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CN109678775A - A kind of crystal form and preparation method thereof of COX-2 selective depressant - Google Patents

A kind of crystal form and preparation method thereof of COX-2 selective depressant Download PDF

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Publication number
CN109678775A
CN109678775A CN201811205923.5A CN201811205923A CN109678775A CN 109678775 A CN109678775 A CN 109678775A CN 201811205923 A CN201811205923 A CN 201811205923A CN 109678775 A CN109678775 A CN 109678775A
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crystal form
crystallization
iii
formula
characteristic peak
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CN109678775B (en
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周先强
杜振兴
王立坤
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Jiangsu Hengrui Medicine Co Ltd
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Jiangsu Hengrui Medicine Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D207/00Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D207/02Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D207/30Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members
    • C07D207/34Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members 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
    • C07D207/36Oxygen or sulfur atoms
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P29/00Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00Antineoplastic agents
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07BGENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B2200/00Indexing scheme relating to specific properties of organic compounds
    • C07B2200/13Crystalline forms, e.g. polymorphs

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Pharmacology & Pharmacy (AREA)
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  • Pain & Pain Management (AREA)
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  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The present invention relates to a kind of selective crystal forms of cox 2 inhibitor and preparation method thereof.Specifically, the present invention relates to II, III crystal forms of a kind of selective cox 2 inhibitor and preparation method thereof.The dynamic solubility of II crystal form and III crystal form of the invention in physiological correlations medium is better than in water.

Description

A kind of crystal form and preparation method thereof of COX-2 selective depressant
Technical field
The present invention relates to crystal forms of COX-2 selective depressant and preparation method thereof.
Background technique
Epoxidase (cyclo-oxygen-ase, COX) is enzyme necessary to prostaglandin (PGs) is synthesized and PGs synthesis Key rate-limiting enzyme in initial step.There are two types of isodynamic enzyme COX-1 and COX-2 by COX, the former is referred to as element enzyme for structural type Or house keeping enzyme, it is primarily present in the tissue such as blood vessel, stomach, kidney, domestic and foreign scholars generally believe that the PG that it is generated is participating in body just Normal physiology course and defencive function such as maintain gastrointestinal mucosa integrality, adjust platelet function and renal hemodynamic;The latter is induction Type is through stimulating the induced enzyme generated rapidly, when by inflammatory cytokine, growth factor, endotoxin and certain mitogens When stimulation, the expression of COX-2 can be increased significantly.
US2004029951A discloses a kind of 3,4- diphenyl 2 containing sulfonyl, and 5- pyrrolin -2- ketone is derivative Object, the analog derivative have preferable COX-2 selective inhibitory, and wherein formula (A) is a kind of non-steroidal anti-inflammatory analgesics, use In the pain symptom of relief from osteoarthritis, structure is as follows:
The crystal form of medicinal active ingredient often influences the chemically and physically stability of the drug, crystallization condition and storage item The difference of part is likely to result in the variation of the crystal structure of compound, sometimes can also be along with the crystal form for generating other forms.One As for, unbodied drug products do not have well-regulated crystal structure, often have defect, for example product stability is poor, mistake It is more difficult to filter, and easily agglomerates, poor fluidity etc..CN101774958A discloses formula (A) compound " N- n-propyl -3- (4- methylbenzene Base) -4- (4- methanesulfonylphenYl) -2,5- pyrrolin -2- ketone " I crystal, we have found II, III crystalline substance again on this basis Type.
Summary of the invention
The technical problem to be solved in the present invention is to provide formula (A) compound N-n-propyl -3- (4- aminomethyl phenyl) -4- (4- MethanesulfonylphenYl) -2,5- pyrrolin -2- ketone novel crystal forms and preparation method thereof.
Technical scheme is as follows:
The present invention provides a kind of II crystal form of compound shown in formula (A), it is characterised in that: X-ray powder diffraction collection In, it is to have feature at 6.54,10.27,11.72,13.21,14.52,15.03,16.32,17.00,18.89,19.70 in 2 θ Peak, error range can be ± 0.3, ± 0.2 or ± 0.1,
Preferably, II crystal form 6.54,10.27,11.72,13.21,14.52,15.03,16.32,17.00, 18.89, there is characteristic peak at 19.70,20.65,21.72,22.23,23.71,24.56, error range can be ± 0.3, ± 0.2 Or ± 0.1.
It is furthermore preferred that II crystal form is 6.54,10.27,11.72,13.21,14.52,15.03,16.32,17.00, 18.89, there is spy at 19.70,20.65,21.72,22.23,23.71,24.56,25.60,29.53,31.33,36.70,43.51 Peak is levied, error range can be ± 0.3, ± 0.2 or ± 0.1.
It is furthermore preferred that II crystal form is 6.537,10.271,11.723,13.209,14.525,15.033,16.319, 16.997、18.891、19.703、20.650、21.715、22.231、23.710、24.557、25.595、29.533、31.329、 36.703, there is characteristic peak at 43.512, error range can be ± 0.3, ± 0.2 or ± 0.1.
The present invention provides a kind of III crystal form of compound shown in formula (A), it is characterised in that: X-ray powder diffraction collection In, it is to have spy at 5.90,8.59,9.27,9.56,13.13,15.21,15.49,16.60,17.50,18.10,19.42 in 2 θ Peak is levied, error range can be ± 0.3, ± 0.2 or ± 0.1.
Preferably, III crystal form 5.90,8.59,9.27,9.56,13.13,15.21,15.49,16.60,17.50, 18.10, there is characteristic peak at 19.42,20.29,21.31,21.50,22.30,23.45,24.24, error range can be ± 0.3, ± 0.2 or ± 0.1.
It is furthermore preferred that III crystal form is 5.90,8.59,9.27,9.56,13.13,15.21,15.49,16.60, 17.50、18.10、19.42、20.29、21.31、21.50、22.30、23.45、24.24、25.29、26.36、26.66、 27.62, there is characteristic peak at 29.27,30.49,33.56,35.39,40.94,43.72,46.67, error range can be ± 0.3, ± 0.2 or ± 0.1.
It is furthermore preferred that III crystal form is 5.895,8.594,9.273,9.556,13.133,15.207,15.491, 16.604、17.500、18.104、19.418、20.291、21.314、21.497、22.298、23.448、24.236、25.287、 26.362, there is feature at 26.661,27.622,29.274,30.488,33.565,35.387,40.940,43.717,46.666 Peak, error range can be ± 0.3, ± 0.2 or ± 0.1.
The present invention also provides a kind of methods for preparing II crystal form, it is characterised in that: compound shown in formula (A) is dissolved in two Chloromethanes crystallization, preferably cooling crystallization, most preferably program cooling crystallization.The present invention provides a kind of method for preparing II crystal form, It is characterized by: compound shown in formula (A) is dissolved in methylene chloride, rate of temperature fall is 1.5K/min or 0.2K/min, crystallization Temperature is -5 DEG C;Or it is 25 DEG C that rate of temperature fall, which is 1.5K/min crystallization temperature,.
The present invention also provides a kind of methods for preparing III crystal form, it is characterised in that: compound shown in formula (A) is dissolved in three Chloromethanes crystallization precipitates crystal or is stored at room temperature crystallization, most preferably program cooling crystallization after preferably cooling down.The present invention provides one The method that kind prepares III crystal form, it is characterised in that: compound shown in formula (A) is dissolved in chloroform, rate of temperature fall 1.5K/ Min or 0.2K/min, crystallization temperature are -5 DEG C;Or it is 25 DEG C that rate of temperature fall, which is 0.2K/min crystallization temperature,.
Inventor has attempted suspension rotating crystal method, in EtOH, H2O, MTBE, IPA, Heptane, 10% (V/V) H2O- EtOH, 5% (V/V) H2O-IPA, MeOH, THF, ACE, Dioxane, EA, ACN multi-solvents system, 50 DEG C and 25 DEG C of two kinds of temperature Degree condition) under I crystal is prepared.Inventor has attempted anti-solvent method, acetic acid-H2O, acetic acid-EtOH, acetic acid- IPAC, acetic acid-MTBE, acetic acid-hexamethylene, acetic acid-IPA, acetic acid-Heptane, CH2Cl2—EtOH、CH2Cl2— IPAC、CH2Cl2—MTBE、CH2Cl2- hexamethylene, CH2Cl2—IPA、CH2Cl2—Heptane、CHCl3—EtOH、CHCl3— IPAC、CHCl3—MTBE、CHCl3- hexamethylene, CHCl3—IPA、CHCl3—Heptane、DMF—H2O、DMF—EtOH、 DMF—IPAC、DMF—MTBE、DMF—IPA、THF—H2O, THF-ETOH, THF-IPAC, THF-MTBE, THF-hexamethylene Alkane, THF-IPA, THF-Heptane, Dioxane-EtOH, Dioxane-H2O、Dioxane—IPAC、Dioxane— MTBE, Dioxane-hexamethylene, Dioxane-IPA, Dioxane-Heptane, Acetone-EtOH, Acetone- IPAC, Acetone-MTBE, Acetone-hexamethylene, Acetone-IPA, Acetone-H2O、Acetone—Heptane、 MIBK—H2O, MIBK-ETOH, MIBK-IPAC, MIBK-MTBE, MIBK-IPA, MIBK-hexamethylene, MIBK- HEPTANE、EA—H2O, EA-EtOH, EA-IPAC, EA-MTBE, EA-IPA, EA-hexamethylene, EA-Heptane, MeOH—H2O, the multi-solvents system such as MeOH-EtOH, MeOH-IPAC, MeOH-MTBE, MeOH-IPA, obtains I crystal Or crystal form is not obtained.Inventor has attempted volatility process, DCM, CHCl3, acetic acid, THF, Acetone, Dioxane, EA, MeOH etc. Multi-solvents system obtains crystal form I.Inventor has attempted melting rotating crystal method, DSC as the result is shown rate of temperature fall be 20K/min, When 10K/min, 2K/min, 1K/min, turn brilliant peak without heat release in temperature-fall period, only when rate of temperature fall is 5K/min It waits, exothermic peak occurs, 5K/min crystal belongs to brilliant I to XRD as the result is shown, and finally obtained solid is nothing to remaining rate of temperature fall Sizing.Inventor has attempted crystallisation by cooling method, rate of temperature fall be 1.5K/min, crystallization temperature be -5 DEG C when, DMF, acetic acid, DMSO, THF, Dioxane, Acetone, butanone, ACN, 10% (V/V) H2O-ACN, MIBK, EA, MeOH, 10% (V/V) H2O- It in the multi-solvents system such as MeOH, obtains I crystal or cannot get crystal form, only obtained II crystal form, CHCl in DCM system3Body III crystal form has been obtained in system.Inventor has attempted crystallisation by cooling method, is 0.2K/min in rate of temperature fall, crystallization temperature is -5 DEG C When, DMF, THF, Acetone, butanone, ACN, 10% (V/V) H2O-ACN, MIBK, EA, MeOH, 10% (V/V) H2O-MeOH etc. It in multi-solvents system, obtains I crystal or cannot get crystal form, only obtained II crystal form, CHCl in DCM system3In system III crystal form is arrived.Inventor has attempted crystallisation by cooling method, when rate of temperature fall is 1.5K/min, and crystallization temperature is 25 DEG C, CHCl3, DMF, acetic acid, THF, Dioxane, Acetone, ACN, 10% (V/V) H2The multi-solvents such as O-ACN, MIBK, EA, MeOH It in system, obtains I crystal or cannot get crystal form, only obtained II crystal form in DCM system.Inventor has attempted crystallisation by cooling Method, when rate of temperature fall is 0.2K/min, and crystallization temperature is 25 DEG C, DCM, DMF, THF, Dioxane, Acetone, ACN, 10% (V/V)H2In the multi-solvents system such as O-ACN, EA, MeOH, obtains I crystal or cannot get crystal form, only CHCl3It is obtained in system III crystal form.
The invention further relates to the pharmaceutical composition of II crystal form, described pharmaceutical composition include II crystal form with it is pharmaceutically acceptable Carrier, diluent or excipient.
The invention further relates to the pharmaceutical composition of III crystal form, described pharmaceutical composition include III crystal form with it is pharmaceutically acceptable Carrier, diluent or excipient.
The invention further relates to a kind of methods for preparing pharmaceutical composition, including connect II crystal form pharmaceutically can at least one Carrier, diluent or the excipient mixing received.
The invention further relates to a kind of methods for preparing pharmaceutical composition, including connect III crystal form pharmaceutically can at least one Carrier, diluent or the excipient mixing received.
The invention further relates to the pharmaceutical composition comprising II crystal form and/or III crystal form preparation treatment and/or prevention with Purposes in the drug of the related disease of COX-2 or illness, the disease or illness are selected from inflammation, pain, fever, cancer.
The invention further relates to pharmaceutical compositions prepared by II crystal form of application and/or III crystal form to treat and/or prevent in preparation Purposes in the drug of disease related with COX-2 or illness, the disease or illness are selected from inflammation, pain, fever, cancer.
By X-ray powder diffraction collection (XRPD), differential scanning calorimetric analysis (DSC) to acquired formula (A) shownization II, III crystal form for closing object carries out structure determination, crystal form research.
Starting material used in crystal form preparation method of the present invention can be compound shown in any form of formula (A), tool Body form includes but is not limited to: unformed, any crystal form etc..
Detailed description of the invention
In the description and claims of this application, unless otherwise stated, science used herein and skill Art noun has the normally understood meaning of those skilled in the art institute.However, for a better understanding of the present invention, being provided below The definition and explanation of part relational language.In addition, as the definition and explanation of term provided herein and those skilled in the art When the normally understood meaning of member institute is inconsistent, with the definition of term provided herein and it is construed to quasi-.
" X-ray powder diffraction collection or XRPD " of the present invention refers to according to bragg's formula 2d sin θ=n λ (in formula, λ is the wavelength of X-ray,The series n of diffraction is any positive integer, generally takes first-order diffraction peak, n= 1), when X-ray is incident on a certain of crystal or partial crystals sample with sweep angle θ (complementary angle of incidence angle, also known as Bragg angle) When on the atomic plane with d lattice plane spacing, it is just able to satisfy Bragg equation, to measure this group of X-ray powder diffraction Figure.
" differential scanning calorimetric analysis or DSC " of the present invention refers in sample heating or thermostatic process, measures sample Temperature difference, differential heat flow between product and reference substance are obtained with characterizing all physical changes related with fuel factor and chemical change The transformation information of sample.
" 2 θ or 2 θ angles " of the present invention refer to the angle of diffraction, and θ is Bragg angle, and unit is ° or degree the error model of 2 θ Enclosing is ± 0.1~± 0.5, preferably ± 0.1~± 0.3, more preferably ± 0.2.
" SGF " of the present invention, " FESSIF ", " FASSIF " respectively refer to the simulate the gastric juice containing pepsin, simulation Gastric juice under the postprandial fed state of the mankind under enteral intestinal juice, the simulation mankind's starvation when empty stomach.
The invention further relates to II and/or III crystal forms and optional one kind or more including formula (A) compound represented The pharmaceutical composition of kind pharmaceutical carrier and/or diluent.Described pharmaceutical composition can be made pharmaceutically acceptable any dose Type.For example, the pharmaceutical preparation of II and/or III crystal form of formula (A) compound represented of the invention can be formulated as tablet, capsule Agent, pill, granule, solution, suspension, syrup, injection (including injection, injection sterile powder and injection Concentrated solution), suppository, inhalant or spray.
In addition, pharmaceutical composition of the present invention can also with any suitable administration mode, such as oral, parenteral, The modes such as rectum, transpulmonary or local administration are applied to the patient or subject for needing this treatment.When being used to be administered orally, institute Stating pharmaceutical composition can be made into oral preparation, such as oral solid formulation, such as tablet, capsule, pill, granule;Or mouth Take liquid preparation, such as oral solution, oral suspensions, syrup.When oral preparation is made, the pharmaceutical preparation may be used also Include suitable filler, adhesive, disintegrating agent, lubricant etc..When being used for parenteral administration, the pharmaceutical preparation be can be made into Injection, including injection, injection sterile powder and concentrated solution for injection.When injection is made, described pharmaceutical composition The conventional method in existing pharmaceutical field can be used to be produced.It, can not in the pharmaceutical preparation when preparing injection Additives are added, suitable additives can also be added according to the property of drug.When being used for rectally, the pharmaceutical preparation can Suppository etc. is made.When for transpulmonary administration, the pharmaceutical preparation can be made into inhalant or spray etc..In certain preferred implementations In scheme, II and/or III crystal form of formula of the invention (A) compound represented is to treat and/or prevention effective dose is present in medicine In compositions or drug.In certain preferred aspects, II and/or the III of formula (A) compound represented is brilliant Type is present in pharmaceutical composition or drug in the form of unit dose.
Formula (A) compound ii and/or III crystal form can be used for preparing treatment disease related with COX-2 or illness Purposes in drug.Therefore, the application further relates to, and II and/or III crystal form of formula (A) compound is used to prepare drug Purposes, the drug are used to treat the purposes in the drug of disease related with COX-2.In addition, the application further relates to, a kind of suppression The method for making disease related with cyclooxygenase comprising apply treatment and/or prevention effective dose to subject with this need Formula (A) compound II and/or III crystal form or pharmaceutical composition of the invention.
In certain preferred aspects, the disease is selected from inflammation, pain, fever, cancer.
Detailed description of the invention
Fig. 1 is the XRPD map of compound ii crystal form shown in formula (A).
Fig. 2 is the DSC map of compound ii crystal form shown in formula (A).
Fig. 3 is the XRPD map of compound III crystal form shown in formula (A).
Fig. 4 is the DSC map of compound III crystal form shown in formula (A).
Fig. 5 is the concentration changes with time of II, III crystal form in water.
Fig. 6 is concentration changes with time of II, III crystal form in SGF.
Fig. 7 is concentration changes with time of II, III crystal form in FESSIF.
Fig. 8 is concentration changes with time of II, III crystal form in FASSIF.
Specific embodiment
The present invention is explained in greater detail below with reference to embodiment, the embodiment of the present invention is merely to illustrate skill of the invention Art scheme, and non-limiting the spirit and scope of the invention.
Experiment test equipment used
1, differential scanning calorimeter (Differential Scanning Calorimeter, DSC)
Instrument model: Mettler Toledo DSC 3+STARe System
Purge gass: nitrogen
Heating rate: 10.0 DEG C/min
Temperature range: 25-350
2, x-ray diffraction pattern (X-ray Powder Diffraction, XRPD)
Instrument model: Bruker D8 Discover A25 X-ray powder diffraction instrument
Ray: monochromatic Cu-K alpha ray (λ=1.5406)
Scanning mode: the θ of θ/2, scanning range: 10-48 °
Voltage: 40KV, electric current: 40mA
The preparation of embodiment 1, II crystal form
Modus ponens (A) compound 1g is added in reaction flask, and methylene chloride (2mL) is added and is stirred to dissolve.Reaction flask is placed In heating and cooling device, according to temperature parameter setting in table 1, stirring rate 1000rpm is being cooled to -5 with 0.2 DEG C/min 30min starts that solid is precipitated after DEG C, and product is filtered drying.The X-ray powder diffraction spectrogram (XRPD map) of the crystallized sample See that Fig. 1, DSC spectrogram are shown in Fig. 2, has sharp melting endothermic peak at about 183.5 DEG C, this crystal form is defined as II crystal form, 2 θ features Peak position is as shown in table 2 below:
Table 1, temperature parameter
Table 2, II crystal form characteristic peak
The preparation of embodiment 2, III crystal form
Modus ponens (A) compound (1g) is added in reaction flask, and chloroform (4ml) is added and is stirred to dissolve, is stored at room temperature, A large amount of solids are precipitated, filter.The X-ray powder diffraction spectrogram (XRPD map) of the crystallized sample is shown in that Fig. 3, DSC spectrogram are shown in Fig. 4, There is sharp melting endothermic peak at about 183.7 DEG C, this crystal form be defined as III crystal form, 2 θ characteristic peak positions are as shown in table 3 below:
Table 3, III crystal form characteristic peak
The preparation of embodiment 3, III crystal form
Modus ponens (A) compound (1g) is added in reaction flask, and chloroform (4ml) is added and is stirred to dissolve, is cooled to -5 After DEG C, solid is precipitated, filters, obtains III crystal form.
Embodiment 4, II/III crystal form dynamic solubility
1, it weighs 30mg sample II/III crystal form respectively to be placed in intrinsic dissolution rate metal module, in 140 pounds of pressure Under the conditions of keep 30s, be made dissolution sample;
2, the water of 10ml, SGF, FESSIF, FASSIF is taken to be placed in dissolution bottle respectively, 37 DEG C of heat preservations;
3, each crystal form is placed in above-mentioned 4 kinds of media respectively, revolving speed 100rpm, 5,15,30,45,60,90, The separately sampled measurement concentration of 120min.
The dynamic solubility of II crystal form and III crystal form in physiological correlations medium is better than in water.In water and In FESSIF, crystal form II dynamic solubility behavior is better than crystal form III, and in SGF and FASSIF, crystal form III is slightly excellent.

Claims (11)

1. II crystal form of compound shown in formula (A), it is characterised in that: in X-ray powder diffraction collection, 2 θ be 6.54, 10.27, there is characteristic peak at 11.72,13.21,14.52,15.03,16.32,17.00,18.89,19.70,
2. II crystal form as described in claim 1, which is characterized in that II crystal form 6.54,10.27,11.72,13.21, 14.52, there is characteristic peak at 15.03,16.32,17.00,18.89,19.70,20.65,21.72,22.23,23.71,24.56.
3. II crystal form as described in claim 1, which is characterized in that II crystal form 6.54,10.27,11.72,13.21, 14.52、15.03、16.32、17.00、18.89、19.70、20.65、21.72、22.23、23.71、24.56、25.60、 29.53, there is characteristic peak at 31.33,36.70,43.51.
4. III crystal form of compound shown in formula (A), it is characterised in that: in X-ray powder diffraction collection, 2 θ be 5.90, 8.59, there is characteristic peak at 9.27,9.56,13.13,15.21,15.49,16.60,17.50,18.10,19.42.
5. III crystal form as claimed in claim 4, which is characterized in that III crystal form 5.90,8.59,9.27,9.56, 13.13、15.21、15.49、16.60、17.50、18.10、19.42、20.29、21.31、21.50、22.30、23.45、24.24 There is characteristic peak at place.
6. III crystal form as claimed in claim 4, which is characterized in that III crystal form 5.90,8.59,9.27,9.56, 13.13、15.21、15.49、16.60、17.50、18.10、19.42、20.29、21.31、21.50、22.30、23.45、 24.24, there is spy at 25.29,26.36,26.66,27.62,29.27,30.49,33.56,35.39,40.94,43.72,46.67 Levy peak.
7. a kind of method for preparing II crystal form as described in any one of claim 1-3, it is characterised in that: by formula (A) shownization It closes object and is dissolved in methylene chloride crystallization, Crystallization method is selected from room temperature crystallization, cooling crystallization, solvent flashing crystallization or addition crystal seed and lures Crystallization is led, preferably cooling crystallization, most preferably program cooling crystallization.
8. the method for II crystal form of preparation as claimed in claim 7, the detailed process of program cooling crystallization are as follows: formula (A) compound It is added in reaction flask, methylene chloride is added and is stirred to dissolve, reaction flask is placed in heating and cooling device, and stirring rate is 1000rpm, temperature parameter setting are as follows:
By the filtering of obtained crystal, drying.
9. a kind of method for preparing III crystal form as described in any one of claim 4-6, it is characterised in that: by formula (A) shownization It closes object and is dissolved in chloroform crystallization, Crystallization method is selected from room temperature crystallization, cooling crystallization, solvent flashing crystallization or addition crystal seed and lures Crystallization is led, preferably cooling crystallization or is stored at room temperature crystallization, most preferably program cools down crystallization.
10. II crystal form and at least one pharmaceutically acceptable carrier, diluent or tax as described in any one of claim 1-3 The method that shape agent is mixed with pharmaceutical composition.
11. III crystal form and at least one pharmaceutically acceptable carrier, diluent or tax as described in any one of claim 4-6 The method that shape agent is mixed with pharmaceutical composition.
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Citations (4)

* Cited by examiner, † Cited by third party
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