ES2479943T3 - Procedimiento de obtención de 17α-acetoxi-11β-(4-N,N-dimetilaminofenil)-19-norpregna-4,9-dien-3,20-diona - Google Patents
Procedimiento de obtención de 17α-acetoxi-11β-(4-N,N-dimetilaminofenil)-19-norpregna-4,9-dien-3,20-diona Download PDFInfo
- Publication number
- ES2479943T3 ES2479943T3 ES04703805.4T ES04703805T ES2479943T3 ES 2479943 T3 ES2479943 T3 ES 2479943T3 ES 04703805 T ES04703805 T ES 04703805T ES 2479943 T3 ES2479943 T3 ES 2479943T3
- Authority
- ES
- Spain
- Prior art keywords
- norpregna
- acetoxy
- dimethylaminophenyl
- dione
- dien
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 abstract 6
- 239000013078 crystal Substances 0.000 abstract 2
- 208000014311 Cushing syndrome Diseases 0.000 abstract 1
- 208000010412 Glaucoma Diseases 0.000 abstract 1
- 230000001911 anti-progestational effect Effects 0.000 abstract 1
- 239000003433 contraceptive agent Substances 0.000 abstract 1
- 230000002254 contraceptive effect Effects 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 238000004090 dissolution Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000003862 glucocorticoid Substances 0.000 abstract 1
- 201000009395 primary hyperaldosteronism Diseases 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 150000003431 steroids Chemical class 0.000 abstract 1
- 230000001225 therapeutic effect Effects 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 8
- -1 1,2-ethanedioxy Chemical group 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 150000002978 peroxides Chemical class 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical group ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 150000002576 ketones Chemical class 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 238000004809 thin layer chromatography Methods 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical class CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000007818 Grignard reagent Substances 0.000 description 1
- DOJXGHGHTWFZHK-UHFFFAOYSA-N Hexachloroacetone Chemical compound ClC(Cl)(Cl)C(=O)C(Cl)(Cl)Cl DOJXGHGHTWFZHK-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000004973 alkali metal peroxides Chemical class 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 229940061607 dibasic sodium phosphate Drugs 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical group [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 238000006735 epoxidation reaction Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 150000004795 grignard reagents Chemical class 0.000 description 1
- VBZWSGALLODQNC-UHFFFAOYSA-N hexafluoroacetone Chemical group FC(F)(F)C(=O)C(F)(F)F VBZWSGALLODQNC-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 150000007529 inorganic bases Chemical class 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000004965 peroxy acids Chemical class 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J41/00—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring
- C07J41/0033—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring not covered by C07J41/0005
- C07J41/0077—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring not covered by C07J41/0005 substituted in position 11-beta by a carbon atom, further substituted by a group comprising at least one further carbon atom
- C07J41/0083—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring not covered by C07J41/0005 substituted in position 11-beta by a carbon atom, further substituted by a group comprising at least one further carbon atom substituted in position 11-beta by an optionally substituted phenyl group not further condensed with other rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J41/00—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Steroid Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
El procedimiento comprende (a) la formación de cristales del isopropanol hemisolvato de 17a-acetoxi-11ß-(4-N,N-dimetilaminofenil)-19-norpregna-4,9-dien-3,20-diona (VA-2914) por disolución en isopropanol y posterior cristalización; (b) la separación de los cristales de isopropanol hemisolvato de VA-2914. El compuesto VA-2914 es un esteroide con actividad anti-progestacional y anti-glucocorticoidal, útil en indicaciones ginecologías terapéuticas y anticonceptivas y en el tratamiento del síndrome de Cushing y del glaucoma.
Description
es útil para la síntesis de VA-2914. El carbinol acetato puede obtenerse mediante un procedimiento como el mostrado en el siguiente Esquema de Reacción. imagen6 O imagen7 O OAc
OAc
O
Me2N O
OAc
O
O OH
5
Brevemente, la obtención de carbinol acetato comprende, en una primera etapa, epoxidar el doble enlace 5(10) presente en la 17α-acetoxi-3,3-(1,2-etanodioxi)-19-norpregna-5,(10),9(11)-dien-20-ona mediante reacción de dicho compuesto con un aducto formado por la reacción de una cetona halogenada y un peróxido, en presencia de una base y de un disolvente. Dicha cetona halogenada puede ser una acetona halogenada, por ejemplo, 10 hexafluoracetona o hexacloroacetona. Cualquier peróxido apropiado puede ser utilizado en esta reacción, por ejemplo, peróxido de hidrógeno, un peróxido de un metal alcalino, un peroxiácido, etc. Esta reacción de epoxidación se lleva a cabo en presencia de una base, preferentemente, una base inorgánica, tal como, por ejemplo, un fosfato, carbonato o bicarbonato de un metal alcalino y de un disolvente orgánico, preferentemente, un disolvente halogenado. En una realización particular, la cetona halogenada es hexafluoroacetona, el peróxido es peróxido de
15 hidrógeno, la base es fosfato sódico dibásico y el disolvente es diclorometano.
A continuación, el epóxido obtenido se hace reaccionar, en una segunda etapa, con un reactivo de Grignard, tal como bromuro de 4-N,N-dimetilaminofenilmagnesio en presencia de una sal de Cu(I) para obtener el carbinol acetato.
Los siguientes Ejemplos ilustran la invención y no deben ser considerados como limitativos de la misma.
20 Ejemplo 1
Obtención de 17α-acetoxi-11β-(4-N,N-dimetilaminofenil)-19-norpregna-4,9-dien-3,20-diona [VA-2914] cruda
Se cargaron 38,5 g de 3,3-(1,2-etanodioxi)-5α-hidroxi-11β-(4-N,N-dimetilaminofenil)-17α-acetoxi-19-norpregna-9-en20-ona [carbinol acetato] purificado, en un matraz en atmósfera de nitrógeno, a una temperatura comprendida entre 20 ºC y 22 ºC y se añadieron 385 ml de agua desionizada y 17,91 g de HKSO4. La suspensión obtenida se agitó
25 hasta solución total, durante 4 h aproximadamente. El final de la reacción se determinó mediante cromatografía en capa fina (TLC).
6
Claims (1)
-
imagen1
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200300162 | 2003-01-22 | ||
| ES200300162A ES2212912B1 (es) | 2003-01-22 | 2003-01-22 | Procedimiento para la obtencion de 17alfa-acetoxi-11beta-(4-n,n-dimetilaminofenil)-19-norpregna-4,9-dien-3,20-diona. |
| PCT/ES2004/000026 WO2004065405A1 (es) | 2003-01-22 | 2004-01-21 | PROCEDIMIENTO PARA LA OBTENCÍON DE 17α-ACETOXI-11β-(4-N,N-DIMETILAMINOFENIL)-19-NORPREGNA-4,9-DIEN-3,20-DIONA |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2479943T3 true ES2479943T3 (es) | 2014-07-25 |
Family
ID=32749097
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200300162A Expired - Fee Related ES2212912B1 (es) | 2003-01-22 | 2003-01-22 | Procedimiento para la obtencion de 17alfa-acetoxi-11beta-(4-n,n-dimetilaminofenil)-19-norpregna-4,9-dien-3,20-diona. |
| ES04703805.4T Expired - Lifetime ES2479943T3 (es) | 2003-01-22 | 2004-01-21 | Procedimiento de obtención de 17α-acetoxi-11β-(4-N,N-dimetilaminofenil)-19-norpregna-4,9-dien-3,20-diona |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200300162A Expired - Fee Related ES2212912B1 (es) | 2003-01-22 | 2003-01-22 | Procedimiento para la obtencion de 17alfa-acetoxi-11beta-(4-n,n-dimetilaminofenil)-19-norpregna-4,9-dien-3,20-diona. |
Country Status (11)
| Country | Link |
|---|---|
| EP (2) | EP2348033A3 (es) |
| JP (1) | JP2006515869A (es) |
| KR (1) | KR20050107400A (es) |
| CN (1) | CN100354300C (es) |
| CA (1) | CA2514169C (es) |
| CY (1) | CY1115343T1 (es) |
| DK (1) | DK1602662T3 (es) |
| ES (2) | ES2212912B1 (es) |
| PT (1) | PT1602662E (es) |
| SI (1) | SI1602662T1 (es) |
| WO (1) | WO2004065405A1 (es) |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6900193B1 (en) | 1996-05-01 | 2005-05-31 | The United States Of America As Represented By The Department Of Health And Human Services | Structural modification of 19-norprogesterone I: 17-α-substituted-11-β-substituted-4-aryl and 21-substituted 19-norpregnadienedione as new antiprogestational agents |
| ES2152671T3 (es) | 1996-05-01 | 2001-02-01 | Us Gov Health & Human Serv | Derivados de progesterona sustituidos en posicion 21 como nuevos agentes antiprogestacionales. |
| AU2004217988C1 (en) * | 2003-02-28 | 2010-06-03 | Southwest Foundation For Biomedical Research | Method for preparing 17 alpha-acetoxy-11beta-(4-N,N-dimethylaminophenyl)-19-norpregna-4,9-diene-3,20-dione, intermediates thereof, and methods for the preparation of such intermediates |
| CN100469786C (zh) * | 2005-06-20 | 2009-03-18 | 中国科学院理化技术研究所 | 合成16-脱氢孕甾双烯酮醇醋酸酯或同类物的方法 |
| EP2532350A1 (en) | 2007-10-17 | 2012-12-12 | Laboratoire HRA Pharma | Pharmaceutical combination of a glucocorticoid receptor antagonist and a cortisol synthesis inhibitor for treating cushing's syndrome |
| US8299050B2 (en) | 2008-01-29 | 2012-10-30 | Laboratoire Hra-Pharma | Method for treating uterine fibroids |
| US8512745B2 (en) | 2008-12-08 | 2013-08-20 | Laboratoire Hra Pharma | Ulipristal acetate tablets |
| WO2010119029A1 (en) | 2009-04-14 | 2010-10-21 | Laboratoire Hra-Pharma | Method for on-demand contraception |
| US8426392B2 (en) | 2009-12-09 | 2013-04-23 | Laboratoire Hra-Pharma | Method for providing emergency contraception |
| WO2011091890A1 (en) | 2010-02-01 | 2011-08-04 | Laboratoire Hra-Pharma | A method for post coital contraception in overweight for obese female subjects using ulipristal acetate |
| US20130045959A1 (en) | 2010-02-01 | 2013-02-21 | Andre Ulmann | Method for late post coital contraception using ulipristal acetate |
| CN102241722B (zh) * | 2010-05-12 | 2015-11-25 | 杭州容立医药科技有限公司 | 一种合成孕酮受体调节剂优力司特的纯化方法 |
| EP2471537A1 (en) | 2010-12-30 | 2012-07-04 | PregLem S.A. | Treatment of pain associated with dislocation of basal endometrium |
| EP2545922A1 (en) | 2011-07-12 | 2013-01-16 | PregLem S.A. | Treatment of excessive menstrual bleeding associated with uterine fibroids |
| CN102321141B (zh) * | 2011-07-22 | 2013-05-15 | 上海希迈医药科技有限公司 | 一种17α-乙酰氧基-11β-(4-N,N-二甲氨基苯基)-19-去甲孕甾-4,9-二烯-3,20-二酮的无定形物及其制备方法 |
| CN102344478B (zh) * | 2011-07-22 | 2013-08-07 | 上海希迈医药科技有限公司 | 一种17α-乙酰氧基-11β-(4-N,N-二甲氨基苯基)-19-去甲孕甾-4,9-二烯-3,20-二酮的结晶物及其制备方法 |
| CN103193850A (zh) * | 2012-01-04 | 2013-07-10 | 北京紫竹药业有限公司 | 甾体化合物的新晶型及其制备方法 |
| FR2987271B1 (fr) | 2012-02-28 | 2017-08-18 | Hra Pharma Lab | Combinaison de modulateurs selectifs du recepteur a la progesterone et d'anti-inflammatoires non steroidiens |
| EP2641602A1 (en) | 2012-03-23 | 2013-09-25 | PregLem S.A. | Method for treating gynecological diseases |
| CN103755765B (zh) * | 2012-04-17 | 2018-01-02 | 常州市第四制药厂有限公司 | 醋酸乌利司他的多晶型及其制备方法 |
| HUE037889T2 (hu) | 2012-05-25 | 2018-09-28 | Hra Pharma Lab | Ulipristal acetát melltumorok megelõzésére és kezelésére |
| CN102887931B (zh) * | 2012-07-07 | 2015-04-15 | 山东诚创医药技术开发有限公司 | 一种醋酸乌利司他的结晶体及其制备方法 |
| JP6200493B2 (ja) | 2012-09-28 | 2017-09-20 | あすか製薬株式会社 | 無定形ウリプリスタール酢酸エステル |
| JP6474722B2 (ja) * | 2012-09-28 | 2019-02-27 | あすか製薬株式会社 | ウリプリスタール酢酸エステルの結晶多形 |
| WO2014050107A1 (en) * | 2012-09-28 | 2014-04-03 | Aska Pharmaceutical Co., Ltd. | Crystalline polymorphic form of ulipristal acetate |
| FR2997628B1 (fr) * | 2012-11-08 | 2015-01-16 | Hra Pharma Lab | Produit de co-micronisation comprenant un modulateur selectif des recepteurs a la progesterone |
| FR2997627B1 (fr) * | 2012-11-08 | 2015-01-16 | Hra Pharma Lab | Produit de co-micronisation comprenant de l'ulipristal acetate |
| FR2999081B1 (fr) | 2012-12-06 | 2015-02-27 | Hra Pharma Lab | Dispersion solide d'un modulateur selectif du recepteur a la progesterone |
| KR20150139919A (ko) | 2013-04-10 | 2015-12-14 | 쁘레글렘 에스아 | 자궁 섬유종의 치료에서 사용하기 위한 프로게스테론 수용체 조절제 |
| CN104418930B (zh) * | 2013-08-23 | 2018-01-12 | 四川海思科制药有限公司 | 一种高纯度醋酸乌利司他 |
| FR3060389B1 (fr) | 2016-12-20 | 2019-05-31 | Laboratoire Hra-Pharma | Comprime enrobe comprenant de l'ulipristal acetate ou un de ses metabolites |
| CN110028543B (zh) * | 2018-01-11 | 2024-04-12 | 上海汇伦医药股份有限公司 | 一种醋酸优力司特的制备方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4954490A (en) * | 1988-06-23 | 1990-09-04 | Research Triangle Institute | 11 β-substituted progesterone analogs |
| US5929262A (en) | 1995-03-30 | 1999-07-27 | The United States Of America As Represented By The Department Of Health And Human Services | Method for preparing 17α-acetoxy-11β-(4-N, N-dimethylaminophyl)-19-Norpregna-4,9-diene-3, 20-dione, intermediates useful in the method, and methods for the preparation of such intermediates |
| DE19747914A1 (de) * | 1997-10-30 | 1999-05-06 | Stihl Maschf Andreas | Abgasschalldämpfer |
| US6020328A (en) * | 1998-03-06 | 2000-02-01 | Research Triangle Institute | 20-keto-11β-arylsteroids and their derivatives having agonist or antagonist hormonal properties |
| AU775831B2 (en) * | 1999-12-29 | 2004-08-19 | Government Of The United States Of America, As Represented By The Secretary Of The Department Of Health And Human Services, The | Process for preparing 17alpha-acetoxy-11beta-(4-N,N-(dimethylamino)phenyl)-21- methoxy-19-norpregna-4,9-diene-3,20-dione, intermediates useful in the process, and processes for preparing such intermediates |
| ATE396197T1 (de) * | 2000-03-17 | 2008-06-15 | Us Gov Health & Human Serv | 17-alpha-substituierte-11-beta-substituierte-4- aryl und 21-substituierte 19-norpregnadienedione mit antigestagener aktivität |
| AU2004217988C1 (en) * | 2003-02-28 | 2010-06-03 | Southwest Foundation For Biomedical Research | Method for preparing 17 alpha-acetoxy-11beta-(4-N,N-dimethylaminophenyl)-19-norpregna-4,9-diene-3,20-dione, intermediates thereof, and methods for the preparation of such intermediates |
-
2003
- 2003-01-22 ES ES200300162A patent/ES2212912B1/es not_active Expired - Fee Related
-
2004
- 2004-01-21 EP EP10165052.1A patent/EP2348033A3/en not_active Withdrawn
- 2004-01-21 JP JP2006500145A patent/JP2006515869A/ja active Pending
- 2004-01-21 CA CA2514169A patent/CA2514169C/en not_active Expired - Lifetime
- 2004-01-21 KR KR1020057013651A patent/KR20050107400A/ko not_active Ceased
- 2004-01-21 EP EP04703805.4A patent/EP1602662B1/en not_active Expired - Lifetime
- 2004-01-21 DK DK04703805.4T patent/DK1602662T3/da active
- 2004-01-21 PT PT47038054T patent/PT1602662E/pt unknown
- 2004-01-21 CN CNB2004800042263A patent/CN100354300C/zh not_active Expired - Lifetime
- 2004-01-21 SI SI200432173T patent/SI1602662T1/sl unknown
- 2004-01-21 WO PCT/ES2004/000026 patent/WO2004065405A1/es not_active Ceased
- 2004-01-21 ES ES04703805.4T patent/ES2479943T3/es not_active Expired - Lifetime
-
2014
- 2014-07-18 CY CY20141100543T patent/CY1115343T1/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| KR20050107400A (ko) | 2005-11-11 |
| EP2348033A3 (en) | 2013-05-22 |
| JP2006515869A (ja) | 2006-06-08 |
| CA2514169C (en) | 2013-10-08 |
| PT1602662E (pt) | 2014-06-25 |
| ES2212912B1 (es) | 2005-10-01 |
| EP1602662A1 (en) | 2005-12-07 |
| WO2004065405A1 (es) | 2004-08-05 |
| ES2212912A1 (es) | 2004-08-01 |
| CN1753905A (zh) | 2006-03-29 |
| CY1115343T1 (el) | 2017-01-04 |
| EP1602662B1 (en) | 2014-04-23 |
| CA2514169A1 (en) | 2004-08-05 |
| DK1602662T3 (da) | 2014-07-07 |
| CN100354300C (zh) | 2007-12-12 |
| SI1602662T1 (sl) | 2014-08-29 |
| EP2348033A2 (en) | 2011-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2218328T3 (es) | Derivados de epotilones, su preparacion y utilizacion. | |
| US20100063272A1 (en) | Method for producing steroid compound | |
| HU181489B (en) | Epoxidizing method | |
| ES2282225T3 (es) | Proceso para la prepacion de (e,z) 3-(2-aminoetoxiimino)-androstane-6,17-diona y sus analogos. | |
| TWI292402B (en) | Penicillin crystal and manufacturing method thereof | |
| ES2266725T3 (es) | Conversion de 9-dihidro-13-acetilbacatina iii en 10-deacetilbacatina iii. | |
| US9676814B2 (en) | Industrial process for the synthesis of ulipristal acetate and its 4′-acetyl analogue | |
| US2667498A (en) | Selective dehalogenation of certain halogenated ketones | |
| JPS62178578A (ja) | オキシラニルカルボン酸エステルの製法 | |
| JPS61106598A (ja) | 24,25−ジヒドロキシ−6−置換−3α,5−シクロ−5α−コレスタン誘導体 | |
| EP0015122A1 (en) | New 25-hydroxy-24-oxocholestane derivatives and preparation thereof | |
| CN115626947B (zh) | 五环三萜类天然产物的合成及其应用 | |
| Chan et al. | Triterpenoids from Entandrophragma cylindricum Sprague. Part II. The structures of sapelins C, D, E, and F | |
| US4376733A (en) | Preparation of oxacycloalkenones | |
| ES2461092T3 (es) | Procedimiento para preparar el inhibidor de aromatasa Exemestano | |
| JPH0324053A (ja) | 付加物―アルデヒドおよびビタミン―d化合物の調製のためのその使用 | |
| CA1314872C (en) | Fluorine derivatives of vitamin d _and process for producing the same | |
| ES2222937T3 (es) | Procedimiento para preparar 24(s)-hidroxivitamina d2. | |
| CN109134577B (zh) | 一种3α-羟基-5α-胆烷酸的合成方法 | |
| ES2668461T3 (es) | Un procedimiento para la producción de 19-norpregn-4-en-3,20-diona-17?-ol (gestonorona) y productos intermedios correspondientes | |
| PT86665B (pt) | Processo para a preparacao de lanosterois substituidos nas posicoes 14 e 15 e de composicoes hipocolesterolemicas que os contem | |
| US6812358B2 (en) | Process for making estra-4,9(10)-diene steroids | |
| JP2002234897A (ja) | ビタミンdおよびステロイド誘導体の合成用中間体およびその製造方法 | |
| JP3216268B2 (ja) | エポキシドの製法 | |
| US3647831A (en) | Processes for preparing equilenin compounds |