CN103588750B - Method for preparing ticagrelor intermediate - Google Patents

Method for preparing ticagrelor intermediate Download PDF

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CN103588750B
CN103588750B CN201310547549.8A CN201310547549A CN103588750B CN 103588750 B CN103588750 B CN 103588750B CN 201310547549 A CN201310547549 A CN 201310547549A CN 103588750 B CN103588750 B CN 103588750B
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CN103588750A (en
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许学农
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Market supervision and Administration Bureau of Babu District, Hezhou City
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Suzhou Miracpharma Technology Co Ltd
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D317/00Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
    • C07D317/08Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
    • C07D317/44Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems

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Abstract

The invention discloses a method for preparing a ticagrelor intermediate 2-[[(3aR, 4S, 6R, 6aS)-6-aminotetralin-2, 2-dimethyl-4H-cyclopenteno-1,3-dioxin-4-group]oxygroup] ethanol (intermediate C). The method comprises the following steps: using (1R, 2R, 3R.4R)-rel-1,2 and 3, 4 bicyclo oxacyclopentane (I) as raw materials and obtaining a target product sequentially through nitrine opening ring, aminolysis, ketone condensation, etherification, reduction, resolution and the like. The preparation method has the advantages of being easy to obtain raw materials and simple in process, can effectively control the production cost, increases the quality of products, and promotes economic and technological development of ticagrelor active pharmaceutical ingredients.

Description

The preparation method of ADZ6140 intermediate
Technical field
The invention belongs to organic synthetic route design and bulk drug thereof and intermediate preparing technical field, particularly a kind of ADZ6140 intermediate 2-[[(3aR, 4S, 6R, amino tetrahydrochysene-2 of 6aS)-6-, 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] preparation method of ethanol.
Background technology
ADZ6140 (Ticagrelor, also claim ticagrelor) Shi You Astrazeneca AB research and development a kind of novel, there is optionally small molecules anticoagulant, also be the oral P2Y12 adenosine diphosphate receptor antagonists of first reversible mating type, the platelet aggregation that ADP is caused has obvious restraining effect, can effectively improve acute coronary patient's symptom.This medicine went on the market by examining in European Union and the U.S. of drug administration of European Union (EMEA) and FDA (Food and Drug Adminstration) (FDA) respectively in 2010 and 2011, and its import preparation ticagrelor sheet has obtained CFDA approval and gone on the market in China.
Chemistry (1S, 2S, 3R, 5S)-3-[7-[(1R by name of ADZ6140,2S)-2-(3,4-difluorophenyl) cyclopropyl amino]-5-(the third sulfydryl)-3H-[1,2,3] triazole [4,5-d] pyrimidin-3-yl]-5-(2-hydroxyl-oxethyl) pentamethylene-1,2-glycol.
The existing a lot of reports of the preparation method of ADZ6140, as the patents such as WO2010030224, WO2011036479, CN1680340, WO2012138981, WO2012142983, CN101143864, CN102731467, CN102659815, CN102675321, CN103130726, CN103242171, CN103304535, CN103304545, CN103288836, CN103304567, CN103288837, CN103360396 by different synthetic design studies the preparation method of ADZ6140.After analyzing published synthetic route and preparation method, find, in known preparation method, mostly can relate to following three intermediate A, B and C.
The chemistry of the intermediate C of the present invention's research is by name: 2-[[(3aR, 4S, 6R, 6aS) amino tetrahydrochysene-2 of-6-, 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] ethanol, its synthetic route mainly contains following several:
Patent WO2011017108, WO9905142, CN102659815 etc. have reported take cyclopentadiene as raw material; by Diels-Alder, be reacted into ring, then obtain target intermediate C through steps such as peroxidation, ketal, reduction, amido protecting, esterification and reduction, deprotections.
Patent WO9905143, WO99828300, WO0034283, WO0136421, WO01092263, WO2010069408, WO2010022121 and WO2012063126 etc. have reported that a kind of to take chiral carbocyclic ring intermediate (V) be raw material, by steps such as the aminating reaction under triphenylphosphine palladium catalysis and oxidation, acidolysis, ketal, reduction, amido protecting, esterification and reduction, deprotections, obtain target intermediate C.
The another kind of method of comparatively generally using is to take D-ribose as starting raw material, by its intrinsic natural chiral center, controls optical purity in preparation process.Patent WO2011017108, WO2013092900 and < < Bioorganic & Medicinal Chemistry Letters > > 22 phases in 2012 3598-3602 page have reported that D-ribose is by the method that fork acetonization, 1-position methylate, the step such as 5-iodo, the open loop of zinc/acetic acid, hydroxylamination, cyclization, amido protecting, esterification and reduction, deprotection is prepared intermediate C.
Same use D-ribose is starting raw material, and patent WO9703084, < < Tetrahedron:Asymmetry > > 2 volumes 961-964 page in 1991 and 8 volumes 2249-2256 page in 1997 have been reported the another kind of preparation that realizes intermediate C by steps such as fork acetonization, 5-position iodo, lactone reduction, the reaction of oxime ether, cyclization, configuration conversion, hydroxy esterification and reduction, deprotections.
As can be seen here, though at present the preparation of ADZ6140 intermediate C is had to more research report, but all there is many defects, as step is long, raw material is rare, yield is on the low side, separation difficulty, heavy contamination, safety restriction or cost more high, these unfavorable factors make the industrialization of above-mentioned technique be subject to certain restriction.
Summary of the invention
The object of the invention is to overcome the defect of prior art, according to the synthetic theory of Green Chemistry, provide a kind of new ADZ6140 intermediate 2-[[(3aR, 4S, 6R, amino tetrahydrochysene-2 of 6aS)-6-, 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] preparation method of ethanol, this preparation method is easy, economy and environmental protection, the suitability for industrialized production that is conducive to this medicine, and can promote the economic technology of ADZ6140 bulk drug to develop.
To achieve these goals, main technical schemes provided by the present invention is as follows: a kind of ADZ6140 intermediate 2-[[(3aR, 4S, 6R, 6aS) amino tetrahydrochysene-2 of-6-, 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] preparation method of ethanol (intermediate C)
The method comprises the steps: (1R, 2R, 3R.4R)-rel-1,2; 3,4-diepoxy pentamethylene (I) occurs to obtain compound (3aR with ring-opening reaction and the ketal reaction of sodiumazide in acetone and water mixed solvent simultaneously, 4S, 6R, 6aS)-rel-6-azido-tetrahydrochysene-2,2-dimethyl-4H-cyclopenta-1,3-dioxa-4-alcohol (II); Compound (II) generates compound 2-[[(3aR by carrying out etherification reaction with 2-ethylene halohydrin, 4S, 6R, 6aS)-rel-6-azido-tetrahydrochysene-2,2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] ethanol (III), compound (III) obtains 2-[[(3aR through reduction reaction, 4S, 6R, amino tetrahydrochysene-2 of 6aS)-rel-6-, 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] ethanol (IV); Compound (IV) obtains 2-[[(3aR by fractionation, 4S, 6R, 6aS) amino tetrahydrochysene-2 of-6-, 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] ethanol (intermediate C).
In addition, the present invention also provides following attached technical scheme:
(1R, 2R, 3R.4R)-rel-1 in described ring-opening reaction, 2; The molar ratio of 3,4-diepoxy pentamethylene (I) and sodiumazide is 1:1-3, preferably 1:1.1-1.3.
Described acetone and water mixed solvent are acetone/water system, and its volume ratio is acetone/water=1/0.5-1.5, preferably 1/1.
(3aR, 4S, 6R, 6aS)-rel-6-azido-tetrahydrochysene-2 in described etherification reaction, 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-alcohol (II) is 1:1-3 with the molar ratio of 2-ethylene halohydrin, preferably 1:1.5-2.0.
Halogen in described 2-ethylene halohydrin is chlorine, bromine or iodine, preferably chlorine or bromine.
The acid binding agent of described etherification reaction is salt of wormwood, potassium hydroxide, potassium tert.-butoxide, sodium methylate, sodium hydride, triethylamine, pyridine or sodium hydroxide, preferably potassium tert.-butoxide or sodium hydride.
Described reduction reaction can adopt the reduction of metallic iron, zinc, tin, aluminium, indium or samarium, also can adopt hydrazine hydrate/iron trichloride, sodium borohydride, zinc borohydride or Lithium Aluminium Hydride reduction, also can adopt this ester 1 of the Chinese under the katalysis of palladium charcoal, 4-dihydropyridine (HEH) reduction, preferably this ester Isosorbide-5-Nitrae-dihydropyridine (HEH) reduction of the Chinese under the katalysis of palladium charcoal.
The resolving agent of described resolution reaction is L-TARTARIC ACID, D-tartrate, L-amygdalic acid, D-amygdalic acid, diacetyl-L-TARTARIC ACID, dibenzoyl-L-tartaric acid, D-camphorsulfonic acid, L-camphorsulfonic acid, L-phenylglycine, D-PG, L MALIC ACID, D-malic acid, L-Aspartic acid or Pidolidone, preferably L-TARTARIC ACID or D-amygdalic acid.
Than prior art, ADZ6140 intermediate 2-[[(3aR involved in the present invention, 4S, 6R, amino tetrahydrochysene-2 of 6aS)-6-, 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] preparation method of ethanol, its advantage is mainly that synthesis step is succinct, the gentle easily control of reaction conditions, raw material is cheap and easy to get, and product yield and product purity are high, are suitable for large-scale industrial production.
Embodiment
Embodiment mono-:
In reaction flask, add (1R, 2R, 3R.4R)-rel-1,2; 3,4-diepoxy pentamethylene (I) (9.8g, 0.1mol), sodiumazide (8.13g, 0.125mol) and acetone/water (1/1) mixed solvent 200mL, start stirring, is warming up to 45-50 ℃, reacts 72 hours, and GC detection reaction completes.Add ether to solution layering, separate organic phase.Water extracts 5 times with ether and acetone (4:1) 100mL.Merge organic phase, anhydrous magnesium sulfate drying.Concentrating under reduced pressure, residue obtains white solid (3aR, 4S, 6R, 6aS)-rel-6-azido-tetrahydrochysene-2,2-dimethyl-4H-cyclopenta-1,3-dioxa-4-alcohol (II) 9.0g, yield 45.2% through column chromatography (ether/Skellysolve A=5/1).
Embodiment bis-:
Under nitrogen protection, in reaction flask, add (3aR, 4S; 6R; 6aS)-rel-6-azido-tetrahydrochysene-2,2-dimethyl-4H-cyclopenta-1,3-dioxa-4-alcohol (II) (8.0g; 0.04mol), Tetrabutyl amonium bromide (phase-transfer catalyst) 0.25g and dry toluene 100mL; under stirring, add sodium hydride (1.92g, 0.08mol) in batches, drip ethylene bromohyrin (9.92g; 0.08mol), and be slowly warming up to backflow.Keep back flow reaction approximately 24 hours, TLC detection reaction completes.Be cooled to room temperature, add water and stir 15 minutes, layering.Organic phase salt water washing, anhydrous sodium sulfate drying.Vacuum distillation recovered solvent, remaining oily matter normal hexane recrystallization, obtains white solid 2-[[(3aR, 4S, 6R, 6aS)-rel-6-azido-tetrahydrochysene-2,2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] ethanol (III) 8.1g, yield 83.3%.
Embodiment tri-:
Under nitrogen protection, in reaction flask, add 2-[[(3aR, 4S; 6R; 6aS)-rel-6-azido-tetrahydrochysene-2,2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base]-ethanol (III) (7.3g; 0.03mol), this ester 1 of the Chinese; 4-dihydropyridine (9.1g, 0.036mol), 10% palladium charcoal 1.8g and ethanol 50mL, start stirring; be heated to reflux and keep back flow reaction 5 hours, TLC detection reaction completes.Be cooled to room temperature, filter, reclaim catalyzer.Concentrating under reduced pressure, residue is dissolved in methylene dichloride, uses successively 5% hydrochloric acid, saturated aqueous common salt and water washing.Anhydrous sodium sulfate drying, vacuum distillation recovered solvent, obtains light yellow oil 2-[[(3aR, 4S, 6R, 6aS) amino tetrahydrochysene-2 of-rel-6-, 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] ethanol (IV) 5.9g, yield 90.6%.
Embodiment tetra-:
In reaction flask, add 2-[[(3aR, 4S, 6R, amino tetrahydrochysene-2 of 6aS)-rel-6-, 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base]-ethanol (IV) (4.4g, 0.02mol), with acetic acid ethyl dissolution, add L-TARTARIC ACID (3.0g, 0.02mol), stirring at room 6-8 hour, be cooled to 0 ℃, filter the L-TARTARIC ACID salt that gained solid is target product.This solid is placed in to 50mL water, with 30% sodium hydroxide, regulates pH to 12-13, be extracted with ethyl acetate 3 times, merge organic phase.Dry, decompression and solvent recovery, the oily matter 2-[[(3aR obtaining, 4S, 6R, 6aS) amino tetrahydrochysene-2 of-6-, 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] ethanol (intermediate C) 1.85g, yield 84.1%.
It is pointed out that above-mentioned preferred embodiment is only explanation technical conceive of the present invention and feature, its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that spirit is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.

Claims (10)

1. an ADZ6140 intermediate 2-[[(3aR, 4S, 6R, 6aS) amino tetrahydrochysene-2 of-6-, 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] preparation method of ethanol (intermediate C),
It is characterized in that this preparation method comprises the steps: (1R, 2R, 3R.4R)-rel-1,2; 3,4-diepoxy pentamethylene (I) obtains compound (3aR, 4S with sodiumazide generation ring-opening reaction and ketal reaction in acetone and water mixed solvent simultaneously, 6R, 6aS)-rel-6-azido-tetrahydrochysene-2,2-dimethyl-4H-cyclopenta-1,3-dioxa-4-alcohol (II); Described compound (II) generates compound 2-[[(3aR by carrying out etherification reaction with 2-ethylene halohydrin, 4S, 6R, 6aS)-rel-6-azido-tetrahydrochysene-2,2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] ethanol (III), described compound (III) obtains compound 2-[[(3aR, 4S through reduction reaction, 6R, amino tetrahydrochysene-2 of 6aS)-rel-6-, 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] ethanol (IV); Described compound (IV) obtains 2-[[(3aR by fractionation, 4S, 6R, 6aS) amino tetrahydrochysene-2 of-6-, 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] ethanol (intermediate C).
2. the preparation method of ADZ6140 intermediate according to claim 1, is characterized in that: (1R, 2R, 3R.4R)-rel-1 in described nitrine ring-opening reaction, 2; The molar ratio of 3,4-diepoxy pentamethylene (I) and sodiumazide is 1:1-3.
3. the preparation method of ADZ6140 intermediate according to claim 2, is characterized in that: the preferred 1:1.1-1.3 of described molar ratio.
4. the preparation method of ADZ6140 intermediate according to claim 2, is characterized in that: the volume ratio of described acetone and water mixed solvent is acetone/water=1/0.5-1.5.
5. the preparation method of ADZ6140 intermediate according to claim 4, is characterized in that: described volume ratio preferably 1/1.
6. the preparation method of ADZ6140 intermediate according to claim 1, it is characterized in that: (3aR in described etherification reaction, 4S, 6R, 6aS)-rel-6-azido-tetrahydrochysene-2,2-dimethyl-4H-cyclopenta-1,3-dioxa-4-alcohol (II) is 1:1-3 with the molar ratio of 2-ethylene halohydrin.
7. the preparation method of ADZ6140 intermediate according to claim 6, is characterized in that: the halogen in described 2-ethylene halohydrin is chlorine, bromine or iodine.
8. the preparation method of ADZ6140 intermediate according to claim 6, is characterized in that: the acid binding agent of described etherification reaction is salt of wormwood, potassium hydroxide, potassium tert.-butoxide, sodium methylate, sodium hydride, triethylamine, pyridine or sodium hydroxide.
9. the preparation method of ADZ6140 intermediate according to claim 1, it is characterized in that: described reduction reaction reductive agent is this ester Isosorbide-5-Nitrae-dihydropyridine/palladium charcoal of iron, zinc, tin, aluminium, indium, samarium, hydrazine hydrate/iron trichloride, sodium borohydride, zinc borohydride or the Chinese.
10. the preparation method of ADZ6140 intermediate according to claim 1; it is characterized in that: described 2-[[(3aR; 4S; 6R; amino tetrahydrochysene-2 of 6aS)-rel-6-; 2-dimethyl-4H-cyclopenta-1,3-dioxa-4-yl] oxygen base] resolving agent of ethanol (IV) is L-TARTARIC ACID, D-tartrate, L-amygdalic acid, D-amygdalic acid, diacetyl-L-TARTARIC ACID, dibenzoyl-L-tartaric acid, D-camphorsulfonic acid, L-camphorsulfonic acid, L-phenylglycine, D-PG, L MALIC ACID, D-malic acid, L-Aspartic acid or Pidolidone.
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CN103588750B (en) * 2013-11-07 2014-11-26 苏州明锐医药科技有限公司 Method for preparing ticagrelor intermediate
CN106496179A (en) * 2016-10-19 2017-03-15 青岛云天生物技术有限公司 A kind of synthesis technique of ticagrelor intermediate
CN106496180A (en) * 2016-10-19 2017-03-15 青岛云天生物技术有限公司 A kind of preparation method of ticagrelor intermediate
CN107382953A (en) * 2017-07-25 2017-11-24 安徽诺全药业有限公司 A kind of method for preparing polysubstituted cyclopentane derivatives

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GB0013488D0 (en) * 2000-06-02 2000-07-26 Astrazeneca Ab Chemical compound
US8802850B2 (en) * 2009-07-27 2014-08-12 Auspex Pharmaceuticals, Inc. Cyclopropyl modulators of P2Y12 receptor
WO2013092900A1 (en) * 2011-12-23 2013-06-27 Lek Pharmaceuticals D.D. Synthesis of triazolopyrimidine compounds
CN102659815B (en) * 2012-05-04 2013-07-17 开原亨泰制药股份有限公司 Method for preparing selective anticoagulant ticagrelor and intermediates thereof
CN103304437B (en) * 2013-05-16 2015-07-01 广州同隽医药科技有限公司 Method for synthesizing oseltamivir phosphate without using nitrine
CN103408746B (en) * 2013-07-23 2015-12-02 西北工业大学 A kind of end group is containing the preparation method of the poly glycol monomethyl ether of two azido-
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