CN100453542C - Resolution method for 2-hetero ring substituted dihydropyrimidine racemic compounds - Google Patents
Resolution method for 2-hetero ring substituted dihydropyrimidine racemic compounds Download PDFInfo
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- CN100453542C CN100453542C CNB2007100741808A CN200710074180A CN100453542C CN 100453542 C CN100453542 C CN 100453542C CN B2007100741808 A CNB2007100741808 A CN B2007100741808A CN 200710074180 A CN200710074180 A CN 200710074180A CN 100453542 C CN100453542 C CN 100453542C
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- heterocyclic substituted
- racemic compound
- splitting
- dihydropyrimidine
- pyrimidin
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 23
- WCFAPJDPAPDDAQ-UHFFFAOYSA-N 1,2-dihydropyrimidine Chemical class C1NC=CC=N1 WCFAPJDPAPDDAQ-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 230000003287 optical effect Effects 0.000 claims abstract description 23
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 230000008014 freezing Effects 0.000 claims abstract description 15
- 238000007710 freezing Methods 0.000 claims abstract description 15
- 239000012454 non-polar solvent Substances 0.000 claims abstract description 6
- 239000002798 polar solvent Substances 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 3
- 239000003960 organic solvent Substances 0.000 claims abstract description 3
- 150000003839 salts Chemical class 0.000 claims abstract description 3
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 28
- 239000012452 mother liquor Substances 0.000 claims description 28
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 150000003014 phosphoric acid esters Chemical class 0.000 claims description 19
- 235000002639 sodium chloride Nutrition 0.000 claims description 18
- -1 Phenyl Chemical group 0.000 claims description 16
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 14
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 12
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 12
- 239000012046 mixed solvent Substances 0.000 claims description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 claims description 10
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 9
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 claims description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 6
- 235000017550 sodium carbonate Nutrition 0.000 claims description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- 239000003153 chemical reaction reagent Substances 0.000 claims description 4
- 239000013067 intermediate product Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical class [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 3
- RGSFGYAAUTVSQA-UHFFFAOYSA-N pentamethylene Natural products C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims description 3
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 claims description 3
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 3
- 235000015320 potassium carbonate Nutrition 0.000 claims description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 238000002425 crystallisation Methods 0.000 claims description 2
- 230000008025 crystallization Effects 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000012074 organic phase Substances 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000012266 salt solution Substances 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- 125000001544 thienyl group Chemical group 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 abstract description 15
- 239000010452 phosphate Substances 0.000 abstract description 15
- 238000001914 filtration Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- QMZPEPRAOFNSQH-UHFFFAOYSA-N methyl 4-(2-chloro-4-fluorophenyl)-6-methyl-2-(1,3-thiazol-2-yl)-1,4-dihydropyrimidine-5-carboxylate Chemical compound COC(=O)C1=C(C)NC(C=2SC=CN=2)=NC1C1=CC=C(F)C=C1Cl QMZPEPRAOFNSQH-UHFFFAOYSA-N 0.000 description 5
- 239000012044 organic layer Substances 0.000 description 5
- 239000003814 drug Substances 0.000 description 4
- 101710132601 Capsid protein Proteins 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 229940079593 drug Drugs 0.000 description 2
- 239000002024 ethyl acetate extract Substances 0.000 description 2
- 238000005194 fractionation Methods 0.000 description 2
- 208000006454 hepatitis Diseases 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241000700721 Hepatitis B virus Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 231100000283 hepatitis Toxicity 0.000 description 1
- HNDVDQJCIGZPNO-UHFFFAOYSA-N histidine Natural products OC(=O)C(N)CC1=CN=CN1 HNDVDQJCIGZPNO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Abstract
The invention discloses a detaching method of dihydropyrimidine racemic compound substituted by 2-heterocycle, which comprises the following steps: (1) putting 2-heterocycle substituted dihydropyrimidine racemic compound and dinaphthol phosphate detacher with single optical activity into reactor respectively; adding polar solvent and non-polar solvent; (2) stirring; (3) filtering; condensing mother liquid; freezing; stewing; (4) filtering; condensing mother liquid; (5) adding organic solvent; stirring; dissolving; adding 10-30% carbonate solution; separating; extracting; reextracting through saturated edible salt water; drying or crystallizing; obtaining the product.
Description
Technical field
The present invention relates to a kind of method for splitting of organic racemoid, dinaphthol phosphoric acid ester ((R)-(-) 1 that has single optical activity more specifically to a kind of employing, 1 '-binaphthyl-2,2 '-diylhyro-genphosphate or (S)-(+) 1,1 '-binaphthyl-2,2 '-diylhyro-genphosphate) as the method for splitting of resolving agent to the dihydropyrimidine racemic compound of 2-heterocyclic substituted.
Background technology
The dihydro-pyrimidin that Novel 2-heterocyclically replaces, it is the derivative compound that German Bayer AG is about to the anti-hepatitis one class HAP kind new medicine 4109 (compound patent No. US006696451) of listing, by inventions such as German professors Goldman of Bayer AG, its domestic and international patent No. is CN99805170 and US6503913B1, its medicine can directly combine with HBcAg, suppressing particulate forms, and act on the HBcAg dimer, have an effect with Histidine, quicken the degraded of HBcAg, thereby reach the purpose of hepatitis B virus resisting, EP103769A2 discloses its relevant drug action.
Discover that what have hepatitis virus resisting activity is the dihydro-pyrimidin that left-handed or dextral Novel 2-heterocyclically replaces, the method that obtains the single chiral compound at present has the synthetic and chiral separation of chirality.It is 50% that the theory of racemic modification splits productive rate, and as the fractionation US024878A1 employing chemicrystallization Split Method of Bay-4109, yield can reach about 40%.Chirality synthetic optical purity is difficult to reach more than 95%, generally will unite chiral separation and use, so in the actual procedure of suitability for industrialized production chiral drug, mainly use method for splitting.The dihydro-pyrimidin that Novel 2-heterocyclically replaces related activity and pharmacology specimen left-handed or dextrorotatory are split and are got by chiral column.According to Bayer AG and related data demonstration both at home and abroad, there is not the method that chiral column splits the dihydro-pyrimidin of other outer any fractionation Novel 2-heterocyclically replacement temporarily.Chiral column splits theoretical yield can reach 50%, but cost is too high, also is difficult to realize industrialization.
Summary of the invention
The object of the present invention is to provide a kind of dihydropyrimidine racemic compound resolution yield height, optical purity height and good stability to the 2-heterocyclic substituted, easy and simple to handle, practical, be easy to industrialized method for splitting.
Purpose of the present invention can reach by following measure:
The method for splitting of the dihydropyrimidine racemic compound of this 2-heterocyclic substituted may further comprise the steps successively:
(1) respectively with the dihydropyrimidine racemic compound of the 2-heterocyclic substituted of (0.001-1) mole/L and (0.001-1) resolving agent of mole/L drop into reactor, be 1 successively again: the polar solvent of (1～20) and non-polar solvent adding reactor with volume ratio;
(2) stir 0.5h～3h under the room temperature;
(3) filter, mother liquor is concentrated into 0.4～0.6 times of original volume, the mother liquor after will concentrating then is-20 ℃～5 ℃ freezing placements;
(4) mother liquor after freezing is filtered, then new mother liquor is concentrated into driedly, obtain having the intermediate product of single optical activity;
(5) intermediate product that 4 step gained are had a single optical activity is dissolved in the organic solvent, add equal-volume concentration then and be 10～30% weak base salt solution, after stirring 0.5～3h, separatory, extraction is stripped with saturated aqueous common salt, with the organic phase drying again, evaporate to dryness or crystallization promptly get the dihydro-pyrimidin of the 2-heterocyclic substituted of tool single optical activity.
The general structure of the dihydro-pyrimidin of described 2-heterocyclic substituted is as follows:
Wherein: R
1Phenyl or thienyl that representative is replaced by fluorine and/or chlorine,
R
2Represent C
1-C
6Alkoxyl group,
R
3～R
5Represent hydrogen or C independently of one another
1-C
3Alkyl,
D represents oxygen or sulphur atom.
Described resolving agent is dinaphthol phosphoric acid ester with single optical activity ((R)-(-) 1,1 '-binaphthyl-2,2 '-diylhyro-genphosphate or (S)-(+) 1,1 '-binaphthyl-2,2 '-diylhyro-genphosphate).
The dihydropyrimidine racemic compound of described resolving agent and 2-heterocyclic substituted is (0.05～3) with mol ratio: 1 ratio drops into reactor.
Described polar solvent is a kind of solvent or more than one a mixed solvent in acetone, ether, methylene dichloride, chloroform, methyl alcohol, ethanol, Virahol, ethylene glycol, ethyl acetate, dioxane, toluene, acetonitrile, pyridine, acetate, dimethyl sulfoxide (DMSO), dimethyl formamide and the tetrahydrofuran (THF); And when for more than one mixed solvent, wherein a kind of reagent accounts for 60%～99% of total amount.
Described non-polar solvent is a kind of solvent or more than one a mixed solvent in hexanaphthene, sherwood oil, hexane, Skellysolve A, pentamethylene, heptane and the trifluoroacetic acid; And when for more than one mixed solvents, wherein a kind of reagent accounts for 50%～98% of total amount.
Described weak base salt is a kind of material or more than one a mixture in yellow soda ash, sodium bicarbonate, salt of wormwood and the saleratus
The present invention has following advantage compared to existing technology:
Method for splitting yield of the present invention is about 20%, and optical purity reaches more than 99%; Method for splitting is stable, yield is high, optical purity is high, easy and simple to handle, practical, be easy to industrialization.
Embodiment
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Embodiment one
(1) respectively with 1mol 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1, the racemoid of 4-dihydro-pyrimidin-5-carboxylate methyl ester, its structural formula is as follows:
Drop into reactor with the left-handed dinaphthol phosphoric acid ester of 0.92mol resolving agent, add 0.8L methylene dichloride and 1.5L sherwood oil under the mechanical stirring successively;
(2) stir 0.5h under the room temperature, about revolve 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester fully combines with left-handed dinaphthol phosphoric acid ester resolving agent, form left-handed 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1 respectively, the left-handed dinaphthol phosphate ester salt of 4-dihydro-pyrimidin-5-carboxylate methyl ester and dextrorotation 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1, the left-handed dinaphthol phosphoric acid ester of 4-dihydro-pyrimidin-5-carboxylate methyl ester;
(3) filter, mother liquor is concentrated into 0.5 times of original volume, the mother liquor after will concentrating then spends the night 0 ℃ of freezing placement;
(4) mother liquor after freezing placement is spent the night filters, be concentrated into new mother liquor dried then, promptly get left-handed 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester and micro-left-handed dinaphthol phosphoric acid ester or left-handed 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1, the left-handed dinaphthol phosphate ester salt of 4-dihydro-pyrimidin-5-carboxylate methyl ester, optical purity 99%.
(5) said mixture is dissolved in ethyl acetate, add equal-volume 10% yellow soda ash, fully stir, separatory, ethyl acetate extracts once again, merge organic layer, evaporated under reduced pressure gets left-handed 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester, optical purity 99%, resolution yield 12%.
Embodiment two
(1) respectively with 1mol 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1, the racemoid of 4-dihydro-pyrimidin-5-carboxylate methyl ester and 0.5mol dextrorotation dinaphthol phosphoric acid ester resolving agent drop into reactor, add the mixed solvent of 20L methylene dichloride, 80L acetone, 200L sherwood oil and 600L hexanaphthene successively;
(2) stir 0.8h under the room temperature, about revolve 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester fully combines with dextrorotation dinaphthol phosphoric acid ester resolving agent, form left-handed 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1 respectively, 4-dihydro-pyrimidin-5-carboxylate methyl ester dextrorotation dinaphthol phosphate ester salt and dextrorotation 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester dextrorotation dinaphthol phosphate ester salt;
(3) filter, mother liquor is concentrated into 0.6 times of original volume, the mother liquor after will concentrating then spends the night-2 ℃ of freezing placements;
(4) mother liquor after freezing placement is spent the night filters, be concentrated into new mother liquor dried then, promptly get dextrorotation 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester and micro-dextrorotation dinaphthol phosphoric acid ester or dextrorotation 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester dextrorotation dinaphthol phosphate ester salt, optical purity 98%.
(5) said mixture is dissolved in ethyl acetate, add equal-volume 5% salt of wormwood, fully stir, separatory, ethyl acetate extracts once again, merge organic layer, evaporated under reduced pressure gets dextrorotation 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester, optical purity 98.5%, resolution yield 20%.
Embodiment three
(1) respectively with 1mol 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1, the racemoid of 4-dihydro-pyrimidin-5-carboxylate methyl ester and the left-handed dinaphthol phosphoric acid ester of 1.5mol resolving agent drop into reactor, add the mixed solvent of 1L methylene dichloride, 0.8L acetone, 10L sherwood oil, 6L hexanaphthene and 2L trifluoroacetic acid successively;
(2) stir 2h under the room temperature, about revolve 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester fully combines with left-handed dinaphthol phosphoric acid ester resolving agent, form left-handed 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1 respectively, the left-handed dinaphthol phosphate ester salt of 4-dihydro-pyrimidin-5-carboxylate methyl ester and dextrorotation 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1, the left-handed dinaphthol phosphate ester salt of 4-dihydro-pyrimidin-5-carboxylate methyl ester;
(3) filter, mother liquor is concentrated into 0.6 times of original volume, the mother liquor after will concentrating then spends the night 2 ℃ of freezing placements;
(4) mother liquor after freezing placement is spent the night filters, be concentrated into new mother liquor dried then, promptly get left-handed 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester and micro-left-handed dinaphthol phosphoric acid ester or left-handed 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1, the left-handed dinaphthol phosphate ester salt of 4-dihydro-pyrimidin-5-carboxylate methyl ester, optical purity 99.5%.
(5) said mixture is dissolved in methylene dichloride, add equal-volume 20% sodium bicarbonate, fully stir, separatory, methylene dichloride extract once again, merge organic layer, evaporated under reduced pressure gets left-handed 4-(2-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester, optical purity 99.5%, resolution yield 16%.
Embodiment four
(1) respectively with 1mol 4-(2-chloro-4-fluorophenyl)-6-methyl-2-(thiazol-2-yl)-1, the racemoid of 4-dihydro-pyrimidin-5-carboxylate methyl ester, its structural formula is as follows:
Drop into reactor with 1mol dextrorotation dinaphthol phosphoric acid ester resolving agent, add the mixed solvent of 20L methylene dichloride, 8L acetone, 20L sherwood oil and 20L hexanaphthene successively;
(2) stir 3h under the room temperature, about revolve 4-(2-chloro-4-fluorophenyl)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester fully combines with dextrorotation dinaphthol phosphoric acid ester resolving agent, form left-handed 4-(2-chloro-4-fluorophenyl)-6-methyl-2-(thiazol-2-yl)-1 respectively, 4-dihydro-pyrimidin-5-carboxylate methyl ester dextrorotation dinaphthol phosphate ester salt and dextrorotation 4-(2-chloro-4-fluorophenyl)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester dextrorotation dinaphthol phosphate ester salt;
(3) filter, mother liquor is concentrated into 0.6 times of original volume, the mother liquor after will concentrating then spends the night-2 ℃ of freezing placements;
(4) mother liquor after freezing placement is spent the night filters, be concentrated into new mother liquor dried then, promptly get dextrorotation 4-(2-chloro-4-fluorophenyl)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester and micro-dextrorotation dinaphthol phosphoric acid ester or dextrorotation 4-(2-chloro-4-fluorophenyl)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester dextrorotation dinaphthol phosphate ester salt, optical purity 98.5%.
(5) said mixture is dissolved in methylene dichloride, add equal-volume 8% yellow soda ash, fully stir, separatory, methylene dichloride extract once again, merge organic layer, evaporated under reduced pressure gets dextrorotation 4-(2-chloro-4-fluorophenyl)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester, optical purity 98.5%, resolution yield 15%.
Embodiment five
(1) respectively with 1mol 4-(4-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1, the racemoid of 4-dihydro-pyrimidin-5-carboxylate methyl ester, its structural formula is as follows:
Drop into reactor with the left-handed dinaphthol phosphoric acid ester of 2mol resolving agent, add the mixed solvent of 2L methylene dichloride, 3L acetone, 20L sherwood oil, 20L hexanaphthene and 10L trifluoroacetic acid successively;
(2) stir 0.4h under the room temperature, about revolve 4-(4-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester fully combines with left-handed dinaphthol phosphoric acid ester resolving agent, form left-handed 4-(4-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1 respectively, the left-handed dinaphthol phosphate ester salt of 4-dihydro-pyrimidin-5-carboxylate methyl ester and dextrorotation 4-(4-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1, the left-handed dinaphthol phosphate ester salt of 4-dihydro-pyrimidin-5-carboxylate methyl ester;
(3) filter, mother liquor is concentrated into 0.6 times of original volume, the mother liquor after will concentrating then spends the night 2 ℃ of freezing placements;
(4) mother liquor after freezing placement is spent the night filters, be concentrated into new mother liquor dried then, promptly get left-handed 4-(4-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester and micro-left-handed dinaphthol phosphoric acid ester or left-handed 4-(4-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1, the left-handed dinaphthol phosphate ester salt of 4-dihydro-pyrimidin-5-carboxylate methyl ester.
(5) said mixture is dissolved in methylene dichloride, add equal-volume 10% yellow soda ash, fully stir, separatory, methylene dichloride extract once again, merge organic layer, evaporated under reduced pressure gets left-handed 4-(4-chloro-phenyl-)-6-methyl-2-(thiazol-2-yl)-1,4-dihydro-pyrimidin-5-carboxylate methyl ester, optical purity 98.5%, resolution yield 18%.
Claims (9)
1, a kind of method for splitting of dihydropyrimidine racemic compound of 2-heterocyclic substituted is characterized in that: may further comprise the steps successively:
(1) respectively with the dihydropyrimidine racemic compound of the 2-heterocyclic substituted of (0.001-1) mole/L and (0.001-1) resolving agent of mole/L drop into reactor, be 1 successively again: the polar solvent of (1～20) and non-polar solvent adding reactor with volume ratio;
(2) stir 0.5h～3h under the room temperature;
(3) filter, mother liquor is concentrated into 0.4～0.6 times of original volume, the mother liquor after will concentrating then is-20 ℃～5 ℃ freezing placements;
(4) mother liquor after freezing is filtered, then new mother liquor is concentrated into driedly, obtain having the intermediate product of single optical activity;
(5) intermediate product that 4 step gained are had a single optical activity is dissolved in the organic solvent; Add equal-volume concentration then and be 10～30% weak base salt solution, stir 0.5～3h after, separatory, extraction is stripped with saturated aqueous common salt again, with the organic phase drying, filters, evaporate to dryness or crystallization promptly get the dihydro-pyrimidin of the 2-heterocyclic substituted of tool single optical activity.
2, the method for splitting of the dihydropyrimidine racemic compound of 2-heterocyclic substituted according to claim 1 is characterized in that: the general structure of the dihydro-pyrimidin of described 2-heterocyclic substituted is as follows:
Wherein: R
1Phenyl or thienyl that representative is replaced by fluorine and/or chlorine,
R
2Represent C
1-C
6Alkoxyl group,
R
3～R
5Represent hydrogen or C independently of one another
1-C
3Alkyl,
D represents oxygen or sulphur atom.
3, the method for splitting of the dihydropyrimidine racemic compound of 2-heterocyclic substituted according to claim 2 is characterized in that: described resolving agent is the dinaphthol phosphoric acid ester with single optical activity.
4, the method for splitting of the dihydropyrimidine racemic compound of 2-heterocyclic substituted according to claim 3 is characterized in that: the dihydropyrimidine racemic compound of described resolving agent and 2-heterocyclic substituted is (0.05～3) with mol ratio: 1 ratio drops into reactor.
5, the method for splitting of the dihydropyrimidine racemic compound of 2-heterocyclic substituted according to claim 1 is characterized in that: described polar solvent is a kind of solvent or more than one a mixed solvent in acetone, ether, methylene dichloride, chloroform, methyl alcohol, ethanol, Virahol, ethylene glycol, ethyl acetate, dioxane, toluene, acetonitrile, pyridine, acetate, dimethyl sulfoxide (DMSO), dimethyl formamide and the tetrahydrofuran (THF).
6, the method for splitting of the dihydropyrimidine racemic compound of 2-heterocyclic substituted according to claim 5, it is characterized in that: described polar solvent is in acetone, ether, methylene dichloride, chloroform, methyl alcohol, ethanol, Virahol, ethylene glycol, ethyl acetate, dioxane, toluene, acetonitrile, pyridine, acetate, dimethyl sulfoxide (DMSO), dimethyl formamide and the tetrahydrofuran (THF) during more than one mixed solvent, and wherein a kind of reagent accounts for 60%～99% of total amount.
7, the method for splitting of the dihydropyrimidine racemic compound of 2-heterocyclic substituted according to claim 1 is characterized in that: described non-polar solvent is a kind of solvent or more than one a mixed solvent in hexanaphthene, sherwood oil, hexane, Skellysolve A, pentamethylene, heptane and the trifluoroacetic acid.
8, the method for splitting of the dihydropyrimidine racemic compound of 2-heterocyclic substituted according to claim 7, it is characterized in that: described non-polar solvent is in hexanaphthene, sherwood oil, hexane, Skellysolve A, pentamethylene, heptane and the trifluoroacetic acid during more than one mixed solvents, and wherein a kind of reagent accounts for 50%～98% of total amount.
9, the method for splitting of the dihydropyrimidine racemic compound of 2-heterocyclic substituted according to claim 1 is characterized in that: described weak base salt is a kind of material or more than one a mixture in yellow soda ash, sodium bicarbonate, salt of wormwood and the saleratus.
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| CN101468986B (en) * | 2007-12-26 | 2010-12-29 | 香港南北兄弟国际投资有限公司 | Method for splitting dihydropyrimidine racemic compound |
| CN101468987B (en) * | 2007-12-26 | 2011-06-08 | 香港南北兄弟国际投资有限公司 | Method for splitting 2-heterocycle substituted dihydropyrimidine racemic compound |
| CN103664899B (en) * | 2012-09-11 | 2017-06-16 | 广东东阳光药业有限公司 | The Dihydropyrimidines of heteroaryl substitution and its application in medicine |
| CN104672223B (en) | 2013-11-27 | 2018-03-13 | 广东东阳光药业有限公司 | The Preparation Method And Their Intermediate of dihydropyrimidine derivatives |
| WO2016016196A1 (en) * | 2014-07-31 | 2016-02-04 | F. Hoffmann-La Roche Ag | Novel chiral resolution of 4-aryl-2-thiazol-2-yl-1,4-dihydropyrimidine-5-carboxylic acid esters |
| AR107633A1 (en) | 2016-02-19 | 2018-05-16 | Hoffmann La Roche | PROCEDURE FOR THE PREPARATION OF ACID 4-PHENYL-5-ALCOXICARBONIL-2-TIAZOL-2-IL-1,4-DIHYDROPIRIMIDIN-6-IL- [METHYL] -3-OXO-5,6,8,8A-TETRAHIDRO- 1H-IMIDAZO [1,5A] PIRAZIN-2-IL-CARBOXYL |
| WO2019001396A1 (en) * | 2017-06-26 | 2019-01-03 | Sunshine Lake Pharma Co., Ltd. | Dihydropyrimidine compounds and uses thereof in medicine |
| CN110092785A (en) * | 2018-01-31 | 2019-08-06 | 广东东阳光药业有限公司 | A kind of dynamic resolution method of tetrabenazine |
| CA3130596A1 (en) | 2019-03-25 | 2020-10-01 | F. Hoffmann-La Roche Ag | Solid forms of a compound of hbv core protein allosteric modifier |
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