CN1781928A - Crystal of diuridine tetraphosphate or salt thereof and method for preparing the same and method forproducing said compound - Google Patents

Crystal of diuridine tetraphosphate or salt thereof and method for preparing the same and method forproducing said compound Download PDF

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CN1781928A
CN1781928A CN 200510022829 CN200510022829A CN1781928A CN 1781928 A CN1781928 A CN 1781928A CN 200510022829 CN200510022829 CN 200510022829 CN 200510022829 A CN200510022829 A CN 200510022829A CN 1781928 A CN1781928 A CN 1781928A
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salt
ump
crystal
dpp
ppi
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CN100354296C (en
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前田秀明
山田寿雄
佐藤浩史
野田丰
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Yamasa Corp
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Yamasa Corp
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Abstract

A high purity and stable crystal of P<1>, P<4>-di(uridine5'-) tetraphosphate (U2P4) or a salt thereof, and a method for preparing the crystal which comprises purifying a crude U2P4 by using the anionic exchange chromatography and the active carbon chromatography and crystallizing the crystal using a hydrophilic organic solvent. A method for producing U2P4 or a salt thereof in high yield comprising providing UMP as a starting material and using DPC and PPi, characterized by practicing at least one treatment selected from among (a) in the step of reacting UMP-DPP with PPi-organic alkali salt, adding UMP-DPP in a plurality of installments, (b) in the step of reacting UMP-DPP with PPi-organic alkali salt, carrying out a reaction in the presence of a base and (c) after U2P4-synthesizing reaction, subjecting the reaction product to an alkali treatment.

Description

The crystal and its preparation method of two uridines, four phosphoric acid or its salt and the method for preparing this compound
The application is dividing an application of Chinese patent application No.200310120918.1, and its applying date is on October 1st, 1999.
Invention field
The present invention relates to can be used as the P of the active component of expectorant or pneumonia therapeutic agent 1, P 4-two (uridine 5 '-) four phosphoric acid (U 2P 4) or the stable crystal of its salt; The method for preparing this crystal; Prepare expeditiously U 2P 4Or the method for its salt.
Background technology
P shown in the formula (I) 1, P 4Tetra-na salt (the U of-two (uridines 5 '-) four phosphoric acid 2P 44Na)
Have phlegm-dispelling functions, and be the compound (for example U.S. Pat 5789391,5763447 and 5635160) of expectation as expectorant or the exploitation of pneumonia therapeutical agent.
Do not obtain up to now the U of crystal form 2P 4, only made the U of lyophilized products form 2P 4(referring to the embodiment 1 of WO 99/05155).The U that makes by conventional method 2P 4Its purity is low to moderate 90%, and contains accessory substance.The example of accessory substance comprise nucleosides 5 '-(many) phosphoric acid, for example uridine 5 '-four phosphoric acid (UP 4), uridine 5 '-triphosphoric acid (UTP), uridine 5 '-diphosphonic acid (UDP), uridine 5 '-one phosphoric acid (UMP); And dinucleotide polyphosphates, for example P 1, P 4-two (uridine 5 '-) triphosphoric acid (U 2P 3) and P 1, P 4-two (uridine 5 '-) diphosphonic acid (U 2P 2).Particularly be difficult to nucleosides 5 '-(many) phosphoric acid for example UTP and U 2P 4Separately, and only very difficultly by conventional purification process, be that ion-exchange chromatography has made high-purity U 2P 4(WO 99/05155, Biochimicaet Biophysica Acta, 438, (1976) 304-309).
Above-mentioned purifying and freeze-drying prods have such as the such shortcoming of high-hygroscopicity.Therefore, by U 2P 4The preparation medicine must carry out in the well controlled special device of humidity.Even after the medicine preparation, also the product close packing must be got up.In addition, because the stability of lyophilized formulations is not good, so the term of validity of medicine is very short, thereby wish to obtain to have high-purity and stable U 2P 4Crystal.
U 2P 4By uridine 5 '-one phosphoric acid (UMP) by use activator for example diphenyl phosphate chloride (DPC) and phosphoric acid agent for example pyrophosphate (PPi) is synthetic.Yet the synthetic yield that ordinary method provides is very low, promptly is low to moderate about 10wt.% (the embodiment 4B of WO 99/05155), and may becomes practical approach never.Therefore, also needing to develop can be with high yield and extensive preparation U 2P 4Method.
In view of the foregoing, the purpose of this invention is to provide U 2P 4Or the stable crystal of its salt.Another object of the present invention provides the described crystalline method of preparation.A further object of the invention provides to prepare expeditiously on a large scale U 2P 4Method.
The present invention is open
Present inventors are to purifying U 2P 4Method and by the synthetic U of UMP 2P 4Method carried out deep research.Present inventors have been found that the U by chromatography (activated carbon chromatography) purifying of anion-exchange chromatography and employing active carbon 2P 4Be easy to crystallization, and synthesizing U by use DPC and PPi by the UMP as raw material 2P 4Process in, use special reaction condition can significantly improve U 2P 4Productive rate.Based on these discoveries, the present invention is accomplished.
Therefore, the invention provides P 1, P 4The crystal of-two (uridines 5 '-) four phosphoric acid or its salt.
The present invention also provides P 1, P 45.9,11.5,12.4,15.4,17.2,18.0,19.8 and 20.5 the crystal of-two (uridines 5 '-) four tetrasodium phosphate salt, this crystal has near the crystalline structure that shows characteristic peak in adopting the Alpha-ray X-ray diffraction of Cu-K following diffraction angle (2 θ): (°).
The present invention also provides P 1, P 4The crystal of-two (uridines 5 '-) four tetrasodium phosphate salt, this crystal has in the IR absorption spectrum at 1690,1277,1233,1146,1116 and 890 (cm -1) near wavelength table reveal the crystalline structure of characteristic peak.
The present invention also provides preparation P 1, P 4The crystalline method of-two (uridines 5 '-) four phosphoric acid or its salt, this method comprises by anion-exchange chromatography and activated carbon chromatography purifying P 1, P 4The crude product of-two (uridines 5 '-) four phosphoric acid or its salt, and hydrophilic organic solvent is added to the P of purifying 1, P 4In the solution of-two (uridines 5 '-) four phosphoric acid or its salt, to be settled out crystal.
The present invention also provides by using diphenyl phosphate chloride (DPC) and pyrophosphate salt (PPi) by uridine 5 '-one phosphoric acid (UMP) the preparation P as raw material 1, P 4The method of-two (uridines 5 '-) four phosphoric acid or its salt, this method comprises at least one following treatment step:
(a) during the step of UMP diphenyl phosphate (UMP-DPP) and PPi-organic bases reactant salt, add UMP-DPP in batches;
(b) in the presence of alkali, carry out the step of UMP-DPP and PPi-organic bases reactant salt;
(c) further with the synthetic U of alkali treatment 2P 4
The accompanying drawing summary
Accompanying drawing 1 is the U that crystallization goes out from ethanolic solution 2P 4The X-ray diffraction spectrum of 4Na tetrahydrate crystal.
Accompanying drawing 2 is U that crystallization goes out from ethanolic solution 2P 4The X-ray diffraction spectrum of 4Na eight hydrate crystals.
Accompanying drawing 3 is the U that obtain by freeze drying 2P 4X-ray diffraction spectrum.
Accompanying drawing 4 is the U that show that crystallization goes out from ethanolic solution 2P 4The photo of the crystalline form of 4Na eight hydrate crystals.(ratio of enlargement: 440) take down, wherein the 1cm in image is equivalent to 23 μ m to this photo at polarizing microscope.
Accompanying drawing 5 is U that crystallization goes out from ethanolic solution 2P 4The IR absorption spectrum of 4Na eight hydrate crystals.
Accompanying drawing 6 is the U that obtain by freeze drying 2P 4The IR absorption spectrum.
Accompanying drawing 7 is U that crystallization goes out from methanol solution 2P 4The X-ray diffraction spectrum of 4Na eight hydrate crystals.
Implement best mode of the present invention
U of the present invention 2P 4Or the crystal of its salt is to obtain like this: use any special measures purifying U 2P 4Or the crude product of its salt, hydrophilic organic solvent is added to the U of purifying 2P 4Or in the solution of its salt, so that solute comes out as crystalline deposit.Hereinafter will be according to (1) purifying U 2P 4Or its salt and (2) crystallization U 2P 4Or its salt is described the present invention.
(1) purifying U 2P 4Or its salt
Can be by anion-exchange chromatography and the activated carbon chromatography purifying U that unites use 2P 4Or its salt.Although these two kinds of chromatographic techniques can carry out with random order, from improving U 2P 4The angle of purity, anion-exchange chromatography were preferably carried out before activated carbon chromatography.
In above-mentioned chromatographic technique, can use vinylbenzene or acrylic resin as anionite-exchange resin.The example of spendable resin comprises for example AMBERLITEIRA 402 (Rohm ﹠amp of strongly basic anion exchange resin; Haas Co.), DIAION PA-312 and DIAION SA-11A (Mitsubishi Chemical Co.Ltd.) and weak base anion-exchange resin AMBERLITE IRA 67 (Rohm ﹠amp for example; Haas Co.) and DIAION WA-30 (Mitsubishi Chemical Co.Ltd.).
Gac can be to pulverize or be shaped as particulate chromatographic grade gac, and can comprise commercially available prod (for example Wako Pure Chemical Industries, the product of Ltd. and FutamuraKagaku Kogyo).
Chromatography can be carried out with batch mode, perhaps can be by carrying out with post.When carrying out column chromatography, for anion-exchange chromatography, can use aqueous acid or itself and have strengthen ionic strength salt for example the mixture of sodium-chlor as eluent; For the activated carbon column chromatography method, can make water or alkali for example the aqueous solution of sodium hydroxide as eluent.In order suitably to determine the concentration of each eluant, eluent, can in the 0.001M-10M scope, carry out the small-scale pre-trial.
(2) crystallization U 2P 4Or its salt
By hydrophilic organic solvent being added to the thus U of purifying 2P 4Or come crystallization U in the solution of its salt 2P 4Or its salt.
The example of spendable hydrophilic organic solvent comprises the alcohol that has 6 or be lower than 6 carbon atoms, for example methyl alcohol and ethanol; Ketone is acetone for example; Ether is dioxane for example; Nitrile is acetonitrile for example; With acid amides dimethyl formamide for example.Wherein alcohol, especially ethanol is particularly preferred.
More specifically, the optional treatment U of purifying thus 2P 4Or the solution of its salt or by this solution being concentrated the slurry obtain so that pH is adjusted to 6-9,60 ℃ or 60 ℃ of following temperature hydrophilic organic solvent is added in this solution or the slurry, so that solute is as stable U 2P 4Crystal settling comes out.
Thus obtained U of the present invention 2P 4Crystal contains the U more than (1) 95% or 95% 2P 4And (2) 5% or be lower than other homologous compound of 5%.
In the present invention, other homologous compound comprise nucleosides 5 '-(many) phosphoric acid, for example UP 4, UTP, UDP and UMP; With dinucleotide polyphosphates U for example 2P 3And U 2P 2
More preferably, U 2P 4Crystal contains the U more than (1) 97% or 97% 2P 4, (2) 1% or be lower than 1% UDP and (3) 1% or be lower than 1% UTP.Particularly preferably, U 2P 4Crystal contains the U more than (1) 98% or 98% 2P 4, (2) 0.5% or be lower than 0.5% UDP and (3) 0.5% or be lower than 0.5% UTP.
High-purity U of the present invention 2P 4Crystal can be the form of salt, hydrate or salt hydrate.The example of salt comprises pharmacologically acceptable salt for example an alkali metal salt such as sodium salt and sylvite; Alkaline earth salt is calcium salt and magnesium salts for example; And ammonium salt.U 2P 4Can be replaced to form salt by 1-4 metallic atom.
Above-mentioned hydrate can comprise 3-8 combination or be attached to a U 2P 4Hydrone on the molecule, above-mentioned salt hydrate can comprise 3-8 combination or be attached to a U 2P 4Hydrone on the alkali metal salt molecule.
Preferred U 2P 4The example of crystal comprises U 2P 44Na crystal and hydrate thereof.U 2P 4The 4Na crystal shows characteristic peak near following diffraction angle (2 θ) in adopting the Alpha-ray X-ray diffraction of Cu-K: 5.9,11.5,12.4,15.4,17.2,18.0,19.8 and 20.5 (°) (limit of error ± 0.1 °), and in the IR absorption spectrum at 1690,1277,1233,1146,1116 and 890 (cm -1) near wavelength table reveal characteristic peak (limit of error ± 2cm -1).In addition, compare with conventional freeze-drying prods.U 2P 44Na crystal easy operating, and very useful, and this is stable because of this crystal under high temperature, high humidity, and the moisture of crystal is stabilized in 5-15wt.%, has suppressed further moisture absorption.
As mentioned above, thus obtained U of the present invention 2P 4The 4Na crystal contains the U more than (1) 95% or 95% 2P 4And (2) 5% or be lower than other homologous compound of 5%.In addition, as mentioned above, preferred U 2P 4Crystal comprises the U that contains more than (1) 97% or 97% 2P 4, (2) 1% or be lower than 1% UDP and (3) 1% or be lower than the crystal of 1% UTP, particularly contain the U more than (1) 98% or 98% 2P 4, (2) 0.5% or be lower than 0.5% UDP and (3) 0.5% or be lower than the crystal of 0.5% UTP.
In addition, U of the present invention 2P 4Or the crystal of its salt also comprises its dynamic isomer.
Can choose wantonly U of the present invention 2P 4Or the crystal of its salt places container (for example bottle, bag, tank, ampoule) then by conventional method drying drying under reduced pressure, dry or by heat drying under air-flow for example.Can be packaged in the container so that container opening, sealing, airtight or sealing.From keeping the crystalline package stability, opening condition is not preferred.
Synthetic U will be described below 2P 4High efficiency method.
In conventional method, U 2P 4Or its salt mainly be by as the uridine 5 of raw material '-one phosphoric acid (1MP) by use activator for example diphenyl phosphate chloride (DPC) and phosphoric acid agent for example pyrophosphate (PPi) is synthetic.Specifically, DPC and tri-butylamine are added in the tributyl amine salt of UMP, to make the UMP diphenyl phosphate (UMP-DPP) as reactive intermediate, this intermediate and tri-butylamine pyrophosphate (TBA-PPi) react, and the productive rate with about 9.6% makes U 2P 4Or its salt (the embodiment 4B of WO 99/05155).
The inventive method is characterised in that, carries out at least one following treatment step: (a) add UMP-DPP during the conventional steps of UMP-DPP and PPi-organic base reactant salt in batches; (b) in the presence of alkali, carry out the reaction of UMP-DPP and the organic alkali salt of PPi-; (c) again with the synthetic U of alkali treatment 2P 42 or more above-mentioned steps can be united and carried out.
Step " (a) adds UMP-DPP in batches " and is meant, divides several rather than disposable adding UMP-DPP, and wherein the integral molar quantity of UMP-DPP must be at least 2 times of the organic alkali salt of PPi-.For example, with the UMP-DPP reaction of the organic alkali salt of PPi-and equimolar amounts, and repeat this step.Although to UMP-DPP to add indegree without any particular limitation in batches, from improving the angle of productive rate, it is preferred dividing 2-3 adding.
The example of the organic alkali salt of PPi-comprises hexylamine salt, dibutyl amine salt, triethylamine salt and tributyl amine salt.With the reaction of UMP-DPP in, the organic alkali salt of PPi-can be dissolved in the solvent.The example of solvent comprises acid amides, for example DMF, DMAC and methane amide; Cyclic ether, for example dioxane and tetrahydrofuran (THF); Ketone is acetone for example; With two or more mixture of methylimidazole alkane ketone, HMPA, methyl-sulphoxide, acetonitrile or they.Then UMP-DPP is added in this solution, with this mixture room temperature reaction about 30 minutes-5 hours.
The step reaction of UMP-DPP and the organic alkali salt of PPi-" (b) carry out in the presence of alkali " is meant the reaction of carrying out in the presence of alkali.The example of alkali comprises for example pyridine, 2 of pyridines alkali, 6-lutidine, 2, and 4-lutidine, α-, β-, γ-picoline, 2,4-dimethylaminopyridine and α-, β-, γ-trimethylpyridine, wherein pyridine is particularly preferred.Be used for alkali of the present invention and also comprise the basic solvent that is used for this reaction.Concentration to alkali is not particularly limited.By UMP, preferably add 6 equivalents or more equivalents, the more preferably alkali of 18 equivalents or more equivalents.
In addition, step is " again with the synthetic U of alkali treatment 2P 4" refer to that water will contain synthetic U 2P 4The reaction terminating of liquid, and with organic base or inorganic base this mixture of solution-treated of NaOH, ammonia, potassium hydroxide, pyridine, triethylamine or sodium carbonate for example.In conventional method, be direct purification this be terminated the liquid of reaction.Yet, compare with this conventional method, can improve U with alkali treatment 2P 4Separation yield.
With in the processing of alkali, contain synthetic U with water treatment 2P 4Liquid, alkali is added in this mixture so that the pH of this mixture becomes about 8-13, preferred 10-12.With this mixture room temperature reaction about 10 minutes-5 hours.
UMP-DPP can make by UMP is synthetic by conventional method.For example, the UMP trialkyl amine salt that will make by ordinary method for example UMP tributyl amine salt be dissolved in the solvent.The example of solvent comprises acid amides, for example DMF and N,N-DIMETHYLACETAMIDE (DMAC); Cyclic ether, for example dioxane and tetrahydrofuran (THF); Ketone is acetone for example; With methylimidazole alkane ketone, HMPA or their mixture.Then with DPC and, if necessary, trialkylamine is added in this solution, and with this mixture room temperature reaction about 30 minutes-5 hours, with synthetic UMP-DPP as reactive intermediate.
Embodiment
Below by embodiment the present invention is described in more detail.
Embodiment 1 synthetic U 2P 4Or its salt
(1) effect of alkali
With DMAC (8mL) be added to anhydro uridine 5 '-one tricresyl phosphate butyl amine salt (UMP-TBA) (6.2mmol) in, under agitation in this mixture, drip DPC (1.7mL).With thus obtained mixture room temperature reaction 1 hour to form UMP-DPP, then TBA (7.6mL) is added in this reaction mixture restir 10 minutes.The TEA-PPi (3.0mmol) that will dewater therebetween is dissolved in pyridine (1.7mL), and the solution that makes thus is added in the UMP-DPP reaction mixture.Then with this mixture stirring at room 3 hours, in this mixture, add entry, with termination reaction.Analyze the gained reactant mixture by HPLC (at 262nm), the result shows that the productive rate with 18.3% has made target product U 2P 4
Can be clear that from this result, when UMP-DPP and TEA-PPi are reacted in the presence of alkali (pyridine), can be being that about 2 times productive rate of the productive rate that obtained of conventional method is synthesized to U 2P 4
(2) unite the effect of using alkali and alkali treatment
With DMAC (8mL) be added to anhydro uridine 5 '-one tricresyl phosphate butyl amine salt (UMP-TBA) (6.2mmol) in, under agitation in this mixture, drip DPC (1.7mL).With thus obtained mixture room temperature reaction 1 hour to form UMP-DPP, then TBA (7.6mL) is added in this reaction mixture restir 10 minutes.The TEA-PPi (3.0mmol) that will dewater therebetween is dissolved in pyridine (1.7mL), and the solution that makes thus is added in the UMP-DPP reaction mixture.Then with this mixture stirring at room 3 hours, in this mixture, add entry, with termination reaction.30% sodium hydroxide solution is added in the above-mentioned gained reactant mixture so that pH is adjusted to 11.0, with this mixture hold over night.Analyze the gained reactant mixture by HPLC (at 262nm), the result shows that the productive rate with 29.7% has made target product U 2P 4
Can be clear that from this result, when UMP-DPP and TEA-PPi being reacted in the presence of alkali (pyridine) and use alkali treatment, can be being that about 3 times productive rate of the productive rate that obtained of conventional method synthesizes U 2P 4
(3) alkali and in batches add the effect of UMP-DPP
The triethylamine salt (TEA-PPi) that methane amide (1.5mL) and pyridine (1.5mL) are added to the dehydration tetra-sodium (6mmol) in, this mixture is stirred in container.Therebetween, in another container, with DMAC (4.3mL), dioxane (4.8mL) and tributylamine (TBA) (5.8mL) be added to anhydro uridine 5 '-one tricresyl phosphate butyl amine salt (UMP-TBA) (12mmol) in, and stir this mixture.Then DPC (2.5mL) is added drop-wise in this mixture, thus obtained mixture room temperature restir 1 hour, to form UMP-DPP.Half UMP-DPP reaction mixture is added drop-wise in the container that contains TEA-PPi, this is reflected at room temperature carried out 1 hour.Then pyridine (1.5mL) is added in this mixture, remaining UMP-DPP reaction mixture is added drop-wise in this container.Thus obtained reactant mixture was reacted 1 hour in room temperature again, water is added in this mixture to stop this reaction.Analyze the gained reactant mixture by HPLC (at 262nm), the result shows that the productive rate with 29.5% has made purpose product U 2P 4
Can be clear that from this result, add for 2 times and UMP-DPP and TEA-PPi when in the presence of alkali (pyridine), reacting when UMP-DPP is divided, can be being that about 3 times productive rate of the productive rate that obtained of conventional method makes U 2P 4
Also can be clear that from this result, divide 2 addings that 29.5% productive rate is provided UMP-DPP, be about 1.6 times of the productive rate (18.3%) that obtains in above-mentioned (1).
(4) effect of alkaline purification
The triethylamine salt (TEA-PPi) that methane amide (1.5mL) and pyridine (1.5mL) are added to the dehydration tetra-sodium (6mmol) in, this mixture is stirred in container.Therebetween, in another container, with DMAC (4.3mL), dioxane (4.8mL) and tributylamine (TBA) (5.8mL) be added to anhydro uridine 5 '-one tricresyl phosphate butyl amine salt (UMP-TBA) (12mmol) in, and will stir the mixture.Then DPC (2.5mL) is added drop-wise in this mixture, thus obtained mixture room temperature restir 1 hour, to form UMP-DPP.Half UMP-DPP reaction mixture is added drop-wise in the container that contains TEA-PPi, this is reflected at room temperature carried out 1 hour.Then pyridine (1.5mL) is added in this mixture, remaining UMP-DPP reaction mixture is added drop-wise in this container.Thus obtained reactant mixture was reacted 1 hour in room temperature again, water is added in this mixture to stop this reaction.30% sodium hydroxide solution is added in the above-mentioned gained reactant mixture that pH is adjusted to 11.0, this mixture is placed spent the night.Analyze the gained reactant mixture by HPLC (at 262nm), the result shows that the productive rate with 32.2% has made target product U 2P 4
Can be clear that from this result when adding alkali treatment in above-mentioned (3), it is about 10% that productive rate has improved, and namely is increased to 32.2% from 29.5%.
Embodiment 2 preparation U 2P 4The 4Na crystal
The triethylamine salt (TEA-PPi) that methane amide (10mL) and pyridine (15mL) are added to the dehydration tetra-sodium (40.5mmol) in, this mixture is stirred in container.Therebetween, in another container, with DMAC (50mL), dioxane (34mL) and tributylamine (TBA) (30mL) be added to anhydro uridine 5 '-one tricresyl phosphate butyl amine salt (UMP-TBA) (80mmol) in, and stir this mixture.Then DPC (17.8mL) is added drop-wise in this mixture, thus obtained mixture room temperature restir 1 hour, to form UMP-DPP.Half UMP-DPP reaction mixture is added drop-wise in the container that contains TEA-PPi, this is reflected at room temperature carried out 1 hour.Then with 4-dimethylaminopyridine (DMAP) (50mg) and pyridine (15mL) be added in this mixture, remaining UMP-DPP reaction mixture is added drop-wise in this container.Thus obtained reactant mixture was reacted 2 hours in room temperature again, water is added in this mixture to stop this reaction.It is 700mL that water is diluted to cumulative volume with this reactant mixture, and sodium hydroxide solution is added in this solution so that pH is adjusted to 10.This solution is concentrated into 200mL, under agitation ethanol (250mL) is added in this concentrated solution.This solution 4 ℃ of standing over night, and is removed supernatant liquor by decant.Water is 250mL with thus obtained solution dilution to cumulative volume, analyzes by HPLC (at 262nm), and the result shows that the productive rate with 30.0% has made target product U 2P 4
It is 2000mL that water is diluted to cumulative volume with above-mentioned gained solution (110mL), with the solution of this dilution be added to weak anionic exchange column (AMBERLITE IRA-67) (C1 type) (200mL) on.Wash then this post with water, with accessory substance under the 0.18M hydrochloric acid wash-out, then with target product U under the 0.005M hydrochloric acid wash-out that contains 0.35M NaCl 2P 4(recovery percentage: 82.7%).
Sodium hydroxide solution is added in the elutriant of gained thus with pH regulator to 2.5.Then, this elutriant is applied on the activated carbon column (Taiko SGP), washes this post with water, and (reclaim per-cent: 84.9%) with 0.05M sodium hydroxide solution wash-out.
With the pH regulator to 7.6 of the elutriant of gained thus, this elutriant is concentrated into 38mL.Then ethanol (57mL) is added in this solution that concentrates, has obtained 3.1g U 2P 44Na crystal (water content: 7.8%) (separation yield: 18.4%).
(U 2P 4The physical property of 4Na crystal)
With the U that compels the wind drier and will in embodiment 2, make 2P 4The 4Na crystal is 60 ℃ of dryings 4 hours, and carries out Instrumental Analysis.In addition, prepare U according to the method identical with WO 99/05155 embodiment 1 described method 2P 44Na freeze-drying prods, and the physical property of the product that makes more thus and above-mentioned crystal.
(1) instrumental analysis
1) purity check
The U that will in embodiment 2, obtain by high performance liquid chromatography 2P 44Na crystal and by containing U behind each chromatography purification 2P 4Fraction carry out purity analysis.The gained result is as shown in table 1.The condition of high performance liquid chromatography is as follows:
Post: HITACHIGEL#3013-N (product of Hitachi Keisokuki Service)
Eluent: 10%CH 3CN, 0.18M NH 4Cl, 0.03M KH 2PO 4, and 0.03MK 2HPO 4
Detection method: carry out UV at 262nm and detect
Table 1
Material proportion (wt.%)
U 2P 4And analog Reactant mixture Behind the anion-exchange column Behind the activated-charcoal column After the crystallization
UMP U 2P 2UDP U 2P 3UTP U 2P 4UP 4 7.5 29.8 2.5 17.6 13.0 21.0 7.3 0.5 0.4 0.1 0.2 0.8 97.9 (-) 0.3, (-) 0.2, (-) 0.4 98.6, (-) (-), (-) 0.1, (-) 0.1 99.8, (-)
(-): be lower than detectability
2) water-content
Measure U by karl fischer method 2P 4The moisture of 4Na crystal found that moisture is 5-15wt.%, becomes along with degree of drying.This result clearly illustrates that 3-8 water molecules arranged or be attached to U 2P 4On the molecule.
3) fusing point
Measure U by conventional method 2P 4The fusing point of 4Na crystal, the result records its decomposition point and is about 223 ℃.The decomposition point of freeze-drying prods is about 220 ℃.
4) X-ray diffraction
Use x-ray diffractometer (model: RINT2500V, the product of Rigaku Denki) to carry out under the following conditions U 2P 4The X-ray measuring of 4Na crystal.Thus obtained X-ray diffraction spectrum is shown in attached Fig. 1 and 2, and peak-data is shown in table 2 and 3.
(condition determination)
X-x ray tube: Cu-K α
X-ray output: 50kV-300mA
Scanning speed: 4.0 °/minute
Scanning step: 0.02 °
Angular measurement scope: 2-40 °
Slit: DS-0.5 °, RS-0.15mm, SS-0.5 °
Preliminary treatment: grind with agate mortar
Table 2
The peak numbering 2 θ (°) Relative intensity (I/I 0)
1 5 6 10 13 15 16 17 18 19 25 29 30 35 5.96 11.58 12.42 15.42 17.18 18.04 19.86 20.56 21.18 21.40 25.22 27.52 27.98 30.60 100 38 79 48 45 55 84 73 51 51 42 45 47 40
Table 3
The peak numbering 2 θ (°) Relative intensity (I/I 0)
1 5 6 10 12 14 15 16 17 18 24 29 30 35 5.96 11.56 12.42 15.42 17.18 18.04 19.86 20.58 21.20 21.42 25.20 27.54 27.96 30.60 100 41 90 51 48 63 90 90 56 59 50 56 57 48
That accompanying drawing 1 and table 2 show is U 2P 4The data of 4Na tetrahydrate crystal, the U that accompanying drawing 2 and table 3 show 2P 4The data of 4Na eight hydrate crystals.In addition, the accompanying drawing 3 X-ray diffraction spectrum that shown freeze-drying prods is with as a reference.
5) water absorbability
Moisture is about 14% U 2P 44Na crystal (eight hydrates) was placed 9 days under the following conditions: a) 25 ℃ and 57% relative humidity; B) 25 ℃ and 75% relative humidity; And c) 40 ℃ and 75% relative humidity.Not observing any decomposition or weight under above-mentioned 3 kinds of situations changes.This has confirmed that this crystal is stable and without any water absorbability.Moisture is about 8% U 2P 44Na crystal (tetrahydrate) was placed 9 days under 40 ℃ and 75% relative humidity condition.Moisture content increases to 14-15% in this case.Yet moisture does not further increase, and crystal is stable.
In contrast, when (original water content: when about 1%) placing 9 days under 40 ℃ and 75% relative humidity condition, moisture content increases gradually, and at the 7th day that stores, product was owing to deliquescence presents muddy freeze-drying prods.
6) stability
With U 2P 44Na crystal (eight hydrates) and freeze-drying prods place respectively bottle separately, place 13 days (accelerated test) with bottle seal and at 60 ℃ then.Do not observe crystal and decompose, and observe freeze-drying prods U 2P 4It is about 1.4% that 4Na purity has reduced, and this shows that freeze-drying prods has decomposed.
7) crystalline form
Accompanying drawing 4 has shown U 2P 4The photo of the general crystalline form of 4Na (eight hydrates) crystal.
8) IR absorption spectrum
Use JASCO 5000 spectrophotometers to measure in a usual manner U 2P 4The IR spectrum of 4Na crystal (eight hydrates) and freeze-drying prods.The result is shown in accompanying drawing 5 and 6.U 2P 4The freeze-drying prods of 4Na is at 3416,1702,1266,1116,1079 and 906 (cm -1) locate to occur peak (accompanying drawing 6), and U 2P 4The 4Na crystal is at 3386,1690,1277,1233,1146,1116 and 890 (cm -1) locate to occur peak (accompanying drawing 5).
Embodiment 3 preparation U 2P 44Na eight hydrate crystals
Will be by process the U that contains that obtains with post in embodiment 2 2P 4Fraction concentrate, to obtain slurry, its pH is adjusted to 7.0.Under agitation in this slurry, add gradually methyl alcohol, this slurry is further stirred being cooled under 10 ℃ the condition, be settled out U 2P 4The 4Na crystal.
Measure thus acquisition and dry U by karl fischer method 2P 4The moisture of 4Na crystal, result confirm that this crystal is eight hydrates.This crystalline X-ray diffraction spectrum as shown in Figure 7, its peak-data is as shown in table 4.
Table 4
The peak numbering 2 θ (°) Relative intensity (I/I 0)
1 5 6 8 10 11 12 13 14 19 23 24 30 5.96 11.58 12.42 15.40 17.20 18.04 19.84 20.62 21.42 25.38 27.58 27.98 30.64 100 30 77 50 38 38 82 66 48 36 39 37 33
Industrial applicibility
As mentioned above, compare with freeze-drying prods, by the U of the inventive method acquisition2P 4Therefore or the crystal of its salt has high purity and stability and lower suction temperature, can be as the raw material of preparation medicine.
The present invention prepares U2P 4Or the method for its salt realized high yield, and makes it possible to extensive synthetic.

Claims (2)

1. by using diphenylphosphine acyl chloride (DPC) and pyrophosphate salt (PPi) by uridine 5 '-one phosphoric acid (UMP) preparation P as raw material 1, P 4The method of-two (uridines 5 '-) four phosphoric acid or its salt, this method comprises at least one following treatment step (a)-(c):
(a) during the step of UMP diphenyl phosphate (UMP-DPP) and PPi-organic bases reactant salt, add UMP-DPP in batches;
(b) in the presence of alkali, carry out the step of UMP-DPP and PPi-organic bases reactant salt; With
(c) further with the synthetic U of alkali treatment 2P 4
2. according to the preparation P of claim 1 1, P 4The method of-two (uridines 5 '-) four phosphoric acid or its salt is comprising step as claimed in claim 1 (a)-(c).
CNB2005100228292A 1998-10-02 1999-10-01 Crystal of diuridine tetraphosphate or salt thereof and method for preparing the same and method forproducing said compound Expired - Lifetime CN100354296C (en)

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US6423694B1 (en) * 1996-02-21 2002-07-23 Inspire Pharmaceuticals, Inc. Method of treating otitis media with uridine triphosphates and related compounds
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CN106163561A (en) * 2013-11-27 2016-11-23 全球橡果有限公司 Compositions
CN107709345A (en) * 2015-06-29 2018-02-16 雅玛山酱油株式会社 (the uridine 5 ' of P1, P4 bis-）The store method of four phosphoric acid crystal
CN114395006A (en) * 2015-06-29 2022-04-26 雅玛山酱油株式会社 Method for preserving crystal of P1, P4-di (uridine 5') -tetraphosphate
CN114478660A (en) * 2015-06-29 2022-05-13 雅玛山酱油株式会社 Method for preserving crystal of P1, P4-di (uridine 5') -tetraphosphate

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