WO2020011258A1 - 稠合三环γ-氨基酸衍生物的盐的晶型及制备和应用 - Google Patents

稠合三环γ-氨基酸衍生物的盐的晶型及制备和应用 Download PDF

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WO2020011258A1
WO2020011258A1 PCT/CN2019/095857 CN2019095857W WO2020011258A1 WO 2020011258 A1 WO2020011258 A1 WO 2020011258A1 CN 2019095857 W CN2019095857 W CN 2019095857W WO 2020011258 A1 WO2020011258 A1 WO 2020011258A1
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acid
compound
formula
ray powder
diffraction pattern
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PCT/CN2019/095857
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French (fr)
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李瑶
石宗军
史少辉
李升�
严庞科
郑伟
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四川海思科制药有限公司
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/185Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
    • A61K31/19Carboxylic acids, e.g. valproic acid
    • A61K31/195Carboxylic acids, e.g. valproic acid having an amino group
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00Drugs for disorders of the nervous system
    • A61P25/04Centrally acting analgesics, e.g. opioids
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00Drugs for disorders of the nervous system
    • A61P25/06Antimigraine agents
    • 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]
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C229/00Compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C229/02Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton
    • C07C229/28Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being saturated and containing rings

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  • the present invention relates to the field of medicine, in particular to the crystal form of a salt of a fused tricyclic ⁇ -amino acid derivative, and preparation and application thereof.
  • the voltage-gated calcium channel is composed of ⁇ 1 subunit and auxiliary protein ⁇ 2 ⁇ , ⁇ , ⁇ subunits.
  • ⁇ 2 ⁇ protein can regulate the density of calcium channels and voltage-dependent kinetics of calcium channels (Felix et al. (199) J. Neuroscience 17: 6884-6891; Klugbauer et al. (1999) J. Neuroscience 19: 684-691; Hobom et et. al (2000) Eur. J. Neuroscience 12: 1217-1226; and Qin et al (2002) Mol. Pharmacol. 62: 485-496).
  • the purpose of the present invention is to provide a fused tricyclic ⁇ -amino acid derivative with novel structure and good medicinal effect, a pharmaceutical composition thereof and its use in the field of analgesia.
  • the fused tricyclic ⁇ -amino acid derivative of the invention has good stability, convenient oral administration, good solubility and bioavailability.
  • the object of the present invention is to provide a crystal of a fused tricyclic ⁇ -amino acid derivative with novel structure and good medicinal effect, a pharmaceutical composition thereof and its use in the field of analgesia.
  • the crystal of the present invention has easy processing and crystallization, handling, good stability, convenient oral administration, good solubility and bioavailability.
  • Another object of the present invention is to provide a method for preparing the fused tricyclic ⁇ -amino acid derivative or / and crystal.
  • Another object of the present invention is to provide a pharmaceutical composition containing the fused tricyclic ⁇ -amino acid derivative or / and crystal.
  • Another object of the present invention is to provide the application of the fused tricyclic ⁇ -amino acid derivative or / and crystal.
  • the present invention provides a compound represented by formula (I)
  • Y is selected from maleic acid, fumaric acid, hydrohalic acid, sulfuric acid, phosphoric acid, L-tartaric acid, citric acid, L-malic acid, maleic acid, D-glucuronic acid, glycolic acid, mucinic acid, succinic acid, lactic acid , Orotic acid, pamoic acid, malonic acid, gentisic acid, oxalic acid, glutaric acid or saccharin, preferably maleic acid, fumaric acid, hydrobromic acid or hydrochloric acid.
  • the compound of the present invention wherein Y is hydrochloric acid, the compound preferably uses Cu-K ⁇ radiation, and its X-ray powder diffraction pattern has characteristic diffraction peaks at the following 2 ⁇ positions: 7.59 ° ⁇ 0.2 ° , 14.37 ° ⁇ 0.2 °, 15.21 ° ⁇ 0.2 °, 17.98 ° ⁇ 0.2 °, 19.53 ° ⁇ 0.2 °, 23.61 ° ⁇ 0.2 °, 24.13 ° ⁇ 0.2 °, 29.23 ° ⁇ 0.2 °, 30.64 ° ⁇ 0.2 °.
  • the compound according to the present invention wherein Y is hydrochloric acid, the compound uses Cu-K ⁇ radiation, and its X-ray powder diffraction pattern is shown in FIG. 3.
  • the TGA / DSC chart of the compound is shown in FIG. 4.
  • the compound according to the present invention wherein Y is maleic acid, the compound uses Cu-K ⁇ radiation, and its X-ray powder diffraction pattern is shown in FIG. 5.
  • the TGA / DSC chart of the compound is shown in FIG. 6.
  • the compound of the present invention wherein Y is fumaric acid, the compound preferably uses Cu-K ⁇ radiation, and its X-ray powder diffraction pattern has characteristic diffraction peaks at the following 2 ⁇ positions: 11.33 ° ⁇ 0.2 °, 14.54 ° ⁇ 0.2 °, 15.77 ° ⁇ 0.2 °, 16.31 ° ⁇ 0.2 °, 17.77 ° ⁇ 0.2 °, 19.58 ° ⁇ 0.2 °, 21.49 ° ⁇ 0.2 °, 25.85 ° ⁇ 0.2 °, 28.33 ° ⁇ 0.2 ° .
  • the compound according to the present invention wherein Y is fumaric acid, the compound uses Cu-K ⁇ radiation, and its X-ray powder diffraction pattern is shown in FIG. 7.
  • the TGA / DSC chart of the compound is shown in FIG. 8.
  • the compound of the present invention wherein Y is hydrobromic acid, it is preferred that the compound uses Cu-K ⁇ radiation, and its X-ray powder diffraction pattern has characteristic diffraction peaks at the following 2 ⁇ positions: 7.58 ° ⁇ 0.2 °, 15.18 ° ⁇ 0.2 °, 17.81 ° ⁇ 0.2 °, 19.37 ° ⁇ 0.2 °, 22.87 ° ⁇ 0.2 °, 23.49 ° ⁇ 0.2 °, 24.12 ° ⁇ 0.2 °, 29.12 ° ⁇ 0.2 °, 30.64 ° ⁇ 0.2 ° .
  • the compound according to the present invention wherein Y is hydrobromic acid, the compound uses Cu-K ⁇ radiation, and its X-ray powder diffraction pattern is shown in FIG. 9.
  • the crystal purity of the compound is greater than 70%, preferably greater than 80%, and more preferably greater than 90%.
  • the crystal of the compound described herein refers to a crystal whose X-ray powder pattern conforms to the above characteristics of the present invention.
  • the present invention also provides a method for preparing the compound, wherein the method further comprises the preparation of a compound represented by formula (I), including: using the compound represented by formula (II) and Y as raw materials to prepare To obtain a compound represented by formula (I);
  • Y is an acid, preferably maleic acid, fumaric acid, hydrohalic acid, sulfuric acid, phosphoric acid, L-tartaric acid, citric acid, L-malic acid, maleic acid, D-glucuronic acid, glycolic acid, mucic acid, succinic acid Lactic acid, orotic acid, pamoic acid, malonic acid, gentisic acid, oxalic acid, glutaric acid or saccharin,
  • the hydrohalic acid is preferably hydrobromic acid or hydrochloric acid, more preferably maleic acid, fumaric acid, Hydrobromic acid or hydrochloric acid.
  • the method includes the steps of: recrystallizing the compound represented by formula (I) in a suitable organic solvent to obtain the compound.
  • the appropriate organic solvent is selected from one of ethyl acetate, acetone, and tetrahydrofuran or a mixture of water-miscible solvent and water.
  • the appropriate organic solvent is selected from a mixed solution of tetrahydrofuran and water, ethyl acetate, or acetone.
  • the method includes the steps of: mixing the compound represented by formula (I) with a suitable organic solvent to form a suspension, stirring for 1-4 days, and filtering to obtain the crystals.
  • the method further comprises the preparation of a compound represented by formula (I), including: using the compound represented by formula (II) and Y as raw materials, and stirring in an appropriate organic solvent to obtain A compound represented by formula (I).
  • the appropriate organic solvent is selected from one or more of ethyl acetate, acetone, tetrahydrofuran, and water.
  • the appropriate organic solvent is selected from a mixed solution of tetrahydrofuran and water, or ethyl acetate or acetone.
  • the present invention also provides a method for preparing the compound (II), wherein the method includes the preparation of a compound represented by formula (I), including:
  • a compound represented by formula (IV) undergoes a reduction reaction in the presence of a reducing agent to prepare a compound represented by formula (V);
  • the present invention also provides a compound represented by formula (V) or an optical isomer thereof:
  • the present invention also provides a crystal of a compound represented by formula (III), which uses Cu-K ⁇ radiation, and its X-ray powder diffraction pattern has characteristic diffraction peaks at the following 2 ⁇ positions: 9.72 ° ⁇ 0.2 °, 14.00 ° ⁇ 0.2 °, 16.33 ° ⁇ 0.2 °, 19.32 ° ⁇ 0.2 °, 20.46 ° ⁇ 0.2 °, 21.69 ° ⁇ 0.2 °, 25.33 ° ⁇ 0.2 °;
  • the crystal of the compound represented by formula (III) uses Cu-K ⁇ radiation, and its X-ray powder diffraction pattern further has characteristic diffraction peaks at the following 2 ⁇ positions: 11.21 ⁇ 0.2 °, 15.16 ⁇ 0.2 °, 18.87 ⁇ 0.2 °, 19.88 ⁇ 0.2 °, 23.47 ⁇ 0.2 °, 27.96 ⁇ 0.2 °.
  • the crystal of the compound represented by formula (III) uses Cu-K ⁇ radiation, and its X-ray powder diffraction pattern further has characteristic diffraction peaks at the following 2 ⁇ positions: 21.30 ⁇ 0.2 °, 25.40 ⁇ 0.2 °, 29.82 ⁇ 0.2 ° .
  • the crystal of the compound represented by formula (III) uses Cu-K ⁇ radiation, and its X-ray powder diffraction pattern is shown in FIG. 1.
  • the TGA / DSC spectrum of the crystal of the compound represented by formula (III) is shown in FIG. 2.
  • the present invention also provides a pharmaceutical composition, wherein the pharmaceutical composition contains a therapeutically effective amount of the compound or crystal according to any one of the above of the present invention, and a pharmaceutically acceptable excipient.
  • the present invention also provides the use of the above-mentioned compounds, crystals and pharmaceutical compositions in the manufacture of a medicament for the treatment and / or prevention of pain.
  • the present invention also provides a method for treating and / or preventing pain, the method comprising administering a therapeutically effective amount of the above-mentioned compound, crystal, and pharmaceutical composition.
  • the pain includes: postherpetic neuralgia, trigeminal neuralgia, migraine, pain associated with osteoarthritis or joint rheumatism, lower back pain, sciatica, toothache, Burn-induced pain, pain caused by diabetic neuropathy, pain caused by chemotherapy-induced neuropathy, HIV-related neuralgia, AIDS-related neuralgia, cancer-related neuralgia or non-neuralgia, acute or Chronic tension headache, postoperative pain, or fibromyalgia.
  • the X-ray powder diffraction, DSC pattern, and TGA pattern disclosed in the present invention which are substantially the same, also belong to the scope of the present invention.
  • a “therapeutically effective amount” refers to the amount of a compound that causes a physiological or medical translation of a tissue, system, or subject, which amount is sought, and includes one or more sufficient to prevent a treated condition or disorder when administered to a subject. Amount of compound where several symptoms occur or alleviate it to some degree.
  • IC 50 refers to the half maximal inhibitory concentration, refers to the maximum concentration at which half of the inhibitory effect.
  • the crystalline structure of the present invention can be analyzed using various analytical techniques known to those of ordinary skill in the art, including, but not limited to, X-ray powder diffraction (XRD), differential scanning calorimetry (DSC), and / or thermogravimetric analysis (Thermogravimetric Analysis, TGA). Thermogravimetric Analysis (TGA), also known as Thermogravimetry (TG).
  • XRD X-ray powder diffraction
  • DSC differential scanning calorimetry
  • TGA thermogravimetric analysis
  • TGA Thermogravimetric Analysis
  • TG Thermogravimetry
  • crystal form of the present invention is not limited to the feature maps that are exactly the same as the feature maps described in the drawings disclosed in the present invention, such as XRD, DSC, TGA, which have substantially the same maps as those described in the drawings or Any crystal form of a substantially identical feature map falls within the scope of the present invention.
  • the crystal form disclosed in the present invention can be prepared by the following common methods for preparing a crystal form:
  • the volatilization experiment is to open the sample clear solution at different temperatures until the solvent dries.
  • the cooling crystallization experiment is to dissolve a certain amount of sample into the corresponding solvent at high temperature, and then directly crystallize by stirring at room temperature or low temperature.
  • the polymer template experiment is to add different kinds of polymer materials to the sample clarification solution, and leave it open at room temperature until the solvent dries.
  • Thermal method experiment is to treat the sample according to certain thermal method crystallization conditions and cool to room temperature.
  • the water vapor diffusion experiment is to place the sample in a certain humidity environment at room temperature.
  • FIG. 1 is an XRD of a benzenesulfonate crystal form of Compound 1.
  • FIG. 2 is a TGA / DSC of the benzenesulfonate crystal form of Compound 1.
  • FIG. 3 is an XRD of the hydrochloride crystal form of Compound 1.
  • FIG. 4 is a TGA / DSC of the hydrochloride crystal form of Compound 1.
  • FIG. 5 is an XRD of the maleate crystal form of Compound 1.
  • Figure 6 shows the TGA / DSC of the maleate crystal form of Compound 1.
  • FIG. 7 is an XRD of the fumarate crystal form of Compound 1.
  • FIG. 8 is a TGA / DSC of the fumarate crystal form of Compound 1.
  • FIG. 9 is an XRD of the hydrobromide crystal form of Compound 1.
  • FIG. 10 is a TGA / DSC of the hydrobromide crystal form of Compound 1.
  • FIG. 12 is an XRD of the maleate crystal forms of Compound 1 at 25 ° C / 60% RH and 40 ° C / 75% RH.
  • Step 5 ( ⁇ ) (1'R, 3'S, 6'S) -spiro [[1,3] dioxolane-2,2'-tricyclo [4.2.1.0 3,8 ] nonane] -7 ' -Ketone (1f):
  • Step 6 ( ⁇ ) (1'R, 3'S, 6'S) -spiro [[1,3] dioxolane-2,2'-tricyclo [4.2.1.0 3,8 ] nonane] (1g) :
  • Step 7 ( ⁇ ) (1R, 3S, 6R, 8R) -tricyclo [4.2.1.0 3,8 ] nonan-2-one (1h):
  • Step 8 ( ⁇ ) ethyl-2-((1R, 3S, 6R, 8R) -tricyclo [4.2.1.0 3,8 ] nonane-2-ylidene) acetate (1i):
  • Step 1 (1'S, 2'S, 3'R, 6'S, 8'S) -spiro [pyrrolidine-3,2'-tricyclo [4.2.1.03,8] nonane] -5-one (1k-1):
  • the XPRD pattern of the product is shown in Figure 1, and the TGA / DSC pattern is shown in Figure 2.
  • the single crystal diffraction pattern is shown in FIG. 17.
  • the XRD pattern of the product is shown in Figure 5, and the TGA / DSC pattern is shown in Figure 6.
  • the XRD pattern of the product is shown in Figure 7, and the TGA / DSC pattern is shown in Figure 8.
  • the XRD pattern of the product is shown in Figure 9, and the TGA / DSC pattern is shown in Figure 10.
  • the salt formation ratio (acid / free body) was calculated according to the HPLC / IC test results.
  • Cultivation method Put about 100mg of benzenesulfonate of compound 1 into a glass vial, add 0.2mL of water and 0.2mL of dimethyl sulfoxide to 80 ° C and dissolve. After 5 minutes of holding, naturally drop to room temperature to obtain rod crystal (Crystal structure information is shown in Table 3 below).
  • the benzenesulfonate single crystal diffraction pattern of Compound 1 is shown in FIG. 17.
  • PANalytical X-ray diffractometer X'pertpowder type (PANalytical BV, Netherlands), using Cu K ⁇ radiation, (40kV, 40mA), using a PIXcel 1D detector to obtain powder X-ray diffraction patterns, analysis software highscore 3.0e (3.0.5), acquisition software PANalytical Data Collector 4.2.
  • the analysis is typically performed at a scan rate of 0.1094 ° / s over a range of 2 ⁇ angles of 4 ° to 40 ° in steps of 0.013 ° per point. Samples ground to a fine powder upon acceptance are lightly mounted on a custom glass sample plate with grooves and the surface is flattened for testing.
  • the instrument is calibrated weekly with the silicon standard sample piece that comes with the instrument, within a deviation range of 2 ⁇ angle of ⁇ 0.02 °.
  • TGA and DSC spectra were collected on TA Q5000 / 500 thermogravimetric analyzer and TA Q2000 / 200 differential scanning calorimeter. The test parameters are shown in Table 10. Figure 10.
  • the XRD results are shown in Figs. 11 to 15.
  • the evaluation results show that after standing at 25 ° C / 60% RH and 40 ° C / 75% RH for one week, the hydrochloride crystal form (813318-16-A) and the maleate crystal form (813318-16-B)
  • the crystal form of fumarate (813318-16-C), hydrobromide (813318-16-D) and benzenesulfonate (813320-05-A) did not change.
  • the dynamic solubility evaluation at 37 ° C used four mediums: simulated gastric fluid (SGF), fasted intestinal fluid (FaSSIF), simulated full intestinal fluid (FeSSIF), and water.
  • SGF gastric fluid
  • FaSSIF fasted intestinal fluid
  • FeSSIF simulated full intestinal fluid
  • water water
  • about 80 mg of solid was weighed and mixed with 4 ml of medium in a 5 ml glass bottle, placed in a 37 ° C environment and rotated (25 rpm) for 1 hour, 2 hours, 4 hours, and 24 hours.
  • the concentration and pH of the supernatant were tested by HPLC and pH meter, respectively.
  • the crystal form of the lower solids Changes were measured using XRPD. All test results are summarized in Table 12.
  • the test method for concentration was collected on an Agilent 1100 HPLC with high performance liquid chromatography. Use ELSD detector.
  • the specific instruments and test parameters are as follows: Column Welch Xtimate C18, 150 ⁇ 3.0mm, 3.5 ⁇ m; mobile phase, A: 0.05% trifluoroacetic acid aqueous solution B: acetonitrile, gradient elution; time: 20min; flow rate: 0.8ml / min ; Injection volume: 10 ⁇ L; column temperature: 30 ° C; diluent: water; ELSD heating temperature, 60 ° C; ELSD nitrogen flow rate: 1L / min.
  • the gradient elution is shown in Table 11:
  • FC * Form Change
  • NA dissolved in 1 hour, without testing
  • hydrochloride crystal form, maleate crystal form, fumarate crystal form, and hydrobromide crystal form and benzenesulfonate crystal form were almost non-hygroscopic, and the crystal form did not change before and after the DVS test.
  • the results show that the hydrobromide crystal form and hydrochloride crystal form are crystalless, have good physical and chemical stability, have better solubility, and the five crystal forms have almost no hygroscopicity, see Table 13- 1.
  • the rat cerebral cortex tissue was taken in 10 times the volume (w / v) of ice-cold 0.32M sucrose / 5mM Tris-acetic acid (pH 7.4). After homogenization, the synaptic plasma membrane was prepared by sucrose density gradient centrifugation and stored in Tris-acetic acid ( pH 7.4) buffer, resuspend in 10 mM HEPES (pH 7.4) buffer just before use. The test compound was dissolved in 1% DMSO and diluted to a gradient concentration (1 nM-1000 nM), and the synaptic plasma suspension (about 0.05-0.1 mg total protein) was added with 20 nM [3H] gabapentin, and incubated at 25 ° C for 30 minutes.
  • the reaction system was vacuum filtered to a Whatman GFB filter, and the filter was washed 3 times with 5 mL of 100 mM ice-cold sodium chloride solution, and the radioactivity of the filter was measured by liquid scintillation number. Non-specific binding was blocked with 100M gabapentin.
  • the inhibitory rate of the compound on the binding of radiolabeled gabapentin to the synaptic plasma membrane was calculated, and the IC50 of the compound was calculated.
  • the IC 50 of the besylate salt of Compound 1 was 3.96 nM.
  • the benzene sulfonate of compound 1 has a better competitive binding capacity to the calcium channel protein Cav ⁇ 2 ⁇ .
  • the compound of the present invention can significantly inhibit mechanical hyperalgesia caused by spinal nerve ligation in rats.
  • Test animals 12 male SD rats, about 180 to 220 g, 6 to 8 weeks of age, purchased from Chengdu Dashuo Experimental Animal Co., Ltd. Animals were kept in SPF environment, temperature 20-22 °C, relative humidity: 40-70%, 12h / 12h light and dark light, drinking and drinking freely, and the experiment was started after 3 days of adaptive observation.
  • Drug preparation Weigh out a certain amount of test compound accurately, add 0.5% CMC-Na to mill uniformly, and vortex to obtain a suspension solution. All test compounds were prepared fresh immediately before use.

Abstract

提供稠合三环γ-氨基酸衍生物的盐和/或晶型及制备和应用。所述如式( I )所示,其中,Y选自马来酸、富马酸、氢卤酸(优选为氢溴酸和盐酸)、硫酸、磷酸、L-酒石酸、柠檬酸、L-苹果酸、马尿酸、D-葡萄糖醛酸、乙醇酸、粘酸、琥珀酸、乳酸、乳清酸、帕莫酸、丙二酸、龙胆酸、草酸、戊二酸或糖精。

Description

稠合三环γ-氨基酸衍生物的盐的晶型及制备和应用 技术领域
本发明涉及医药领域,具体的说,是涉及稠合三环γ-氨基酸衍生物的盐的晶型及制备和应用。
背景技术
电压门控钙通道由α1亚单位和辅助蛋白α2δ、β、γ亚基共同构成。α2δ蛋白可以调节钙通道的密度及钙通道电压依赖性动力学(Felix et al(199 7)J.Neuroscience 17:6884-6891;Klugbauer et al(1999)J.Neuroscience 19:684-691;Hobom et al(2000)Eur.J.Neuroscience 12:1217-1226;and Qin et al(2002)Mol.Pharmacol.62:485-496)。已经证实,对电压依赖性钙通道亚基α2δ表现出高亲合力结合的化合物可有效治疗疼痛,例如普瑞巴林和加巴喷丁。在哺乳动物中,α2δ蛋白有4个亚型,每个亚型均由不同的基因编码。α2δ亚型1和亚型2与普瑞巴林表现出高亲和力,而α2δ亚型3和亚型4无显著的药物结合力。
然而,对于加巴喷丁,其较大程度改善糖尿病周围神经病变患者病痛的比例约为60%(Acta Neurol.Scand.101:359-371,2000),对于普瑞巴林,虽然其耐受性优于加巴喷丁,但其安全性更低,且有滥用或者使患者产生依赖的可能(Am J Health Syst Pharm.2007;64(14):1475-1482)。
鉴于加巴喷丁和普瑞巴林的局限性,需要开发新的具有更好药效的化合物。
发明内容
本发明的目的是提供一种结构新颖、药效好的稠合三环γ-氨基酸衍生物,其药物组合物以及其在镇痛领域的用途。本发明稠合三环γ-氨基酸衍生物具有稳定性好、便于口服、较好的溶解度和生物利用度。
本发明的目的是提供一种结构新颖、药效好的稠合三环γ-氨基酸衍生物的晶体,其药物组合物以及其在镇痛领域的用途。
本发明的晶体具有易于加工和结晶、处理、稳定性好、便于口服、较好的溶解度和生物利用度。
本发明的另一目的在于提供所述稠合三环γ-氨基酸衍生物或/和晶体的制备方法。
本发明的另一目的在于提供含有所述稠合三环γ-氨基酸衍生物或/和晶体的药物组合物。
本发明的再一目的在于提供所述稠合三环γ-氨基酸衍生物或/和晶体的应用。
本发明提供一种式(I)所示化合物
Figure PCTCN2019095857-appb-000001
其中:
Y选自马来酸、富马酸、氢卤酸、硫酸、磷酸、L-酒石酸、柠檬酸、L-苹果酸、马尿酸、D-葡萄糖醛酸、乙醇酸、粘酸、琥珀酸、乳酸、乳清酸、帕莫酸、丙二酸、龙胆酸、草酸、戊二酸或糖精,优选马来酸、富马酸、氢溴酸或盐酸。
根据本发明所述化合物的一些具体实施方案,其中,氢卤酸为氢溴酸和盐酸。
根据本发明所述化合物的一些具体实施方案,其中,Y为盐酸,优选所述的化合物使用Cu-Kα辐射,其X-射线粉末衍射图谱在以下2θ位置具有特征衍射峰:7.59°±0.2°、14.37°±0.2°、15.21°±0.2°、17.98°±0.2°、19.53°±0.2°、23.61°±0.2°、24.13°±0.2°、29.23°±0.2°、30.64°±0.2°。
根据本发明所述化合物的一些具体实施方案,其中,Y为盐酸,所述的化合物使用Cu-Kα辐射,其X-射线粉末衍射图谱如图3所示。
根据本发明所述化合物的一些具体实施方案,其中,Y为盐酸,所述的化合物TGA/DSC图谱如图4所示。
根据本发明所述化合物的一些具体实施方案,其中,Y为马来酸,优选所述的化合物使用Cu-Kα辐射,其X-射线粉末衍射图谱在以下2θ位置具有特征衍射峰:8.71°±0.2°、11.75°±0.2°、16.92°±0.2°、17.88°±0.2°、19.54°±0.2°、23.25°±0.2°、26.28°±0.2°、26.82°±0.2°、28.04°±0.2°、29.84°±0.2°。
根据本发明所述化合物的一些具体实施方案,其中,Y为马来酸,所述的化合物使用Cu-Kα辐射,其X-射线粉末衍射图谱如图5所示。
根据本发明所述化合物的一些具体实施方案,其中,Y为马来酸,所述的化合物TGA/DSC图谱如图6所示。
根据本发明所述化合物的一些具体实施方案,其中,Y为富马酸,优选所述的化合物使用Cu-Kα辐射,其X-射线粉末衍射图谱在以下2θ位置具有特征衍射峰:11.33°±0.2°、14.54°±0.2°、15.77°±0.2°、16.31°±0.2°、17.77°±0.2°、19.58°±0.2°、21.49°±0.2°、25.85°±0.2°、28.33°±0.2°。
根据本发明所述化合物的一些具体实施方案,其中,Y为富马酸,所述的化合物使用 Cu-Kα辐射,其X-射线粉末衍射图谱如图7所示。
根据本发明所述化合物的一些具体实施方案,其中,Y为富马酸,所述的化合物TGA/DSC图谱如图8所示。
根据本发明所述化合物的一些具体实施方案,其中,Y为氢溴酸,优选所述的化合物使用Cu-Kα辐射,其X-射线粉末衍射图谱在以下2θ位置具有特征衍射峰:7.58°±0.2°、15.18°±0.2°、17.81°±0.2°、19.37°±0.2°、22.87°±0.2°、23.49°±0.2°、24.12°±0.2°、29.12°±0.2°、30.64°±0.2°。
根据本发明所述化合物的一些具体实施方案,其中,Y为氢溴酸,所述的化合物使用Cu-Kα辐射,其X-射线粉末衍射图谱如图9所示。
根据本发明所述化合物的一些具体实施方案,其中,Y为氢溴酸,所述的化合物TGA/DSC图谱如图10所示。
根据本发明所述化合物的一些具体实施方案,其中,所述化合物的晶体纯度大于70%,优选大于80%,更优选大于90%。
其中可以理解的是,这里所述的化合物的晶体,是指X-射线粉末图谱符合本发明上述特征的晶体。
另一方面,本发明还提供了所述的化合物的制备方法,其中,所述方法还包括式(I)所示化合物的制备,包括:以式(II)所示化合物和Y为原料,制备得到式(I)所示化合物;
Figure PCTCN2019095857-appb-000002
Y为酸,优选马来酸、富马酸、氢卤酸、硫酸、磷酸、L-酒石酸、柠檬酸、L-苹果酸、马尿酸、D-葡萄糖醛酸、乙醇酸、粘酸、琥珀酸、乳酸、乳清酸、帕莫酸、丙二酸、龙胆酸、草酸、戊二酸或糖精,所述的氢卤酸优选氢溴酸或盐酸,更优选马来酸、富马酸、氢溴酸或盐酸。
根据本发明一些具体实施方案,其中,所述方法包括如下步骤:将式(I)所示化合物在适当的有机溶剂中重结晶得到所述的化合物。
根据本发明一些具体实施方案,其中,所述适当的有机溶剂选自乙酸乙酯、丙酮、和四氢呋喃中的一种或上述的能够与水互溶的溶剂与水的混合。
根据本发明一些具体实施方案,其中,所述适当的有机溶剂选自四氢呋喃和水的混合溶液、乙酸乙酯、或丙酮。
根据本发明一些具体实施方案,其中,所述方法包括如下步骤:将式(I)所示化合物与适当的有机溶剂混合形成悬浊液,搅拌1-4天,过滤分离得到所述晶体。
根据本发明一些具体实施方案,其中,所述方法还包括式(I)所示化合物的制备,包括:以式(II)所示化合物和Y为原料,在适当的有机溶剂中搅拌,制备得到式(I)所示化合物。
根据本发明一些具体实施方案,其中,所述适当的有机溶剂选自乙酸乙酯、丙酮、四氢呋喃和水中的一种或多种。
根据本发明一些具体实施方案,其中,所述适当的有机溶剂选自四氢呋喃和水的混合溶液、或者乙酸乙酯或丙酮。
另一方面,本发明还提供了所述的化合物(II)的制备方法,其中,所述方法包括式(I)所示化合物的制备,包括:
Figure PCTCN2019095857-appb-000003
a:式(IV)所示化合物在还原剂存在下发生还原反应,制备得到式(V)所示化合物;
b:式(V)所示化合物在酸性条件下发生水解反应,制备得到化合物II。
反应中所使用的溶剂选自水、甲醇、六氟异丙醇、三氟乙醇、乙醇、异丙醇、二氧六环、氯仿、丙酮、乙酸、二甲基亚砜、二氯甲烷、二氯乙烷、四氢呋喃、乙腈、乙酸乙酯、2-甲基四氢呋喃、甲基叔丁基醚、乙醚、N,N-二甲基甲酰胺、苯、甲苯、氟化苯、1,2-二氟苯、对溴氟苯、2,3-二氟溴苯、六氟苯、溴五氟苯、二甲苯、三甲苯、1,3,5-三(三氟甲基)苯或三氟甲基苯中的任一种或任几种任意比例的混合物;所选用的还原试剂为三乙基硅烷+酸、还原铁粉和氯化铵。
另一方面,本发明还提供了式(V)所示的化合物或者其光学异构体:
Figure PCTCN2019095857-appb-000004
又一方面,本发明还提供了一种式(III)所示化合物的晶体,使用Cu-Kα辐射,其X-射线粉末衍射图谱在以下2θ位置具有特征衍射峰:9.72°±0.2°、14.00°±0.2°、16.33°±0.2°、19.32°±0.2°、20.46°±0.2°、21.69°±0.2°、25.33°±0.2°;
Figure PCTCN2019095857-appb-000005
优选地,式(III)所示化合物的晶体使用Cu-Kα辐射,其X-射线粉末衍射图谱进一步在以下2θ位置具有特征衍射峰:11.21±0.2°、15.16±0.2°、18.87±0.2°、19.88±0.2°、23.47±0.2°、27.96±0.2°。
更优选地,式(III)所示化合物的晶体使用Cu-Kα辐射,其X-射线粉末衍射图谱进一步在以下2θ位置具有特征衍射峰:21.30±0.2°、25.40±0.2°、29.82±0.2°。
其中可以理解的是,本发明所述的“优选地,……,其X-射线粉末衍射图谱进一步在以下2θ位置具有特征衍射峰”,或者“更优选地,……,其X-射线粉末衍射图谱进一步在以下2θ位置具有特征衍射峰”等等诸如此类的表达,是指在前面所述2θ位置具有特征衍射峰的基础上,进一步还在所述的“以下2θ位置”具有特征衍射峰。
进一步优选地,式(III)所示化合物的晶体使用Cu-Kα辐射,其X-射线粉末衍射图谱如图1所示。
更进一步优选地,式(III)所示化合物的晶体的TGA/DSC谱图如图2所示。
又一方面,本发明还提供了一种药物组合物,其中,所述药物组合物含有治疗有效量的本发明上面任意一项所述的化合物或晶体、及药学上可接受的辅料。
再一方面,本发明还提供了上述的化合物、晶体和药物组合物在制备用于治疗和/或预防疼痛的药物中的用途。
再一方面,本发明还提供了一种治疗和/或预防疼痛的方法,所述方法包括给予治疗有效量的上述的化合物、晶体和药物组合物。
根据本发明一些具体实施方案,其中,所述的疼痛包括:疱疹后神经痛、三叉神经痛、偏头痛、与骨关节炎或关节风湿病相关的疼痛、下背疼痛、坐骨神经痛、牙痛、由烧伤引起的疼痛、由糖尿病性神经病引起的疼痛、由化疗诱导的神经病变引起的疼痛、与HIV相关的神经痛、与AIDS相关的神经痛、与癌症相关的神经痛或非神经痛、急性或慢性紧张性头痛、手术后疼痛或纤维肌痛。
本发明公开的X-射线粉末衍射或DSC图、TGA图,与其实质上相同的也属于本发明的范围。
除非有相反的陈述,在说明书和权利要求书中使用的术语具有下述含义。
“治疗有效量”指引起组织、系统或受试者生理或医学翻译的化合物的量,此量是所寻求的,包括在受治疗者身上施用时足以预防受治疗的疾患或病症的一种或几种症状发生或使 其减轻至某种程度的化合物的量。
“IC 50”指半数抑制浓度,指达到最大抑制效果一半时的浓度。
本发明晶型结构可以使用本领域普通技术人员已知的各种分析技术分析,包括但不限于,X-射线粉末衍射(XRD)、示差扫描热法(DSC)和/或热重分析(Thermogravimetric Analysis,TGA)。热重分析(Thermogravimetric Analysis,TGA),又叫热重法(Thermogravimetry,TG)。
可以理解的是,本发明描述的和保护的数值为近似值。数值内的变化可能归因于设备的校准、设备误差、晶体的纯度、晶体大小、样本大小以及其他因素。
可以理解的是,本发明的晶型不限于与本发明公开的附图中描述的特征图谱完全相同的特征图谱,比如XRD、DSC、TGA,具有与附图中描述的哪些图谱基本上相同或本质上相同的特征图谱的任何晶型均落入本发明的范围内。
本发明公开的晶型可以经如下的常见的制备晶型的方法制备:
1、挥发实验是将样品澄清溶液在不同温度下敞口挥发至溶剂干。
2、晶浆实验是将样品的过饱和溶液(有不溶固体存在)在不同溶剂体系中某个温度下进行搅拌。
3、抗溶剂实验是取样品溶解在良溶剂中,加入抗溶剂,析出固体短时搅拌后立即过滤处理。
4、冷却结晶实验是在高温下将一定量的样品溶解到相应溶剂中,然后直接在室温或低温搅拌析晶。
5、高分子模板实验是在样品澄清溶液中加入不同种类的高分子材料,置于室温下敞口挥发至溶剂干。
6、热方法实验是将样品按一定热方法结晶条件处理并冷却至室温。
7、水汽扩散实验是将样品在室温下一定湿度环境中放置。
附图说明
图1为化合物1的苯磺酸盐晶型的XRD。
图2为化合物1的苯磺酸盐晶型的TGA/DSC。
图3为化合物1的盐酸盐晶型的XRD。
图4为化合物1的盐酸盐晶型的TGA/DSC。
图5为化合物1的马来酸盐晶型的XRD。
图6为化合物1的马来酸盐晶型的TGA/DSC。
图7为化合物1的富马酸盐晶型的XRD。
图8为化合物1的富马酸盐晶型的TGA/DSC。
图9为化合物1的氢溴酸盐晶型的XRD。
图10为化合物1的氢溴酸盐晶型的TGA/DSC。
图11为化合物1的盐酸盐晶型25℃/60%RH和40℃/75%RH的XRD。
图12为化合物1的马来酸盐晶型25℃/60%RH和40℃/75%RH的XRD。
图13为化合物1的富马酸盐晶型25℃/60%RH和40℃/75%RH的XRD。
图14为化合物1的氢溴酸盐晶型25℃/60%RH和40℃/75%RH的XRD。
图15为化合物1的苯磺酸盐晶型25℃/60%RH和40℃/75%RH的XRD。
图16为化合物1的苯磺酸盐L5-L6脊神经结扎动物模型实验结果。
图17为化合物1的苯磺酸盐单晶衍射图谱。
具体实施方式
以下结合附图及实施例详细说明本发明的技术方案,但本发明的保护范围包括但是不限于此。
实施例1:化合物1j的制备
Figure PCTCN2019095857-appb-000006
第一步:(±)(1S,5R,7S)-7-(2-溴乙基)双环[3.2.0]庚-2-烯-6-酮(1b):
Figure PCTCN2019095857-appb-000007
向反应瓶中加入原料1a(24g,0.36mol)和1100ml环己烷,氮气保护,加入三乙胺(25g, 0.25mol),加热至回流状态,用注射泵滴加4-溴丁酰氯(46g,0.25mol)的环己烷溶液(100mL,25ml/h),加完回流反应4小时。将反应液抽滤,环己烷洗涤(150mlx3),合并滤液,饱和氯化铵洗涤(1000mlx2),水洗(1000mlx2),无水硫酸钠干燥,过滤,减压浓缩,硅胶柱色谱分离提纯(石油醚/乙酸乙酯(v/v)=80:1)得到淡黄色油状物1b(9.6g,产率18%), 1H NMR(400MHz,CDCl 3)δ5.97–5.85(m,1H),5.80–5.70(m,1H),3.91–3.79(m,1H),3.67(dd,J=9.7,5.5Hz,2H),3.47(t,J=6.8Hz,2H),2.68(ddd,J=18.3,15.2,3.9Hz,1H),2.47–2.31(m,1H),2.13(dq,J=21.0,6.5Hz,1H),1.93(ddd,J=21.5,12.2,7.1Hz,1H)。
第二步:(±)(1S,5R,7S)-7-(2-溴乙基)螺[双环[3.2.0]庚-[2]烯-6,2'-[1,3]二恶茂烷](1c):
Figure PCTCN2019095857-appb-000008
取1b(23g,0.11mol),对甲苯磺酸一水合物(1.0g,5.5mmol)及乙二醇(27.3g,0.44mol)至单口烧瓶中,加入甲苯250mL,加热回流分水6h。冷却后将反应液倒入冰水中,加碳酸氢钠调节pH至中性,乙酸乙酯萃取(300mL*3),合并有机相,无水硫酸钠干燥,过滤,浓缩,柱层析分离纯化(乙酸乙酯:石油醚=1:30),得到黄色油状物1c(21.2g,产率75%), 1H NMR(400MHz,CDCl 3)δ5.94–5.83(m,1H),5.67–5.56(m,1H),3.95–3.75(m,4H),3.36–3.25(m,2H),3.23–3.12(m,1H),3.02(ddd,J=22.9,15.7,8.0Hz,2H),2.48–2.25(m,2H),1.99–1.78(m,2H)。
第三步:(±)(1S,5R,7S)-7-(2-溴乙基)螺[双环[3.2.0]庚-[2]烯-6,2'-[1,3]二氧戊烷]-2-醇(1d):
Figure PCTCN2019095857-appb-000009
向反应瓶中加入原料1c(15g,0.06mol),加入溶剂四氢呋喃(250ml),冰水浴下滴加硼烷二甲硫醚溶液(30ml,0.3mol),加完保温2个小时,冰水浴下滴加纯化水(0.6mol),接着滴加氢氧化钠水溶液(3mol/l,200ml),接着滴加双氧水(含H 2O 2 0.6mol),加完升至室温反应3小时。以乙酸乙酯萃取(200mlx3),合并有机相,水洗(300mlx2),无水硫酸钠干燥,过滤,减压浓缩,得淡黄色油状物1d(16.5g),不纯化直接用于下一步反应。
第四步:(±)(1S,5R,7S)-7-(2-溴乙基)螺[双环[3.2.0]庚-[2]烯-6,2'-[1,3]二氧戊烷]-2-酮(1e):
Figure PCTCN2019095857-appb-000010
向反应瓶中加入原料1d(16.5g,0.06mol)和二氯甲烷(250mL),冰浴下分批加入戴斯马丁氧化剂(38.2g,0.09mol),室温反应2小时。向反应液中滴加饱和碳酸氢钠溶液至pH为7左右,分液,水相以二氯甲烷萃取(200mLx2),合并有机相,水洗(500mlx1),无水硫酸钠干燥,过滤,减压浓缩,硅胶柱色谱分离提纯(石油醚/乙酸乙酯(v/v)=8:1)得到淡黄色油状物1e(9.7g,产率59%), 1H NMR(400MHz,CDCl 3)δ4.02–3.81(m,4H),3.40(dd,J=10.3,3.8Hz,2H),3.15(td,J=10.3,4.9Hz,2H),2.61(ddd,J=20.6,14.0,8.1Hz,2H),2.27(ddt,J=18.9,9.6,1.8Hz,1H),2.12–2.00(m,1H),1.99–1.70(m,3H)。
第五步:(±)(1'R,3'S,6'S)-螺[[1,3]二氧戊烷-2,2'-三环[4.2.1.0 3,8]壬烷]-7'–酮(1f):
Figure PCTCN2019095857-appb-000011
向反应瓶中加入叔丁醇钾(16g,0.14mol)和四氢呋喃(1L),氮气保护,降温至0℃,滴加1e的甲苯溶液(29g,0.11mol),加完升至室温搅拌2小时。冰浴下滴加饱和氯化铵溶液至pH为7左右,以乙酸乙酯萃取(500mlx2),水洗(1000mlx2),无水硫酸钠干燥,过滤,减压浓缩,硅胶柱色谱分离提纯(石油醚/乙酸乙酯(v/v)=10:1)得到淡黄色油状物1f(9.5g,产率45%), 1H NMR(400MHz,CDCl 3)δ4.04–3.86(m,4H),3.20–3.07(m,1H),2.99–2.86(m,1H),2.53(ddd,J=8.6,5.6,1.7Hz,1H),2.41–2.24(m,2H),2.24–2.01(m,2H),1.95(d,J=13.2Hz,1H),1.61(dddd,J=14.4,7.6,2.6,0.7Hz,1H),1.51–1.38(m,1H)。
第六步:(±)(1'R,3'S,6'S)-螺[[1,3]二氧戊烷-2,2'-三环[4.2.1.0 3,8]壬烷](1g):
Figure PCTCN2019095857-appb-000012
向反应瓶中加入原料1f(9.0g,46.3mmol)和一缩二乙二醇(150mL),加入水合联氨(8.9g,278mmol)和氢氧化钾(15.6g,278mmol),180℃反应3小时,70℃减压旋蒸除水,接着升至220℃反应2小时,冷却,向反应液中加入水(200mL),以甲基叔丁基醚萃取(300mLx3),1mol/l盐酸洗涤(400mlx2),水洗(400mlx2),无水硫酸钠干燥,过滤,减压浓缩,硅胶柱色 谱分离提纯(石油醚/乙酸乙酯(v/v)=60:1)得到无色油状物1g(3g),不纯化直接用于下一步。
第七步:(±)(1R,3S,6R,8R)-三环[4.2.1.0 3,8]壬烷-2-酮(1h):
Figure PCTCN2019095857-appb-000013
向反应瓶中加入原料1g(3g,16.6mmol),加入溶剂四氢呋喃(36ml)和水(12ml),冰浴下滴加三氟醋酸(8ml),45℃反应3小时,冰浴下滴加饱和碳酸氢钠溶液至pH为7左右,以乙酸乙酯萃取(80mlx3),水洗(100mlx2),无水硫酸钠干燥,过滤,减压浓缩,硅胶柱色谱分离提纯(石油醚/乙酸乙酯(v/v)=100:1)得到白色固体1h(2g,产率88%), 1H NMR(400MHz,CDCl 3)δ3.47–3.33(m,1H),3.19(dd,J=3.3,1.8Hz,1H),2.84–2.69(m,1H),2.47–2.32(m,1H),2.12–1.97(m,1H),1.93(d,J=12.3Hz,1H),1.82–1.69(m,1H),1.56–1.35(m,4H),1.27–1.10(m,1H)。
第八步:(±)乙基-2-((1R,3S,6R,8R)-三环[4.2.1.0 3,8]壬烷-2-亚基)乙酸酯(1i):
Figure PCTCN2019095857-appb-000014
向反应瓶中加入氢化钠(60%,91.6g,3.82mol)和四氢呋喃(5L),降温至0℃,滴加二乙氧基膦酰乙酸乙酯(856g,3.82mol)的四氢呋喃溶液(400mL),滴完,保温反应15分钟,滴加原料1h(400g,2.94mol)的四氢呋喃溶液(200mL),滴完,升至室温反应1小时。冰水浴下滴加饱和氯化铵至pH到7-8,以乙酸乙酯萃取(500mlx3),饱和食盐水洗涤(500mlx2),无水硫酸钠干燥,减压浓缩,硅胶柱色谱分离提纯(石油醚/乙酸乙酯(v/v)=30:1),得到淡黄色油状物1i(310g,产率51%).
第九步:(±)乙基-2-((1R,3S,6R,8R)-2-(硝基甲基)三环[4.2.1.0 3,8]壬烷-2-基)乙酸酯(1j):
Figure PCTCN2019095857-appb-000015
向反应瓶中加入原料1i(390g,1.89mol),硝基甲烷(4L)和1,8-二氮杂双环[5.4.0]十一碳 -7-烯(575.6g,3.78mol),升温至80℃反应9小时。将反应液倒入到冰水中(3000ml),DCM萃取(2000mlx3),食盐水洗涤(3000ml),无水硫酸钠干燥,减压浓缩,硅胶柱色谱分离提纯(石油醚/乙酸乙酯(v/v)=100:1),得到无色油状物1j(360g,产率71%)。
实施例2:化合物1的制备
Figure PCTCN2019095857-appb-000016
取(±)乙基-2-((1R,3S,6R,8R)-2-(硝基甲基)三环[4.2.1.0 3,8]壬烷-2-基)乙酸酯(中间体1j)(360g)用于拆分,制备条件:仪器:Thar analytical SFC(SFC-A),色谱柱:ChiralPak AD,150×4.6mm I.D.,3μm.流动相:A for CO 2 and B for Methanol,梯度:B 5-40%,流速:2.4mL/min,柱温:35℃。分离后得到两个光学异构体:峰1(保留时间:3.8分钟,174g,),峰2(保留时间:5.7分钟,160g)。化合物1j[α]20D=0.00°(C=0.9,CH 2Cl 2);峰2,[α]20D=44°(C=0.103,CH 3OH)。C为每100ml溶液中含有被测物质的重量(单位为g)。20D为20摄氏度下测试,钠光灯源,波长为589nm;
第一步:(1'S,2'S,3'R,6'S,8'S)-螺[吡咯烷-3,2'-三环[4.2.1.03,8]壬烷]-5-酮(1k-1):
Figure PCTCN2019095857-appb-000017
向反应瓶中加入原料1j-1(峰2,270g,1.01mol),乙醇(1L)和水(1L),然后再加入还原铁粉(282g,5.05mol)和氯化铵(162g,3.03mol),回流反应4小时。将反应液过滤,滤液浓缩掉乙醇,剩余溶液加入500ml水,滤渣用二氯甲烷洗涤,200mlx3,收集滤液,将此有机相和前面的剩余溶液混合,分液,再以二氯甲烷萃取两次,500mlx2,合并有机相,水洗,500mlx2,硫酸钠干燥,减压浓缩,硅胶柱色谱分离提纯(二氯甲烷/甲醇(v/v)=40:1-10:1),得到白色固体1k-1(160g,产率83%)。
第二步:2-((1S,2S,3R,6S,8S)-2-(氨甲基)三环[4.2.1.0 3,8]壬烷-2-基)乙酸(1):
Figure PCTCN2019095857-appb-000018
将原料1k-1(320g,1.673mol)加到反应瓶中,加入6N的盐酸(1.6L),回流反应16h。将析出的固体过滤,所得固体溶于1L纯化水中,以浓氨水调节pH值到7左右,抽滤,冰水洗涤,干燥,得白色固体。滤液在冰水浴中以10N氢氧化钠调节至6左右,再以浓氨水调节至7左右,以二氯甲烷萃取(1Lx3),剩余水相浓缩干,过滤,冰水洗盐,得白色固体。将两部分得到的固体以二氯甲烷打浆(1.5Lx3),得白色固体产物化合物1(245g,70%)。
实施例3:化合物1的苯磺酸盐:
Figure PCTCN2019095857-appb-000019
向反应瓶中加化合物1(245g,1.17mol),加入甲醇(2.2L),滴加一水苯磺酸的甲醇溶液(268.0g,1.52mol),加完室温下搅拌1小时,将析出的固体抽滤,滤液浓缩,得固体,合并两部分固体,以乙酸乙酯打浆(1.5Lx3),过滤,乙酸乙酯洗涤,干燥,得纯品化合物1的苯磺酸盐(398g,产率92.5%,HPLC:99%)。
1H NMR(400MHz,D 2O)δ7.85–7.70(m,2H),7.54(tt,J=14.3,7.2Hz,3H),3.33(d,J=13.8Hz,2H),2.81(dd,J=13.2,5.4Hz,1H),2.57(q,J=17.6Hz,2H),2.47–2.37(m,1H),2.27(dd,J=12.0,6.0Hz,1H),2.17–2.06(m,1H),1.96(dd,J=21.6,9.5Hz,1H),1.79–1.66(m,1H),1.66–1.40(m,4H),1.33(dd,J=14.3,9.0Hz,1H),1.26–1.15(m,1H)。
产物的XPRD图谱如图1所示,TGA/DSC图如图2所示。单晶衍射图谱如图17所示。
实施例4:
化合物1的盐酸盐晶型:
1.称取392.8毫克的化合物1并量取180微升浓盐酸(37%)加至20毫升玻璃瓶中。
2.量取10毫升乙酸乙酯加至玻璃瓶中形成悬浊液。
3.室温下磁力搅拌(转速约1000转/分)1天,过滤后分离出固体。
4. 50℃真空干燥2小时后得固体产物。
产物的XRD图谱如图3示,TGA/DSC图如图4所示。
实施例5:
化合物1的马来酸盐晶型
1.称取419.2毫克的化合物1并称取244.2毫克马来酸加至20毫升玻璃瓶中。
2.量取10毫升乙酸乙酯加至玻璃瓶中形成悬浊液。
3.室温下磁力搅拌(转速约1000转/分)1天,过滤后分离出固体。
4. 50℃真空干燥2小时后得固体产物。
产物的XRD图谱如图5所示,TGA/DSC图如图6所示。
实施例6:
化合物1的富马酸盐晶型
1.称取408.2毫克的化合物1并称取270.9毫克富马酸加至20毫升玻璃瓶中。
2.量取10毫升乙酸乙酯加至玻璃瓶中形成悬浊液。
3.室温下磁力搅拌(转速约1000转/分)1天,过滤后分离出固体。
4. 50℃真空干燥2小时后得固体产物。
产物的XRD图谱如图7所示,TGA/DSC图如图8所示。
实施例7:
化合物1的氢溴酸盐晶型
1.称取397.5毫克的化合物1并量取400微升氢溴酸加至20毫升玻璃瓶中。
2.量取10毫升乙酸乙酯加至玻璃瓶中形成悬浊液。
3.室温下磁力搅拌(转速约1000转/分)1天,过滤后分离出固体。
4. 50℃真空干燥2小时后得固体产物。
产物的XRD图谱如图9所示,TGA/DSC图如图10所示。
上述各实施例的盐晶型表征数据如下表1所示:
表1、盐样品表征数据汇总
Figure PCTCN2019095857-appb-000020
成盐配比(酸/游离体)根据HPLC/IC测试结果计算得到。
测试例
1、XRD测试
将化合物1的苯磺酸盐按照如下方法进行X-射线单晶衍射测试
培养方法:取约100mg化合物1的苯磺酸盐放置于玻璃小瓶中,加入0.2mL水和0.2mL二甲基亚砜升温至80℃溶清,保持5分钟后自然降至室温,得到棒状晶体(晶体结构信息 如下表3所示)。
表2、X-射线单晶衍射测试仪器信息和检测方法参数
Figure PCTCN2019095857-appb-000021
表3、单晶结构信息如下所示:
Figure PCTCN2019095857-appb-000022
化合物1的苯磺酸盐单晶衍射图谱如图17所示。
将化合物1的苯磺酸盐按照如下方法进行X-射线粉末衍射测试
用PANalytical X射线衍射仪X’pertpowder型(PANalytical B.V.,荷兰),使用Cu Kα辐射,在
Figure PCTCN2019095857-appb-000023
(40kV,40mA),用PIXcel 1D detector探测器获得粉末X射线衍射图,分析软件highscore 3.0e(3.0.5),采集软件PANalytical Data Collector 4.2。分析典型地在扫描速率0.1094°/s、在4°到40°的2θ角范围内以每点0.013°步长进行。将接受时研磨至细粉末的样品、轻轻的装到带凹槽的定制玻璃样品板上并铺平表面以用于测试。该仪器每周用仪器自带的硅质标准样品片标定,至±0.02°的2θ角的偏差范围内。
化合物1的苯磺酸盐结晶的X-射线粉末衍射图谱(XRD)附图1所示。峰值如表4所示。
表4
Figure PCTCN2019095857-appb-000024
Figure PCTCN2019095857-appb-000025
将化合物1的盐酸盐、马来酸盐、富马酸盐和氢溴酸盐按照如下方法进行X-射线粉末衍射测试
XRD图谱在帕纳科XPERT-3和Empyrean X射线粉末衍射分析仪上采集,XRD参数如下表5所示:
表5
Figure PCTCN2019095857-appb-000026
化合物1的盐酸盐晶型的XRD附图3所示,具体峰值如表6所示。
表6
Figure PCTCN2019095857-appb-000027
Figure PCTCN2019095857-appb-000028
化合物1的马来酸盐晶型的XRD附图5所示,具体峰值如表7所示。
表7
Figure PCTCN2019095857-appb-000029
Figure PCTCN2019095857-appb-000030
化合物1的富马酸盐晶型的XRD附图7所示,具体峰值如表8所示。
表8
Figure PCTCN2019095857-appb-000031
化合物1的氢溴酸盐晶型的XRD附图9所示,具体峰值如表9所示。
表9
Figure PCTCN2019095857-appb-000032
2、TGA和DSC
TGA和DSC图谱分别在TA Q5000/500热重分析仪和TA Q2000/200差示扫描量热仪上采,测试参数如表10所示,结果见图2、图4、图6、图8和图10。
表10 DSC测试参数
参数 DSC TGA
方法 线性升温 线性升温
样品盘 铝盘、压盖 铝盘、敞开
温度范围 25℃-目标温度 室温-目标温度
扫描速率(℃/分钟) 10 10
保护气体 氮气 氮气
3、稳定性
分别称取适量化合物1的盐酸盐晶型、马来酸盐晶型、富马酸盐晶型、氢溴酸盐晶型和苯磺酸盐晶型在25℃/60%RH和40℃/75%RH条件下放置。一周后通过XRD测试固体样品的晶型以评估样品的固体稳定性。具体操作步骤:1)分别称取约10毫克的相应固体样品于1.5毫升的HPLC小瓶中;2)将样品小瓶用
Figure PCTCN2019095857-appb-000033
封口膜封盖后,扎大约20个小针孔后放置于25℃/60%RH和40℃/75%RH条件下,一周后取样进行XRD测试。
XRD结果如图11至图15所示。评估结果表明,在25℃/60%RH和40℃/75%RH条件下放置一周后,盐酸盐晶型(813318-16-A)、马来酸盐晶型(813318-16-B)、富马酸盐晶型(813318-16-C)、氢溴酸盐晶型(813318-16-D)和苯磺酸盐晶型(813320-05-A)均未发生晶型改变。
4、溶解性
37℃条件下的动态溶解度评估选用了模拟胃液(SGF)、模拟禁食状态肠液(FaSSIF)、模拟饱食状态肠液(FeSSIF)和水四种介质。试验中,分别称取约80毫克固体与4毫升介质在5毫升玻璃瓶中混合,置于37℃环境中旋转(25转/分)1小时、2小时、4小时和24小时后,在每个取样点取出1.0毫升的悬浊液,用离心管离心分离(转速为14000转/分,5分钟),上层清液的浓度和pH值分别利用HPLC和pH计进行测试,下层固体的晶型变化利用XRPD进行测定。所有测试结果汇总于表12中。
结果表明:盐酸盐晶型、马来酸盐晶型、富马酸盐晶型和氢溴酸盐晶型在四种介质中平衡一小时后均溶清(均大于10毫克/毫升,以游离体质量计),具有较好的溶解度。
浓度的测试方法为高效液相色谱在Agilent 1100HPLC上采集。使用ELSD检测器。具体仪器和测试参数如下:色谱柱Welch Xtimate C18,150×3.0mm,3.5μm;流动相,A:0.05%三氟乙酸水溶液B:乙腈,梯度洗脱;时间:20min;流速:0.8ml/min;进样量:10μL;柱温:30℃;稀释液:水;ELSD加热温度,60℃;ELSD氮气流速:1L/min。梯度洗脱具体如表11所示:
表11
时间(min) %B
0.0 10%
3.0 10%
14.0 90%
16.0 90%
16.1 10%
20.0 10%
表12
Figure PCTCN2019095857-appb-000034
FC*:Form Change;NA:1小时已溶清,未进行测试;
5、引湿性
盐酸盐晶型、马来酸盐晶型、富马酸盐晶型和氢溴酸盐晶型和苯磺酸盐晶型均几乎无引湿性,且DVS测试前后晶型均未发生改变。结果表明,氢溴酸盐晶型和盐酸盐晶型为无水晶型,具有较好的物理和化学稳定性,具备较优的溶解性,五种晶型几乎无引湿性,见表13-1。
动态水分吸附(DVS)曲线在SMS(Surface Measurement Systems)的DVS Intrinsic上采集。在25℃时的相对湿度用LiCl,Mg(NO3)2和KCl的潮解点校正。DVS测试参数如下表13所示:
表13
Figure PCTCN2019095857-appb-000035
表13-1
Figure PCTCN2019095857-appb-000036
备注:相对湿度为80%时样品的引湿增重。根据2015年中国药典附录XIX J规定,引湿增重小于0.2%时描述为几乎无引湿性。
6、生物测试例
化合物对钙离子通道蛋白Cavα2δ的竞争结合能力测试
取大鼠大脑皮质组织于10倍体积(w/v)冰冷的0.32M蔗糖/5mMTris-乙酸(pH 7.4),匀 浆后,蔗糖密度梯度离心法制备突触质膜,保存于Tris-乙酸(pH 7.4)缓冲液,临用前重悬于10mM HEPES(pH 7.4)缓冲液。测试化合物溶于1%DMSO,并稀释成梯度浓度(1nM-1000nM),与20nM[3H]加巴喷丁一起加入突触质膜悬液(约0.05-0.1mg总蛋白质),25℃孵育30分钟。反应结束后反应体系经真空滤过至Whatman GFB滤膜,滤膜以5mL 100mM冰冷的氯化钠溶液洗3次,液闪基数测定滤膜的放射性。非特异结合以100M加巴喷丁封闭。计算化合物对放射标记加巴喷丁与突触质膜的结合的抑制率,并计算化合物的IC50。化合物1的苯磺酸盐的IC 50=3.96nM。化合物1的苯磺酸盐具有较好的对钙离子通道蛋白Cavα2δ的竞争结合能力。
L5-L6脊神经结扎动物模型(SNL)
在动物手术环境下将6-7周龄的SD雄性大鼠(购置维通利华)使用5%异氟烷进行麻醉。将麻醉的动物俯卧位放置,在第5腰椎处切口,打开皮肤暴露出左侧椎旁肌肉,并逐层撕裂暴露出L5和L6脊神经。使用4-0手术丝线结扎L5和L6背根神经节远端。逐层缝合肌肉和皮肤,动物恢复一周。
待动物模型恢复后,采用Von Frey丝(DanMic Global;USA)测试动物的接触性疼痛。并用“上下法”来衡量动物有50%缩腿反应的力度(g;50%PWT)。首先,选取50%PWT力度为1-5g的动物入组。给药前测试动物的基线值,接着口服给予不同化合物(使用5%羧甲基纤维素钠配制),在1.0g-15g的测试范围内测试不同时间点动物的疼痛反应。实验结果见图16。
结论:本发明化合物能明显抑制大鼠脊神经结扎引起的机械痛觉超敏。
大鼠药代动力学测试
试验动物:12只雄性SD大鼠,180~220g左右,6~8周龄,购于成都达硕实验动物有限公司。动物饲养于SPF环境中,温度20-22℃,相对湿度:40-70%,12h/12h明暗光照,自由饮食饮水,适应性观察3天后开始试验。
药物配制:准确称取一定量受试化合物,加入0.5%CMC-Na碾磨均匀、旋涡混合后得混悬溶液。所有受试化合物均临用前新鲜配制。
给药及检测:试验当天,12只SD大鼠按体重随机分为4组,每组3只。给药前1天禁食不禁水12~14h,给药后4h给食。大鼠分别口服给予不同受试化合物,给药体积为10mL/kg。于给药前及给药后异氟烷麻醉经眼眶取血0.20ml,采血时间点为0,5min,15min,30min,1,2,4,6,8,10,24h,肝素抗凝,5000rpm,4℃离心10min,收集血浆。所有血浆样品分析前存于-80℃。采用HPLC-MS/MS对血浆样品中的原型药物进行检测,结果见表14:
表14:大鼠体内药代动力学参数
Figure PCTCN2019095857-appb-000037

Claims (15)

  1. 式(I)所示化合物
    Figure PCTCN2019095857-appb-100001
    其中:
    Y选自马来酸、富马酸、氢卤酸(优选为氢溴酸和盐酸)、硫酸、磷酸、L-酒石酸、柠檬酸、L-苹果酸、马尿酸、D-葡萄糖醛酸、乙醇酸、粘酸、琥珀酸、乳酸、乳清酸、帕莫酸、丙二酸、龙胆酸、草酸、戊二酸或糖精。
  2. 根据权利要求1所述的化合物,其中,Y选自马来酸、富马酸、氢溴酸或盐酸。
  3. 根据权利要求1所述的化合物,其中,Y为盐酸,所述的化合物使用Cu-Kα辐射,其X-射线粉末衍射图谱在以下2θ位置具有特征衍射峰:7.59°±0.2°、14.37°±0.2°、15.21°±0.2°、17.98°±0.2°、19.53°±0.2°、23.61°±0.2°、24.13°±0.2°、29.23°±0.2°(更优选其X-射线粉末衍射图谱如图3所示)。
  4. 根据权利要求1所述的化合物,其中,Y为马来酸,所述的化合物使用Cu-Kα辐射,其X-射线粉末衍射图谱在以下2θ位置具有特征衍射峰:8.71°±0.2°、11.75°±0.2°、16.92°±0.2°、17.88°±0.2°、19.54°±0.2°、23.25°±0.2°、26.28°±0.2°、26.82°±0.2°、28.04°±0.2°、29.84°±0.2°(优选X-射线粉末衍射图谱如图5所示)。
  5. 根据权利要求1所述的化合物,其中,Y为富马酸,所述的化合物使用Cu-Kα辐射,其X-射线粉末衍射图谱在以下2θ位置具有特征衍射峰:11.33°±0.2°、14.54°±0.2°、15.77°±0.2°、16.31°±0.2°、17.77°±0.2°、19.58°±0.2°、21.49°±0.2°、25.85°±0.2°、28.33°±0.2°(优选X-射线粉末衍射图谱如图7所示)。
  6. 根据权利要求1所述的化合物,其中,Y为氢溴酸,所述的化合物使用Cu-Kα辐射,其X-射线粉末衍射图谱在以下2θ位置具有特征衍射峰:7.58°±0.2°、15.18°±0.2°、17.81°±0.2°、19.37°±0.2°、22.87°±0.2°、23.49°±0.2°、24.12°±0.2°、29.12°±0.2°、30.64°±0.2°(优选X-射线粉末衍射图谱如图9所示)。
  7. 根据权利要求1~6任意一项所述的化合物,其中,所述化合物的晶体纯度大于70%,优选大于80%,更优选大于90%。
  8. 权利要求1~7任意一项所述的化合物的制备方法,其中,所述方法包括式(I)所示化合物的制备,包括:以式(II)所示化合物和Y为原料,制备得到式(I)所示化合物;
    Figure PCTCN2019095857-appb-100002
  9. 根据权利要求8所述的制备方法,其中,所述方法包括如下步骤:将式(I)所示化合物在适当的有机溶剂中重结晶得到所述的式(I)化合物晶型(优选所述适当的有机溶剂选自乙酸乙酯、丙酮、四氢呋喃和水中的一种或多种(优选四氢呋喃和水的混合溶液、乙酸乙酯或丙酮))。
  10. 根据权利要求8所述的制备方法,其中,所述方法包括如下步骤:将式(I)所示化合物与适当的有机溶剂混合形成悬浊液,搅拌1-4天,过滤分离得到。
  11. 一种式(III)所示化合物的晶体,使用Cu-Kα辐射,其X-射线粉末衍射图谱在以下2θ位置具有特征衍射峰:9.72°±0.2°、14.00°±0.2°、16.33°±0.2°、19.32°±0.2°、20.46°±0.2°、21.69°±0.2°、25.33°±0.2°;
    Figure PCTCN2019095857-appb-100003
  12. 一种所述的化合物(II)的制备方法,其中,所述方法包括式(I)所示化合物的制备,包括:
    Figure PCTCN2019095857-appb-100004
    a:式(IV)所示化合物在还原剂存在下发生还原反应,制备得到式(V)所示化合物;
    b:式(V)所示化合物在酸性条件下发生水解反应,制备得到化合物II。
  13. 式(V)所示的化合物或者其光学异构体:
    Figure PCTCN2019095857-appb-100005
  14. 一种药物组合物,其中,所述药物组合物含有治疗有效量的权利要求1~7任意一项所述的化合物或者权利要求11所述的晶体、及药学上可接受的辅料。
  15. 权利要求1~7任意一项所述的化合物或者权利要求11所述的晶体或者权利要求14所述的药物组合物在制备用于治疗和/或预防疼痛的药物中的用途(优选所述的疼痛包括:疱疹后神经痛、三叉神经痛、偏头痛、与骨关节炎或关节风湿病相关的疼痛、下背疼痛、坐骨神经痛、牙痛、由烧伤引起的疼痛、由糖尿病性神经病引起的疼痛、由化疗诱导的神经病变引起的疼痛、与HIV相关的神经痛、与AIDS相关的神经痛、与癌症相关的神经痛或非神经痛、急性或慢性紧张性头痛、手术后疼痛或纤维肌痛)。
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