CN1199969C - 新方法 - Google Patents
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- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 2
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- 229910052703 rhodium Inorganic materials 0.000 claims description 2
- 239000010948 rhodium Substances 0.000 claims description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 2
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- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical compound C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 abstract description 6
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- MJICWWOZPCLNBP-LJQANCHMSA-N 5-[2-(benzenesulfonyl)ethenyl]-3-[[(2r)-1-methylpyrrolidin-2-yl]methyl]-1h-indole Chemical class CN1CCC[C@@H]1CC(C1=C2)=CNC1=CC=C2C=CS(=O)(=O)C1=CC=CC=C1 MJICWWOZPCLNBP-LJQANCHMSA-N 0.000 description 1
- VXWVFZFZYXOBTA-UHFFFAOYSA-N 5-bromo-1h-indole Chemical class BrC1=CC=C2NC=CC2=C1 VXWVFZFZYXOBTA-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
- C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
- C07D403/06—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
- A61K31/403—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil condensed with carbocyclic rings, e.g. carbazole
- A61K31/404—Indoles, e.g. pindolol
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/06—Antimigraine agents
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Abstract
本发明涉及制备抗偏头痛药物,商业上以氢溴酸盐形式获得的(R)-5-(2-苯磺酰基乙基)-3-N-甲基吡咯烷-2-基甲基)-1H-吲哚(依拉曲坦)的改进方法,和由此得到的中间体和无二聚物的产物。
Description
本发明涉及制备抗偏头痛药物,商业上以如下氢溴酸盐形式获得的(R)-5-(2-苯磺酰基乙基)-3-N-甲基吡咯烷-2-基甲基)-1H-吲哚(依拉曲坦)的改进方法:
和由此得到的中间体和无二聚物的产物。
欧洲专利0592438描述了通过催化还原(R)-5-(2-苯磺酰基乙烯基)-3-(N-甲基吡咯烷-2-基甲基)-1H-吲哚制备依拉曲坦的方法,上述化合物通过如下方法制备:(i)使N-苄氧羰基-D-脯氨酰氯与5-溴代吲哚在格利雅试剂存在下反应;(ii)还原得到的(R)-3-(N-苄氧羰基吡咯烷-2-基羰基)-5-溴-1H-吲哚得到(R)-5-溴-3-(N-甲基吡咯烷-2-基甲基)-1H-吲哚和(iii)使其与苯基乙烯基砜在钯催化剂,三芳基膦和碱存在下反应。
完整的方案可表示如下:
当按如下方案以合理的收率制备式(I)的依拉曲坦时,人们发现(R)-5-(2-苯磺酰基乙烯基)-3-(N-甲基吡咯烷-2-基甲基)-1H-吲哚前体在尝试以不纯形式重结晶和/或在催化还原之前干燥时有二聚的倾向:
该二聚杂质的形成不仅降低了依拉曲坦的收率,而且可能更重要的是,它需要昂贵和耗时地除去所述二聚物以提供满足管理部门批准所需的严格标准的足够纯度的氢溴酸盐。
由于该困难,我们现在开发了另一种依拉曲坦的合成途径,它避免了使用有二聚倾向的前体。具体地说,本发明的方法包括通过水解(R)-1-乙酰基-5-(2-苯磺酰基乙基)-3-(N-甲基吡咯烷-2-基甲基)-1H-吲哚制备依拉曲坦,所述化合物可方便地通过如下方法制备:(i)N-乙酰基化(R)-5-溴-3-(N-甲基吡咯烷-2-基甲基)-1H-吲哚;(ii)使得到的(R)-1-乙酰基-5-溴-3-(N-甲基吡咯烷-2-基甲基)-1H-吲哚与苯基乙烯基砜在钯催化剂,三芳基膦和碱存在下反应以得到(R)-1-乙酰基-5-(2-苯磺酰基乙烯基)-3-(N-甲基吡咯烷-2-基甲基)-1H-吲哚和(iii)催化还原该化合物。
完整的方案表示如下:
通过使用该方法,可以避免形成不需要的二聚物,从而以良好收率得到高纯度依拉曲坦,无需随后的除去二聚物杂质所需的所需的昂贵和耗时的提纯步骤。
因此,根据本发明,其提供制备式(I)化合物的方法,其包括式(II)化合物的水解,通常在碱性条件下,更具体地为在甲醇/水中的碳酸钾。
根据本发明的另一方面,用于本方法的式(II)化合物可通过催化还原式(III)化合物得到,通常在合适催化剂存在下使用氢气或氢气源。还原通常使用氢气在1-15大气压的压力下进行,或使用氢气源,例如甲酸铵或甲酸进行。合适的催化剂包括钯/炭,例如5%w/w Pd/C、阮内镍、氧化铂、铑或钌。还原方便地在酸存在下进行,所述酸例如甲磺酸、乙酸或三氟乙酸。所得到的式(II)化合物在水解成式(I)化合物之前方便地用冷含水四氢呋喃制成浆状物。
本发明具体地提供了上述式(II)化合物,它至今未被描述。
根据本发明的另一方面,按照US专利5607951的实施例57所述的方法,用于本发明方法的式(III)化合物可通过在钯催化剂,三芳基膦和碱存在下用苯基乙烯基砜处理式(IV)化合物得到。
本发明的另一方面,同样按照US专利5607951的实施例57所述的方法,用于本发明方法的式(IV)化合物可通过N-乙酰基化(R)-5-溴-3-(N-甲基吡咯烷-2-基甲基)-1H-吲哚得到。
由本发明方法得到的依拉曲坦可通过用合适的酸处理转化为可药用的酸加成盐,所述转化可方便地就地进行,无需分离式(I)化合物。尤其优选的盐是通过用氢溴酸处理得到的氢溴酸盐。
因此,根据本发明,它还提供无二聚物的依拉曲坦和其可药用的盐,尤其是氢溴酸盐,和含有它们的药物组合物。
实施例
本发明的方法可通过如下制备(R)-5-(2-苯磺酰基乙基)-3-N-甲基吡咯烷-2-基甲基)-1H-吲哚(I)和其氢溴酸盐的实施例说明:
(a)制备(R)-1-乙酰基-5-(2-苯磺酰基乙基)-3-(N-甲基吡咯烷-2-基甲
基)-1H-吲哚(II)
向通过上述US5607951的实施例57中描述的方法制备的式(III)化合物(200g)在丙酮(2.0L)中的溶液中添加水(0.5L),滴加甲磺酸(43.2g,0.95当量),得到的溶液搅拌5分钟,然后加入5%w/w Pd/C催化剂(89.0g,JohnsonMattey Type 58,50%水分)。溶液在室温下在200psi氢气下氢化18小时。
过滤除去催化剂,滤液经汽提得到无丙酮浆状物。向其中滴加40%NaOH水溶液(300ml)和然后加水(1.5L)。得到的浆状物搅拌20分钟,再加入40%NaOH水溶液(20ml)。在剧烈搅拌下造粒2小时后,过滤悬浮液,抽吸干燥30分钟得到米色湿固体,其可以:
(i)在45℃下干燥以得到所需产物(193.0g,收率95%)或
(ii)溶解在四氢呋喃(1.6L)中,在10分钟内向其中加水(总共1.5L)。得到的悬浮液剧烈搅拌18小时,过滤并抽吸干燥30分钟,得到所需产物,米色湿固体(校准重量129.0g,收率67%)。
每种形式产物可直接用于步骤(b)。
(b)
制备(R)-5-(2-苯磺酰基乙基)-3-N-甲基吡咯烷-2-基甲基)-1H-吲哚(I)
向来自步骤(a)(i)或(ii)的式(II)化合物(95.9g)在丙酮(1L)和甲醇(0.1L)中的溶液中加入K2CO3(46.8g,1.5当量),得到的混合物搅拌24小时。向其中加入炭(50g),1小时后,加入无水MgSO4(300g)。得到的悬浮液搅拌1小时并过滤。汽提滤液得到湿固体,其在45℃下真空干燥得到所需产物(79.3g,91.8%)。
在式(I)化合物转化为可药用的酸加成盐情况下,可通过用合适的酸,例如氢溴酸水解直接处理得到的溶液以得到氢溴酸盐而避免式(I)化合物的分离。
(c)
制备(R)-5-(2-苯磺酰基乙基)-3-N-甲基吡咯烷-2-基甲基)-1H-吲哚(I) 和就地氢溴酸化
向来自步骤(a)(i)或(ii)的式(II)化合物(95.9g)在丙酮(1L)和甲醇(0.1L)中的溶液中加入K2CO3(46.8g,1.5当量),得到的混合物搅拌24小时。向其中加入炭(50g),1小时后,加入无水MgSO4(300g)。得到的悬浮液搅拌1小时并过滤。
滤液通过共沸蒸馏部分浓缩以除去甲醇并用丙酮调整体积到0.45L。滴加48%w/v HBr(33.2g,0.95当量)的丙酮(50ml)溶液,得到的悬浮液搅拌72小时。过滤,抽吸干燥30分钟,在45℃下真空干燥得到所需产物,为浅米色结晶(71.8g,68.5%)。
在本发明的优选实施方案中,某些步骤可‘缩短’以减少操作和加快加工时间。例如,在所述步骤(a)(ii)中通过使用在含水四氢呋喃中成浆的湿物质,可避免在水解之前干燥式(II)化合物。同样,在所述步骤(c)中,通过就地形成盐可避免在转化为盐之前分离式(I)化合物。
Claims (18)
2、权利要求1的方法,在碱性条件下进行。
3、权利要求2的方法,其中所述水解使用在甲醇/水中的碳酸钾进行。
4、权利要求1-3的任何一项的方法,其中式(II)化合物通过催化还原式(III)化合物得到:
5、权利要求4的方法,其中所述还原在合适催化剂存在下使用氢气或氢气源进行。
6、权利要求5的方法,其中所述还原在1-15大气压下使用氢气进行。
7、权利要求5的方法,其中所述还原使用氢气源进行,所述氢气源是甲酸铵或甲酸。
8、权利要求4-7的任何一项的方法,其中所述催化剂是钯/炭、阮内镍、氧化铂、铑或钌。
9、权利要求8的方法,其中所述催化剂是5%w/w钯/炭。
10、权利要求4-9的任何一项的方法,其中催化还原在酸存在下进行。
11、权利要求10的方法,其中所述酸是甲磺酸、乙酸或三氟乙酸。
12、权利要求4-11的任何一项的方法,其中通过催化还原得到的式(II)化合物在水解成式(I)化合物之前用冷含水四氢呋喃制成浆状物。
13、权利要求4-12的任何一项的方法,其中式(III)化合物通过在钯催化剂、三芳基膦和碱存在下用苯基乙烯基砜处理如下式(IV)化合物得到:
14、权利要求13的方法,其中式(IV)化合物通过N-乙酰基化(R)-5-溴-3-(N-甲基吡咯烷-2-基甲基)-1H-吲哚得到。
15、权利要求1-14的任何一项的方法,其中所得到的式(I)化合物通过用合适的酸处理转化为可药用的酸加成盐。
16、权利要求15的方法,其中所述转化过程就地进行,无需分离式(I)化合物。
17、权利要求15或16的方法,其中酸是氢溴酸,得到的盐是氢溴酸盐。
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GBGB0031094.6A GB0031094D0 (en) | 2000-12-20 | 2000-12-20 | New Process |
GB0031094.6 | 2000-12-20 |
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CN1199969C true CN1199969C (zh) | 2005-05-04 |
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JP (1) | JP2004516290A (zh) |
KR (1) | KR20030061448A (zh) |
CN (1) | CN1199969C (zh) |
AR (2) | AR035406A1 (zh) |
AT (1) | ATE308539T1 (zh) |
AU (1) | AU2002218440A1 (zh) |
BR (1) | BR0116324A (zh) |
CA (1) | CA2432138C (zh) |
CZ (1) | CZ20031640A3 (zh) |
DE (1) | DE60114668T2 (zh) |
ES (1) | ES2249386T3 (zh) |
GB (1) | GB0031094D0 (zh) |
HU (1) | HUP0302465A2 (zh) |
IL (1) | IL155706A0 (zh) |
MX (1) | MXPA03005569A (zh) |
PL (1) | PL362716A1 (zh) |
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US6927296B2 (en) | 2003-07-23 | 2005-08-09 | Pfizer Inc. | Process |
EP2046777A2 (en) * | 2007-05-01 | 2009-04-15 | Plus Chemicals B.V. | Amorphous eletriptan hydrobromide and process for preparing it and other forms of eletriptan hydrobromide |
IT1393700B1 (it) | 2009-04-22 | 2012-05-08 | F S I Fabbrica Italiana Sint | Sintesi di 3-{[(2r)-1-metilpirrolidin-2-il]metil}-5-[2-(fenilsulfonil)etil]-1h-indolo |
WO2011024039A1 (en) * | 2009-08-25 | 2011-03-03 | Ramesh Babu Potluri | Synthesis of novel 5-(2-(phenylsulfonyl)ethyl)-1h-indole derivatives |
WO2011089614A1 (en) | 2010-01-19 | 2011-07-28 | Sms Pharmaceuticals Limited | PROCESS FOR PREPARING ELETRIPTAN HYDROBROMIDE HAVING α-FORM |
WO2012004811A1 (en) * | 2010-07-06 | 2012-01-12 | Ind-Swift Laboratories Limited | Process for the preparation of 5-substsituted indole derivative |
JP2019502761A (ja) | 2016-01-21 | 2019-01-31 | ラボラトリオス レヴィ エセエレ | ((r)−3−[(−1−メチルピロリジン−2−イル)メチル]−5−(2−フェニルスルホニルエチル)−1h−インドールを作製する方法 |
CN112440631B (zh) * | 2020-11-02 | 2022-09-13 | 长城汽车股份有限公司 | 一种调节胎压装置、方法、系统以及车辆 |
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ZA200303446B (en) | 2004-07-05 |
CA2432138C (en) | 2007-05-08 |
ES2249386T3 (es) | 2006-04-01 |
CA2432138A1 (en) | 2002-06-27 |
PL362716A1 (en) | 2004-11-02 |
ATE308539T1 (de) | 2005-11-15 |
CZ20031640A3 (cs) | 2004-08-18 |
RU2256660C2 (ru) | 2005-07-20 |
EP1373254B1 (en) | 2005-11-02 |
WO2002050063A1 (en) | 2002-06-27 |
BR0116324A (pt) | 2003-10-14 |
HUP0302465A2 (hu) | 2003-12-29 |
CN1487932A (zh) | 2004-04-07 |
AR043016A2 (es) | 2005-07-13 |
EP1373254A1 (en) | 2004-01-02 |
DE60114668T2 (de) | 2006-07-20 |
MXPA03005569A (es) | 2003-10-06 |
KR20030061448A (ko) | 2003-07-18 |
JP2004516290A (ja) | 2004-06-03 |
GB0031094D0 (en) | 2001-01-31 |
AU2002218440A1 (en) | 2002-07-01 |
DE60114668D1 (de) | 2005-12-08 |
AR035406A1 (es) | 2004-05-26 |
IL155706A0 (en) | 2004-02-19 |
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