WO2016000230A1 - 一种达比加群酯中间体的制备方法及中间体化合物 - Google Patents
一种达比加群酯中间体的制备方法及中间体化合物 Download PDFInfo
- Publication number
- WO2016000230A1 WO2016000230A1 PCT/CN2014/081539 CN2014081539W WO2016000230A1 WO 2016000230 A1 WO2016000230 A1 WO 2016000230A1 CN 2014081539 W CN2014081539 W CN 2014081539W WO 2016000230 A1 WO2016000230 A1 WO 2016000230A1
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- WO
- WIPO (PCT)
- Prior art keywords
- compound
- organic solvent
- methylamine
- reaction
- preparation
- Prior art date
Links
- KSGXQBZTULBEEQ-UHFFFAOYSA-N CCCCCCOC(/N=C(\c(cc1)ccc1NCc1nc2cc(C(N(CCC(OCC)=O)c3ncccc3)=O)ccc2[n]1C)/N)=O Chemical compound CCCCCCOC(/N=C(\c(cc1)ccc1NCc1nc2cc(C(N(CCC(OCC)=O)c3ncccc3)=O)ccc2[n]1C)/N)=O KSGXQBZTULBEEQ-UHFFFAOYSA-N 0.000 description 1
- IWLGXPWQZDOMSB-UHFFFAOYSA-N [O-][N+](c(cc(cc1)C(Cl)=O)c1Cl)=O Chemical compound [O-][N+](c(cc(cc1)C(Cl)=O)c1Cl)=O IWLGXPWQZDOMSB-UHFFFAOYSA-N 0.000 description 1
- DFXQXFGFOLXAPO-UHFFFAOYSA-N [O-][N+](c(cc(cc1)C(O)=O)c1Cl)=O Chemical compound [O-][N+](c(cc(cc1)C(O)=O)c1Cl)=O DFXQXFGFOLXAPO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/72—Nitrogen atoms
- C07D213/75—Amino or imino radicals, acylated by carboxylic or carbonic acids, or by sulfur or nitrogen analogues thereof, e.g. carbamates
Definitions
- the invention relates to the field of drug synthesis, in particular to a preparation method of an dabigatran etexilate intermediate and an intermediate compound. Background technique
- Dabigatran Esterilate English name: Dabigatran Etexilate, Chemical name: 3-[[[2-[[4-[[[(hexyloxy)carbonyl]amino]iminomethyl]phenyl]amino]toluene] Small methyl-1H-benzimidazol-5-yl]carbonyl: pyridin-2-yl:)amino]propyl
- Dabigatran is a new oral anticoagulant developed by Boehringer lngelheim in Germany and is a non-peptide thrombin inhibitor.
- the drug was first marketed in Germany and the UK in April 2008 and was approved by the FDA in 2010.
- the drug has the advantages of being orally administered, requiring no clinical testing, and having less drug interactions.
- the technical problem solved by the invention is to provide a dabigatran etexilate in order to overcome the defects of high preparation of the dabigatran etexilate intermediate, more side reactions, not only low yield and difficulty in purification.
- the preparation method of the dabigatran group ester intermediate of the invention is simple, easy to operate, high in yield, easy to purify, and suitable for industrial production.
- the present invention provides a method for preparing dabigatran etexilate Intermediate 4, comprising the steps of: in an organic solvent, compound 3 with methylamine d ⁇ C 3 alkyl alcohol solution of the reaction can; the The organic solvent is a protic organic solvent or an aprotic organic solvent;
- X chlorine, bromine or iodine.
- the protic organic solvent is preferably methanol and/or ethanol, more preferably ethanol.
- the volumetric mass of the protic organic solvent and the compound 3 is preferably from 3 to 5 ml/g.
- the aprotic organic solvent is preferably an aprotic polar organic solvent, more preferably dimethyl sulfoxide, hydrazine, hydrazine-dimethylformamide, hydrazine, hydrazine-dimethylacetamide and hydrazine.
- One or more of methyl pyrrolidone One or more of methyl pyrrolidone.
- the volume of the aprotic organic solvent and the compound 3 is preferably 2.5 5.0 ml/g.
- X is preferably chlorine.
- the CrCg alkyl alcohol solution of methylamine is preferably one or more of a methanol solution of methylamine, an ethanol solution of methylamine and a solution of methylamine in propanol, more preferably methylamine. weak.
- the mass fraction of the C ⁇ Cs alkyl alcohol solution of the methylamine is preferably from 27 to 32%.
- the molar ratio of the compound 3 to the methylamine is preferably 1:1.98 1: 2.35.
- the methylamine d-C 3 alkyl alcohol solution is preferably added in a manner in which a C Cg alkyl alcohol solution of methylamine is added dropwise to a mixture of the compound 3 and an organic solvent.
- the reaction temperature is preferably The ground is 30 ⁇ 40 °C.
- the temperature of the reaction is preferably 60 to 90 ° C, more preferably 70 ° C.
- the progress of the reaction can be monitored by conventional means in the art (e.g., TLC or HPLC), generally as the end point of the reaction when Compound 3 disappears, and the reaction time is preferably 0.5 to 5 hours.
- post-treatment can be carried out to further purify the compound 4.
- the manner of the post-treatment may be a conventional post-treatment mode in the art, and preferably includes the following steps: when the organic solvent is a protic organic solvent, the reaction solution is evaporated to dryness, and the column chromatography is performed; When the organic solvent is an aprotic organic solvent, ethyl acetate is added, washed with water, dried and filtered, and the filtrate is evaporated to dryness.
- the ethyl acetate and the compound 3 preferably have a volume by mass of from 1 to 5 ml/g, and the drying is preferably dried with anhydrous sodium sulfate.
- the organic base is a common organic base which is capable of providing an alkaline environment for such a reaction in the art, and is preferably triethylamine and/or hydrazine, hydrazine-diisopropylethylamine.
- the molar ratio of the compound 2 to the ethyl 3-(pyridin-2-yl-amino)propionate is preferably 1:1.
- the temperature of the acylation reaction is a temperature which is a conventional acylation reaction in the art, preferably 0 to 30 °C.
- the volumetric mass of the dichloromethane and/or tetrahydrofuran and the compound 2 is preferably from 4 to 7 ml/g.
- the molar ratio of the organic base to the compound 2 is preferably from 1:1 to 2:1.
- the compound 2 is preferably added in a manner that a compound 2, and a mixture with dichloromethane and/or tetrahydrofuran are added to a mixture of ethyl 3-(pyridin-2-yl-amino)propionate and an organic base.
- the progress of the acylation reaction can be monitored by conventional means in the art (such as TLC or HPLC), generally as the end of the reaction when the disappearance of ethyl 3-(pyridin-2-yl-amino)propionate
- the reaction time described is preferably from 0.5 to 2 hours.
- post-treatment can be carried out to further purify the compound 3.
- the manner of the post-treatment may be a conventional post-treatment mode in the art, and preferably includes the following steps: the reaction liquid is washed with water, dried and filtered, and the filtrate is evaporated to dryness, and the column chromatography is carried out.
- This compound 3 can be used to prepare dabigatran etexilate intermediate 4.
- the organic base can be a common organic substance capable of providing an alkaline environment for such reactions in the field.
- the base is preferably triethylamine and/or hydrazine, hydrazine-diisopropylethylamine.
- the molar ratio of the compound 2 to the ethyl 3-(pyridin-2-yl-amino)propionate is preferably 1:1.
- the temperature of the acylation reaction is a temperature which is a conventional acylation reaction in the art, preferably 0 to 30 °C.
- the volumetric mass of the dichloromethane and/or tetrahydrofuran and the compound 2 is preferably from 4 to 7 ml/g.
- the molar ratio of the organic base to the compound 2 is preferably 1: 1 to 2:1.
- the compound 2 is preferably added in a manner that a compound 2, and a mixture with dichloromethane and/or tetrahydrofuran are added to a mixture of ethyl 3-(pyridin-2-yl-amino)propionate and an organic base. ; and more preferably 2 to the compound, and a mixture of dichloromethane and / or tetrahydrofuran is added dropwise 3 _ (pyridin-2-yl - amino) propionate and a mixture of an organic base.
- the progress of the acylation reaction can be monitored by conventional means in the art (such as TLC or HPLC), generally as the end of the reaction when the disappearance of ethyl 3-(pyridin-2-yl-amino)propionate
- the reaction time described is preferably from 0.5 to 2 hours.
- post-treatment can be carried out to further purify the compound 3.
- the manner of the post-treatment may be a conventional post-treatment mode in the art, and preferably includes the following steps: the reaction liquid is washed with water, dried and filtered, and the filtrate is evaporated to dryness, and the column chromatography is carried out.
- ⁇ chlorine, Bromine or iodine.
- the reagents and starting materials used in the present invention are commercially available.
- the positive progress of the present invention is as follows:
- the preparation method of the dabigatran etexilate intermediate of the invention is simple, easy to operate, high in yield, easy to purify, and suitable for industrial production. detailed description
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
Abstract
Description
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017501166A JP6403865B2 (ja) | 2014-07-03 | 2014-07-03 | ダビガトランエテキシラート中間体の製造方法及び中間体化合物 |
US15/323,709 US10112901B2 (en) | 2014-07-03 | 2014-07-03 | Method for preparing dabigatran etexilate intermediate, and intermediate compound |
PCT/CN2014/081539 WO2016000230A1 (zh) | 2014-07-03 | 2014-07-03 | 一种达比加群酯中间体的制备方法及中间体化合物 |
EP14896440.6A EP3165521B1 (en) | 2014-07-03 | 2014-07-03 | Method of preparing dabigatran etexilate intermediate and intermediate compound |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2014/081539 WO2016000230A1 (zh) | 2014-07-03 | 2014-07-03 | 一种达比加群酯中间体的制备方法及中间体化合物 |
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WO2016000230A1 true WO2016000230A1 (zh) | 2016-01-07 |
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PCT/CN2014/081539 WO2016000230A1 (zh) | 2014-07-03 | 2014-07-03 | 一种达比加群酯中间体的制备方法及中间体化合物 |
Country Status (4)
Country | Link |
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US (1) | US10112901B2 (zh) |
EP (1) | EP3165521B1 (zh) |
JP (1) | JP6403865B2 (zh) |
WO (1) | WO2016000230A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107328881A (zh) * | 2017-08-24 | 2017-11-07 | 利民化工股份有限公司 | 一种吡唑醚菌酯中间体溴化物监控的分析方法 |
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WO2007091950A1 (en) * | 2006-02-07 | 2007-08-16 | Astrazeneca Ab | Benzimidazoles and imidazopyridines useful in the treatment of diseases or disorders associated with cannabinoid receptor 2 (cb2) such as pain |
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- 2014-07-03 EP EP14896440.6A patent/EP3165521B1/en active Active
- 2014-07-03 US US15/323,709 patent/US10112901B2/en active Active
- 2014-07-03 WO PCT/CN2014/081539 patent/WO2016000230A1/zh active Application Filing
- 2014-07-03 JP JP2017501166A patent/JP6403865B2/ja active Active
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CN107328881A (zh) * | 2017-08-24 | 2017-11-07 | 利民化工股份有限公司 | 一种吡唑醚菌酯中间体溴化物监控的分析方法 |
Also Published As
Publication number | Publication date |
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US20170190666A1 (en) | 2017-07-06 |
EP3165521B1 (en) | 2019-01-16 |
EP3165521A4 (en) | 2017-12-20 |
EP3165521A1 (en) | 2017-05-10 |
JP2017526639A (ja) | 2017-09-14 |
US10112901B2 (en) | 2018-10-30 |
JP6403865B2 (ja) | 2018-10-10 |
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