CN116265463A - Crystal form of aldose reductase inhibitor, and preparation method and application thereof - Google Patents
Crystal form of aldose reductase inhibitor, and preparation method and application thereof Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims description 27
- 239000003288 aldose reductase inhibitor Substances 0.000 title abstract description 6
- 229940118148 Aldose reductase inhibitor Drugs 0.000 title abstract description 4
- 150000001875 compounds Chemical class 0.000 claims description 57
- 238000000034 method Methods 0.000 claims description 17
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/04—Ortho-condensed systems
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
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- A61P13/12—Drugs for disorders of the urinary system of the kidneys
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- A—HUMAN NECESSITIES
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
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- A—HUMAN NECESSITIES
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- A61P3/00—Drugs for disorders of the metabolism
- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
- A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
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- A—HUMAN NECESSITIES
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- A—HUMAN NECESSITIES
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- A61P9/00—Drugs for disorders of the cardiovascular system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/13—Crystalline forms, e.g. polymorphs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
Abstract
Description
Technical Field
The invention belongs to the field of pharmaceutical chemistry, and particularly relates to a salt of an aldose reductase inhibitor, and a preparation method and application thereof.
Background
Diabetes is one of the most common chronic conditions. High blood glucose levels result from a lack of insulin production and/or insulin sensitivity. Individuals with hyperglycemia metabolize more glucose in insulin-insensitive cells such as the lens, peripheral nerves, and glomeruli via the glucose-to-sorbitol-to-fructose pathway. This results in an excess of sorbitol in the cells, which does not readily diffuse through the cell membrane. The increased concentration of sorbitol triggers water flow into the cells, causing swelling and potential injury.
Aldose reductase, an enzyme present in many parts of the body, catalyzes the reduction of glucose to sorbitol, which is one of the steps in the sorbitol pathway responsible for the formation of fructose from glucose. When glucose concentration rises in diabetic conditions where the tissue is no longer insulin sensitive, aldose reductase activity increases. These tissues include, for example, the lens, peripheral nerves and glomeruli. Sorbitol cannot readily diffuse across the cell membrane and thus accumulate, causing osmotic damage, which in turn leads to retinopathy, neuropathy and nephropathy. Thus, inhibition of aldose reductase can prevent sorbitol accumulation in insulin-insensitive cells in diabetics, and new methods of preventing macrovascular and microvascular complications in diabetics have been proposed. Furthermore, aldose reductase inhibitors such as zopoloxostat may help treat or ameliorate such effects, and have shown efficacy in wound healing of the corneal epithelium of diabetic animal models.
Chinese patent No. CN201180034944.5 discloses aldose reductase inhibitors represented by the following formula I:
wherein examples 1 and 2 disclose compounds of the following structure:
the compound of formula A is insoluble in water and has poor drug properties, so that the applicant improves the structure of the compound of formula A to meet the pharmaceutical requirements.
PCT patent WO2020173495A filed by the applicant describes a compound of formula A-N and one of its crystalline forms, the crystalline form of the compound of formula A-N having characteristic peaks at 17.2.+ -. 0.2 °, 21.4.+ -. 0.2 °, 21.9.+ -. 0.2 °, 25.9.+ -. 0.2 ℃ using Cu-K alpha radiation, X-ray powder diffraction expressed in terms of 2 theta angle.
Disclosure of Invention
The inventors have found that the crystalline form of the compound of formula A-N described in WO2020173495A is obtained in water and is not easily dried. Accordingly, there is a need for further research into the crystalline forms of compounds of formulas A-N to meet the need for better pharmaceuticals.
In order to solve the problems, the invention provides a crystal form II of the compound shown in the formulas A-N,
the method is characterized in that: using Cu-ka radiation, X-ray powder diffraction expressed in terms of 2θ has characteristic peaks at 5.2±0.2°, 10.7±0.2°, 14.4±0.2°, 21.6±0.2°, 27.1±0.2°.
In some embodiments, form ii of the compound of formulas a-N, which uses Cu-ka radiation, has characteristic peaks at 5.2±0.2°, 10.7±0.2°, 14.4±0.2°, 21.6±0.2°, 24.7±0.2°, 26.0±0.2°, 27.1±0.2° by X-ray powder diffraction expressed in terms of 2θ.
In some embodiments, form ii of the compound of formulas a-N, using Cu-ka radiation, has characteristic peaks at 5.2±0.2°, 10.7±0.2°, 13.4±0.2°, 14.4±0.2°, 16.3±0.2°, 18.0±0.2°, 21.6±0.2°, 22.5±0.2°, 23.2±0.2°, 24.7±0.2°, 26.0±0.2°, 27.1±0.2°, 30.2±0.2°, 31.6±0.2°.
In some embodiments, form ii of the compound of formulas a-N has an X-ray powder diffraction pattern (XRPD) substantially as shown in figure 1.
In some embodiments, form II of the compound of formulas A-N loses 0.7-0.8% weight during heating to 150 ℃.
In some embodiments, form II of the compound of formulas A-N has a differential scanning calorimetry curve that is free of melting signals prior to 210 ℃.
In some embodiments, form II of the compound of formulas A-N has a TGA-DSC profile substantially as shown in FIG. 2.
In some embodiments, form ii of the compound of formulas a-N is a short rod crystal.
In some embodiments, form ii of the compound of formulas a-N has a PLM image substantially as shown in figure 3.
The invention also provides a preparation method of the crystal form II of the compound shown in the formulas A-N, which comprises the following steps:
suspending the crude product of the compound shown in the formula A-N in a single solvent or a binary solvent for 1-7 days, separating solids, and drying to obtain a crystal form II of the compound shown in the formula A-N.
The crude compounds of the formula A-N according to the invention can be prepared by the methods described in the examples of WO 2020173495A.
According to the preparation method of the invention, the single solvent is selected from: 4-methyl-2-pentanone, isopropyl acetate, methyl tert-butyl ether, ethyl acetate, chloroform, ethylene glycol dimethyl ether; the binary solvent is selected from: methanol-ethylene glycol dimethyl ether (volume ratio is 1:5), ethylene glycol monomethyl ether-ethylene glycol dimethyl ether (volume ratio is 1:5).
According to the preparation method of the invention, the suspension temperature is 20-50 ℃.
According to the preparation method of the present invention, the suspension time is preferably 3 to 7 days.
According to the preparation method of the invention, the separation step comprises the steps of separating the obtained crystal form II of the compound shown in the formulas A-N from the crystallization liquid by adopting a proper method such as filtration, centrifugation and the like.
According to the preparation method of the present invention, the drying method may employ any suitable known method, preferably reduced pressure (vacuum) drying. Specific drying conditions are, for example, a temperature of preferably 40 to 80 ℃; the pressure is preferably vacuum degree > 0.090Mpa; the drying time is preferably 1 to 50 hours, more preferably 2 to 40 hours. Regardless of the drying means, the residual solvent content in the obtained product is suitable for meeting the quality standard.
In another aspect, the invention also relates to pharmaceutical compositions comprising form II of the compounds of formulas A-N.
In a further aspect, the invention also relates to the use of form ii of a compound of formula a-N or a pharmaceutical composition comprising form ii of a compound of formula a-N for the manufacture of a medicament for inhibiting aldose reductase activity in a subject, e.g. for promoting healthy aging of skin, treating skin disorders, treating angiogenic disorders such as cancer, treating tissue damage, treating cardiovascular disorders, treating renal disorders, treating evolving myocardial infarction, treating various other disorders such as complications due to diabetes. Such conditions may include, but are not limited to, atherosclerosis, coronary artery disease, diabetic nephropathy, diabetic neuropathy, diabetic retinopathy, skin infection, peripheral vascular disease, stroke, diabetic cardiomyopathy, galactosylation and the like.
In a further aspect, the invention also relates to a pharmaceutical composition of form ii of the compound of formulas a-N as described above or of form ii of the compound of formulas a-N as described above for inhibiting aldose reductase activity in a subject, e.g., promoting healthy aging of the skin, treating skin disorders, treating angiogenic disorders such as cancer, treating tissue damage, treating cardiovascular disorders, treating renal disorders, treating myocardial infarction that is developing, treating complications resulting from various other disorders such as diabetes. Such conditions may include, but are not limited to, atherosclerosis, coronary artery disease, diabetic nephropathy, diabetic neuropathy, diabetic retinopathy, skin infection, peripheral vascular disease, stroke, diabetic cardiomyopathy, galactosylation and the like.
In yet another aspect, the invention also relates to a method of treating a disorder in a subject by administering to the subject form II of a compound of formulas A-N or a pharmaceutical composition comprising form II of a compound of formulas A-N as described above, e.g., inhibiting aldose reductase activity in a subject, e.g., promoting healthy aging of skin, treating a skin disorder, treating an angiogenic disorder, e.g., cancer, treating tissue damage, treating a cardiovascular disorder, treating a renal disorder, treating an evolving myocardial infarction, treating various other disorders, e.g., complications resulting from diabetes. Such conditions may include, but are not limited to, atherosclerosis, coronary artery disease, diabetic nephropathy, diabetic neuropathy, diabetic retinopathy, skin infection, peripheral vascular disease, stroke, diabetic cardiomyopathy, galactosylation and the like.
The above "subjects" and "patients" include all members of the animal kingdom including, but not limited to, mammals (e.g., mice, rats, cats, monkeys, dogs, horses, pigs, etc.) and humans.
Advantageous effects
The present invention provides crystalline form ii of a compound of formula a-N. The inventors have unexpectedly found that the crystalline form can be obtained in an organic solvent, is easy to dry and has good solubility, stable quality, stable thermodynamics, small relative hygroscopicity and easy to prepare into a medicament.
Drawings
FIG. 1 is an XRPD pattern for form II of a compound of formulae A-N.
FIG. 2 is a TGA-DSC spectrum of form II of the compound of formulas A-N.
FIG. 3 is a PLM graph of form II of a compound of formulas A-N.
Detailed Description
The technical scheme of the invention will be further described in detail below with reference to specific embodiments. The following examples are illustrative only and are not to be construed as limiting the scope of the invention. All techniques implemented based on the above description of the invention are intended to be included within the scope of the invention.
Unless otherwise indicated, the starting materials and reagents used in the following examples were either commercially available or may be prepared by known methods.
In the following examples, the detection method of XRPD, TGA, DSC, PLM, DVS is as follows:
1. XRPD detection method
Instrument: german BRUKER D8 advanced X-ray powder diffractometer (BRUKER GER)
Conditions are as follows: cu-K alpha radiation, tube pressure of 40kV, tube flow of 40mA,2 theta scanning range of 3-45 degrees, scanning step length of 0.02 degrees, exposure time of 0.12 seconds, and sample disc as zero background sample disc.
2. TGA detection method
Instrument: TA Discovery 55 thermogravimetric analyzer (TA, US)
The method comprises the following steps: 2-5mg of sample was placed in an equilibrated open aluminum sample pan and weighed automatically in a TGA furnace. The sample was warmed to the final temperature at a rate of 10 ℃/min with a nitrogen purge rate of 60mL/min at the sample and 40mL/min at the balance.
3. DSC detection method
Instrument: TA Discovery 2500 differential scanning calorimeter (TA, US)
The method comprises the following steps: 1-2mg of the sample was accurately weighed and placed in a perforated DSC Tzero sample pan, and the temperature was raised to the final temperature at a rate of 10 ℃/min, with a nitrogen purge rate in the oven of 50mL/min.
4. PLM detection method
Instrument: motic BA310Met polarizing microscope (Motic, CN)
The method comprises the following steps: a small amount of sample is placed on a glass slide, and a proper lens is selected to observe the appearance of the sample.
5. Dynamic moisture desorption analysis (DVS) detection method
Instrument: DVS Intrinsic (SMS, UK).
The method comprises the following steps: the test adopts a gradient mode, the humidity change is 50% -95% -0% -50%, the humidity change amount of each gradient is 10% in the range of 0% -90%, the gradient end point is judged in a dm/dt mode, and the dm/dt is less than 0.002% and maintained for 10 minutes to be the gradient end point.
Preparation example 1 preparation of Compounds of formula A-N
4.5g of crude compound of formula A-N was prepared by the method described in example 1 of WO 2020173495A.
PLM images showed that the crystalline forms of formulas A-N obtained in preparation example 1 were short rod-like crystals, generally smaller than 10 μm in particle size, and were easily aggregated. DVS results showed that the crystalline form of formula a-N obtained in preparation 1 increased by 20.91% at 95% humidity, 3.34% at 0% humidity, and 16.49% on moisture absorption back to 50% humidity.
Example 1: preparation of form II of the Compound of formulas A-N
Crude product (1.0432 g) of the compound of formula A-N obtained in preparation example 1 and 4-methyl-2-pentanone (75 mL) are added into a reaction bottle, stirred to form a suspension, heated to 50 ℃, stirred for 24h under suspension, centrifugally separated, and the obtained solid is dried in vacuum at 40 ℃ for 16h to obtain crystal form II (901 mg) of the compound of formula A-N.
The obtained crystal form II shows good crystallinity, the XRPD characterization spectrogram of the crystal form II is basically shown in figure 1, and the characterization data are shown in table 1. The DSC-TGA test results are shown in FIG. 2, and the test results show that the sample does not contain crystallization water or crystallization solvent, loses weight by 0.783% during heating to 150 ℃, has no obvious melting signal before 210 ℃ and can be decomposed above 210 ℃. The PLM image shows the result as shown in FIG. 3, and the image shows that the crystal form II is a short rod-shaped crystal, the particle size is generally smaller than 10 mu m, and the crystal form II is slightly aggregated. DVS results showed that form ii had a weight gain of 18.94% at 95% humidity, a weight loss of 1.73% at 0% humidity, and a hygroscopic weight gain of 2.27% at return to 50% humidity.
Table 1 example 1 form ii sample XRPD characterization data
Examples 2 to 6: preparation of crystalline form II of the Compound of formulas A-N (Single solvent)
A certain amount of crude compound of formula A-N obtained in preparation example 1 was weighed, suspended and stirred in a single solvent as listed in Table 2 to obtain crystal form II of compound of formula A-N.
TABLE 2 Single solvent preparation of Crystal form II of Compound of formulas A-N
Examples | Sample size (mg) | Solvent(s) | Volume (mL) | Temperature (. Degree. C.) | Time | Results |
2 | 19.6 | 4-methyl-2- |
10 | Room temperature | For 7 days | Crystal form II |
3 | 20.1 | Acetic |
10 | Room temperature | For 7 days | Crystal form II |
4 | 20.0 | Methyl tert- |
10 | Room temperature | For 7 days | Crystal form II |
5 | 20.5 | Acetic acid ethyl ester | 3 | 50 | 1 day (24 h) | Crystal form II |
6 | 19.7 | Chloroform (chloroform) | 3 | 50 | 1 day (24 h) | Crystal form II |
Examples 7 to 8: preparation of crystalline form II of the Compound of formulas A-N (binary solvent)
A certain amount of crude compound of formula a-N obtained in preparation example 1 was weighed, suspended and stirred in a binary solvent as listed in table 3 to obtain crystal form ii of compound of formula a-N.
TABLE 3 binary solvent preparation of form II of the Compound of formulas A-N
Test example 1: stability study
20mg of the form II sample obtained in example 1 was weighed into a weighing flask, placed in a solid state stability study under conditions of high temperature (60 ℃) and light (25 ℃,4500 Lux), sampled at 7 days and 15 days for XRPD characterization, and the results are shown in Table 4.
TABLE 4 stability test results for form II
The results show that the crystal form II is unchanged under the conditions of high temperature (60 ℃) and illumination (25 ℃,4500 Lux) for 15 days, and the crystal form is stable.
Test example 2: solubility test
The form II sample obtained in example 1 and the form sample obtained in preparation example 1 were added with buffers of different pH (the preparation process of the pH buffers is shown in Table 5) and water to prepare suspensions, and after shaking at constant temperature of 25℃for 24 hours, the suspensions were centrifuged, the supernatants were filtered with a 0.22 μm aqueous filter, and the amounts of the dissolved samples and the amounts of the solvents were recorded to calculate the solubilities of the samples. The solubility test results are shown in Table 6.
TABLE 5 preparation of buffers
TABLE 6 solubility test results for form II and preparation example 1 forms
Test example 3: competitive suspension experiments
The crystal form II of the compound of the formula A-N obtained in example 1 and the crystal form of the compound of the formula A-N obtained in preparation were subjected to competitive suspension experiments in ethyl acetate and 4-methyl-2-pentanone at low temperature (10 ℃), room temperature (25 ℃) and high temperature (60 ℃), respectively, and the results are shown in Table 7:
TABLE 7 competitive suspension results
In conclusion, the crystal form II of the compound of the formula A-N has good solubility, stable quality, stable thermodynamics, small relative hygroscopicity and easy drug-taking.
Claims (10)
2. Form ii of the compound of formula a-N according to claim 1, characterized in that the X-ray powder diffraction expressed in terms of 2Θ has characteristic peaks at 5.2±0.2°, 10.7±0.2°, 14.4±0.2°, 21.6±0.2°, 24.7±0.2°, 26.0±0.2°, 27.1±0.2° using Cu-ka radiation, or
Using Cu-ka radiation, X-ray powder diffraction expressed in terms of 2θ has characteristic peaks at 5.2±0.2°, 10.7±0.2°, 13.4±0.2°, 14.4±0.2°, 16.3±0.2°, 18.0±0.2°, 21.6±0.2°, 22.5±0.2°, 23.2±0.2°, 24.7±0.2°, 26.0±0.2°, 27.1±0.2°, 30.2±0.2°, 31.6±0.2°, or
Using Cu-ka radiation, an X-ray powder diffraction pattern substantially as shown in figure 1.
3. Form ii of the compound of formulae a-N according to claim 1, characterized in that its thermogravimetric analysis profile loses weight 0.7-0.8% during heating to 150 ℃, or
Having a TGA-DSC profile substantially as shown in figure 2.
4. Form ii of the compound of formulae a-N according to claim 1, characterized in that it is a short rod-like crystal.
5. The process for preparing crystalline form ii of a compound of formula a-N according to any one of claims 1-4, comprising the steps of: suspending the crude product of the compound shown in the formula A-N in a single solvent or a binary solvent for 1-7 days, separating solids, and drying to obtain a crystal form II of the compound shown in the formula A-N.
6. The method of claim 5, wherein the single solvent is selected from the group consisting of: 4-methyl-2-pentanone, isopropyl acetate, methyl tert-butyl ether, ethyl acetate, chloroform, ethylene glycol dimethyl ether; the binary solvent is selected from: methanol-ethylene glycol dimethyl ether (volume ratio is 1:5), ethylene glycol monomethyl ether-ethylene glycol dimethyl ether (volume ratio is 1:5).
7. The method according to claim 5, wherein the temperature of the suspension is 20 to 50 ℃.
8. The method according to claim 5, wherein the suspension is carried out for 3 to 7 days.
9. A pharmaceutical composition comprising form ii of a compound of formulae a-N according to any one of claims 1-4.
10. The use of a crystalline form II of a compound of formula A-N as claimed in any one of claims 1 to 4 or of a pharmaceutical composition as claimed in claim 9 for the preparation of a medicament for the treatment of diseases associated with inhibition of aldose reductase activity,
preferably, the disease comprises: atherosclerosis, coronary artery disease, diabetic nephropathy, diabetic neuropathy, diabetic retinopathy, skin infection, peripheral vascular disease, stroke, diabetic cardiomyopathy, and galactosylemia.
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