varpharine
- solution
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
- C07D311/42—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4
- C07D311/44—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4 with one hydrogen atom in position 3
- C07D311/46—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4 with one hydrogen atom in position 3 unsubstituted in the carbocyclic ring
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Plural Heterocyclic Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
"PROCESSO PARA PURIFICAçãO DE áCIDO DE VARFARINA, SAIS DE METAIS ALCALINOS DE VARFARINA E CLATRATOS CORRESPONDENTES". A invenção refere-se a um procedimento aperfeiçoado para a purificação de ácido de varfarina. Sais de varfarina sódio, potássio e lítio e os clatratos correspondentes são preparados em alta, pureza de grau de farmacopéia e bons rendimentos a partir do ácido de varfarina puro e as respectivas bases de sais de metais em meio adequado. O processo para preparar ácido de varfarina puro a partir do ácido de varfarina bruto inicia suspendendo o ácido bruto em um solvente imiscível em água, extraindo o ácido em uma solução aquosa de base diluída, separando a fase aquosa resultante e diluindo-a com um álcool de alquila inferior. A solução aquosa é filtrada antes de ser diluída com o álcool de alquila inferior. A solução é acidificada a um pH de aproximadamente 2 a 5 usando um ácido adequado, tal como ácido clorídrico, sulfúrico ou fosfórico. A suspensão resultante é agitada a uma temperatura de aproximadamente 20<198>C a cerca de 60<198>C, esfriando a suspensão abaixo da temperatura ambiente, filtrando o ácido de varfarina puro e secando.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US27173701P | 2001-02-28 | 2001-02-28 | |
| PCT/US2001/050438 WO2002070503A1 (en) | 2001-02-28 | 2001-12-28 | Process for purification of warfarin acid, warfarin alkali metal salts and corresponding clathrates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR0116919A true BR0116919A (pt) | 2004-10-13 |
Family
ID=23036855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR0116919-0A BR0116919A (pt) | 2001-02-28 | 2001-12-28 | Processo para purificação de ácido de varfarina, sais de metais alcalinos de varfarina e clatratos correspondentes |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1363893A1 (pt) |
| CN (1) | CN1505620A (pt) |
| BR (1) | BR0116919A (pt) |
| CA (1) | CA2439488A1 (pt) |
| IL (1) | IL157555A0 (pt) |
| MX (1) | MXPA03007769A (pt) |
| RU (1) | RU2003129000A (pt) |
| WO (1) | WO2002070503A1 (pt) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IN2012CN10302A (pt) * | 2010-05-20 | 2015-06-12 | Apotex Pharmachem Inc | |
| WO2011145007A1 (en) | 2010-05-20 | 2011-11-24 | Alembic Pharmaceuticals Limited | A process for the preparation of amorphous warfarin sodium |
| CN109369450B (zh) * | 2018-10-31 | 2021-07-27 | 江苏省农用激素工程技术研究中心有限公司 | 三甲苯草酮的精制方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2777859A (en) * | 1953-02-05 | 1957-01-15 | Wisconsin Alumni Res Found | Warfarin-alkali metal derivatives and processes of preparing the same |
| US2765321A (en) * | 1955-05-27 | 1956-10-02 | Wisconsin Alumni Res Found | Process of making crystalline warfarin sodium |
| FR1397213A (fr) * | 1963-05-14 | 1965-04-30 | Frosst & Co Charles E | Nouveau procédé de préparation de la warfarine-sodium |
| US4113744A (en) * | 1974-08-13 | 1978-09-12 | Nasri W. Badran | Microcrystalline 3-(alpha-acetonylbenzyl)-4-hydroxycoumarin (warfarin) and methods of making |
| US4826689A (en) * | 1984-05-21 | 1989-05-02 | University Of Rochester | Method for making uniformly sized particles from water-insoluble organic compounds |
| US5696274A (en) * | 1995-12-28 | 1997-12-09 | Hoechst Celanese Corporation | Syntheses based on 2-hydroxyacetophenone |
-
2001
- 2001-12-28 RU RU2003129000/04A patent/RU2003129000A/ru unknown
- 2001-12-28 BR BR0116919-0A patent/BR0116919A/pt not_active IP Right Cessation
- 2001-12-28 WO PCT/US2001/050438 patent/WO2002070503A1/en not_active Application Discontinuation
- 2001-12-28 MX MXPA03007769A patent/MXPA03007769A/es unknown
- 2001-12-28 IL IL15755501A patent/IL157555A0/xx unknown
- 2001-12-28 CA CA002439488A patent/CA2439488A1/en not_active Abandoned
- 2001-12-28 EP EP01985145A patent/EP1363893A1/en not_active Withdrawn
- 2001-12-28 CN CNA018231594A patent/CN1505620A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| MXPA03007769A (es) | 2005-07-01 |
| CA2439488A1 (en) | 2002-09-12 |
| RU2003129000A (ru) | 2005-05-10 |
| IL157555A0 (en) | 2004-03-28 |
| WO2002070503A1 (en) | 2002-09-12 |
| CN1505620A (zh) | 2004-06-16 |
| EP1363893A1 (en) | 2003-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B25A | Requested transfer of rights approved |
Owner name: TARO PHARMACEUTICAL INDUSTRIES LTD. (IL) Free format text: TRANSFERIDO DE: TARO PHARMACEUTICALS U.S.A., INC. |
|
| B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 4A, 5A E 6A ANUIDADES. |
|
| B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 1964 DE 26/08/2008 E CONSIDERANDO A AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS. |