CN106986874A - (1H-pyrazolo [3,4-d ] pyrimidine) -4-amino derivatives and their use as IDO inhibitors in the manufacture of medicaments - Google Patents

(1H-pyrazolo [3,4-d ] pyrimidine) -4-amino derivatives and their use as IDO inhibitors in the manufacture of medicaments Download PDF

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CN106986874A
CN106986874A CN201610040272.3A CN201610040272A CN106986874A CN 106986874 A CN106986874 A CN 106986874A CN 201610040272 A CN201610040272 A CN 201610040272A CN 106986874 A CN106986874 A CN 106986874A
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ido
amino
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pyrimidine
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CN106986874B (en
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钱珊
王周玉
李国菠
杨羚羚
张曼
王伟
何彦颖
何涛
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Xihua University
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D487/00Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02Heterocyclic 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
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Abstract

The invention discloses a (1H-pyrazolo [3,4-d ] pyrimidine) -4-amino derivative, a preparation method of the compound and application of the compound as an IDO inhibitor. The compound of the present invention can be used for preventing and/or treating various diseases, such as Alzheimer disease, cataract, infection related to cell immune activation, autoimmune disease, AIDS, cancer, depression or tryptophan metabolism disorder, etc.

Description

(1H- pyrazoles [3,4-d] pyrimidine) -4- aminoderivatives and its as IDO inhibitor in medicine system Purposes in standby
Technical field
The present invention relates to 1H- pyrazoles [3,4-d] pyrimidine) -4- aminoderivatives, further relate to its preparation method and suppress as IDO The purposes of agent.
Background technology
IDO (Indoleamine 2,3-dioxygenase, IDO) is the indoles amines such as catalysis tryptophan Indole ring oxicracking in molecule, makes it by the rate-limiting enzyme of kynurenine approach catabolism.
IDO plays an important role in tumour immunity exemption and tumour generating process.Under normal circumstances, IDO is in vivo Low expression level, and the high expression IDO that most of tumour cells can then be constituted, N- formyls dog urine is converted into by L-Trp Propylhomoserin, reduces the Tryptophan concentration in cell micro-environment so that the T cell synthesis that tryptophan is relied on was stagnated in the G1 phases, T cell propagation is suppressed, so as to inhibit body immune system to the lethal effects of tumor tissues.Meanwhile, IDO effects There is cytotoxicity in the metabolite of lower tryptophan, can produce direct dissolution to T cell.
Therefore, the degraded of near tumor cells tryptophan can effectively be prevented by suppressing IDO activity, promote T cell Propagation, so as to strengthen attacking ability of the body to tumour cell.Also, IDO inhibitor can also be shared with chemotherapeutics, The drug resistance of tumour cell is reduced, so as to strengthen the antitumor activity of conventional cytotoxic therapy.Take IDO inhibitor simultaneously Also the curative effect of the therapeutic vaccine of cancer patient can be improved.
Except being played an important role in terms of tumor cell drug resistance, IDO is also related to a variety of and cellular immunity activation The pathogenesis of disease is closely related.IDO have been found to be the infection related to cellular immunity activation, malignant tumour, from The target of the major diseases such as body immunity disease, AIDS.Meanwhile, suppress IDO still for the nervous system disease Such as depression, the critical treatment strategy of the patient of Alzheimer disease.Therefore, IDO inhibitor has wide clinic should Use prospect.
The content of the invention
To solve the above problems, invention broadly provides the new IDO inhibitor class medicine of a class, they are (1H- Pyrazoles [3,4-d] pyrimidine) -4- aminoderivatives are the substitutions on ammonia nitrogen.
The invention provides a kind of compound or its pharmaceutically acceptable salt or its solvate, the compound structure As shown in formula (I):
Wherein, R1Selected from H, halogen or C1~C4Alkyl;
R2Selected from substituted or non-substituted aryl, cycloalkyl, heteroaryl or heterocyclic radical, the substituted aryl, cycloalkyl, Heteroaryl or heterocyclic radical are separately by one or more selected from-(CH2)mCOOH, halogen, hydroxyl, amino, nitro, The substituent of alkyl is replaced;
N=1,2 or 3;
M=0,1,2 or 3.
Further, the R2Selected from phenyl or substituted phenyl, the substituted phenyl is selected from by one or more -(CH2)mCOOH, halogen, hydroxyl, amino, nitro, the substituent of alkyl are replaced;M=0 or 1.
Further, the R2Selected from one of following radicals:
Further, R1Selected from H or methyl.
Further, the structure of the compound is as follows:
Present invention also offers the method that one kind prepares the formula (I) compound, comprise the following steps:
It is raw material with compound 9 and compound 10, is dissolved in organic solvent, it is anti-in the presence of inert gas environment and alkali Should, purifying obtains formula (I) compound.
As a kind of specific embodiment, during reaction, compound 9 is slightly excessive.Compound 9 can be according to of the invention specific real Applying the synthesis of the method in mode can also synthesize according to method of the prior art.
Further, the alkali is selected from organic base or inorganic base, and the organic base is selected from triethylamine or pyridine, the inorganic base Select sodium acid carbonate, sodium carbonate or sodium hydroxide.
Further, the organic solvent is selected from dimethylformamide, tetrahydrofuran, ethyl acetate, acetone or dichloromethane.
For example, in specific embodiment of the present invention, above-claimed cpd 1a, 1b, 1c and 1d are prepared by following routes Obtain:
Present invention also offers the compound or its pharmaceutically acceptable salt or its prodrug or its solvate in system Purposes on standby IDO inhibitor class medicine.
Further, the medicine is prevention and/or treatment Alzheimer disease, cataract, cellular immunity activation correlation The abnormal medicine of infection, autoimmune disease, AIDS, cancer, depression or tryptophan metabolism.
Present invention also offers a kind of pharmaceutical composition, it be described compound or its pharmaceutically acceptable salt for activity into Point, add the preparation that pharmaceutically acceptable auxiliary material is prepared from.
Wherein, the composition is treatment or prevention and/or treatment Alzheimer disease, cataract, cellular immunity activation phase The abnormal medicine of the infection of pass, autoimmune disease, AIDS, cancer, depression or tryptophan metabolism
C of the present invention1~C4Alkyl refer to the alkyl of the straight or branched with 1~4 carbon atom, including methyl, Ethyl, propyl group, isopropyl, butyl, isobutyl group, the tert-butyl group, sec-butyl etc..
The prodrug is the derivative of aforesaid compound, and their own may have weaker activity or even without activity, but It is upon administration, to be converted to corresponding life (such as by metabolism, solvolysis or other mode) in physiological conditions Thing activity form.
Described preparation can include injection or oral formulations.
Key intermediate and compound in the present invention are separated and purified, and used mode is commonly used in organic chemistry Isolation and purification method.
The present invention one or more compounds can be used in conjunction with one another, also may be selected by the present invention compound with it is any its Its active agent is used in combination, for preparing IDO inhibitor., can be by these if using one group of compound Compound is administered simultaneously, respectively or in an orderly manner to study subject.
Pharmaceutically acceptable auxiliary material of the present invention, refers to the material being included in addition to the active ingredient (s in formulation.
Tests prove that, pyrido [3, the 4-b] indole derivatives that the 9- positions that the present invention is provided replace has excellent to IDO Inhibitory action, can be used for preventing and/or treats a variety of diseases, such as Alzheimer disease, cataract, cellular immunity activation Related infection, autoimmune disease, AIDS, cancer, depression or tryptophan metabolism exception etc..
Obviously, according to the above of the present invention, according to the ordinary technical knowledge and customary means of this area, this is not being departed from Invent under the premise of above-mentioned basic fundamental thought, the modification of other diversified forms can also be made, replace or change.
The embodiment of form, is described in further detail again to the above of the invention by the following examples. But the scope that this should not be interpreted as to above-mentioned theme of the invention is only limitted to following example.It is all real based on the above of the present invention institute Existing technology belongs to the scope of the present invention.
Embodiment
Raw material and reagent are that analysis is pure:Raw materials used to be purchased from Chengdu Rui Ouke Science and Technology Ltd.s, reagent is purchased from Chengdu section dragon Reagent Company.
The synthesis of intermediate 6- methyl isophthalic acids H- pyrazoles [3,4-d] pyrimidine -4 (7H) -one (8b) of the present invention of embodiment 1
Synthetic route is as follows:
By compound (7) (CAS:5334-31-6,1.0g, 7.94mmol) add glacial acetic acid (6mL) and poly phosphorus In the mixed solution of sour (6mL), in reaction 7 hours at 120 DEG C.Reaction solution is cooled to room temperature, pours into 70mL water In, it is 5 with 50% NaOH aqueous solution regulation pH, has white solid precipitation, filter, filter cake is rinsed with a large amount of water. Filter cake is suspended in methyl alcohol, stirred 10 minutes, filtering, filter cake is washed with 50mL ethyl acetate.Filter cake reduced vacuum Dry white solid 887.5mg, yield 76%.
The compounds of this invention 1a of embodiment 2 preparation
Synthetic route is as follows:
8a(CAS:315-30-0) can directly it buy.
1st, compound 9a synthesis
By compound 8a (0.5g, 3.68mmol) in the lower instillation thionyl chloride (15ml) of argon gas protection and DMF (1.5mL), 80 DEG C of back flow reactions are warming up to after completion of dropping 2 hours.Reaction solution is cooled to room temperature, is poured slowly into the 150mL being stirred vigorously In frozen water, extracted three times with 100mL ethyl acetate, merge organic phase, washed with saturated common salt, anhydrous magnesium sulfate is dried, It is spin-dried for obtaining yellow powder 9a 367mg, yield 64%.
2nd, compound 1a synthesis
Compound 9a (0.32mmol) and compound 10a (40.6mg, 0.27mmol) are dissolved in DMF (1.5mL), plus Enter triethylamine (66.8 μ L, 0.484mmol), reacted 4 hours in 80 DEG C under argon gas protection.Decompression rotation solvent to the greatest extent, residual Thing adds 8mL ethyl acetate, with 4mL water washings three times.Organic phase is dried through anhydrous magnesium sulfate, is spin-dried for post (DCM:MeOH=10:1) faint yellow solid 31.1mg, yield 43%, are obtained.
3- ((1H- pyrazoles [3,4-d] pyrimidine -4- amino) methyl) benzoic acid (1a)1H-NMR(400MHz,d6-DMSO,ppm): δ13.44(br,2H,COOH and pyrazole NH),8.81(m,1H,amino),8.23(s,1H,pyrimidine-CH), 8.17 (s, 1H, pyrazole-CH), 7.94 (s, 1H, Ar-H2), 7.83 (d, 1H, J=7.6Hz, Ar-H6), 7.46 (d, 1H, J =7.6Hz, Ar-H4), 7.46 (t, 1H, J=7.6Hz, Ar-H5), 4.80 (d, 2H, J=6.0Hz, benzyl-CH2). ESI-MS:270.09[M+H].
The compounds of this invention 1b of embodiment 3 preparation
Compound 1b is synthesized according to method similar in embodiment 2, difference is with compound 9b alternative compounds 9a, Obtain yellow solid 1b, yield 41%.
4- ((1H- pyrazoles [3,4-d] pyrimidine -4- amino) methyl) benzoic acid (1b)1H-NMR(400MHz,d6-DMSO,ppm): δ14.50(s,1H,br,COOH),13.41(s,1H,pyrazole NH),8.79(m,1H,amino),8.23(s,1H, Pyrimidine CH), 8.17 (s, 1H, pyrazole CH), 7.91 (d, 2H, J=7.6Hz, Ar-H2 and Ar-H6), 7.46 (d, 2H, J=7.6Hz, Ar-H3 and Ar-H5), 4.82 (d, 2H, J=5.2Hz, benzyl-CH2).ESI-MS:270.09[M+ H].
The compounds of this invention 1c of embodiment 4 preparation
Compound 1c is synthesized according to method similar in embodiment 2, difference is with compound 9b alternative compounds 9a, with Compound 10b alternative compounds 10a, obtain yellow solid 1c, yield 36%
3- ((6- methyl 1H- pyrazoles [3,4-d] pyrimidine -4- amino) methyl) benzoic acid (1c)1H-NMR(400MHz,d6-DMSO, ppm):δ 14.58 (s, 1H, pyrazole-NH), 12.92 (br, 1H, COOH), 11.43 (t, 1H, J=6.0Hz, amino), 8.52 (s, 1H, pyrazole-CH), 8.02 (s, 1H, Ar-H2), 7.98 (d, 1H, J=7.6Hz, Ar-H6), 7.56 (d, 1H, J =7.6Hz, Ar-H4), 7.50 (t, 1H, J=7.6Hz, Ar-H5), 5.02 (d, 2H, J=6.0Hz, benzyl-CH2),2.33(s, 1H,CH3).ESI-MS:284.11[M+H].
The compounds of this invention 1d-k of embodiment 5 preparation
Compound 1d is synthesized according to method similar in embodiment 2, difference is with compound 9b alternative compounds 9a, with Compound 10b alternative compounds 10a, obtain yellow solid 1d, yield 39%.
4- ((6- methyl isophthalic acid H- pyrazoles [3,4-d] pyrimidine -4- amino) methyl) benzoic acid (1d)1H-NMR(400MHz,d6-DMSO, ppm):δ 14.74 (s, 1H, pyrazole-NH), 12.94 (br, 1H, COOH), 11.39 (t, 1H, J=6.0Hz, amino), 8.55 (s, 1H, pyrazole-CH), 7.93 (d, 2H, J=8.3Hz, Ar-H2 and Ar-H6), 7.46 (d, 2H, J=8.3Hz, Ar-H3 and Ar-H5), 5.08 (d, 2H, J=6.0Hz, benzyl-CH2),2.34(s,1H,CH3).ESI-MS:284.11 [M+H].
Corresponding raw material is selected, compound 1e-k is prepared in a similar way, as a result and is characterized as below:
Yellow solid, yield 41%.1H-NMR(400MHz,d6-DMSO,ppm):δ13.52(s,1H,pyrazole NH), 8.64(m,1H,amino),8.17(s,1H,pyrimidine CH),8.11(s,1H,pyrazole CH),7.45-6.67(m,5H, ), Ar-H 4.12 (d, 2H, J=5.2Hz, benzyl-CH2).ESI-MS:226.09[M+H].
Yellow solid, yield 49%.1H-NMR(400MHz,d6-DMSO,ppm):δ13.52(s,1H,pyrazole NH), 8.64 (m, 1H, amino), 8.19 (s, 1H, pyrimidine CH), 8.12 (s, 1H, pyrazole CH), 7.45 (d, 2H, J= 7.6Hz, Ar-H2 and Ar-H6), 7.12 (d, 2H, J=7.6Hz, Ar-H3 and Ar-H5), 4.01 (d, 2H, J=5.2Hz, benzyl-CH2),2.33(s,3H,CH3).ESI-MS:240.12[M+H].
Yellow solid, yield 46%.1H-NMR(400MHz,d6-DMSO,ppm):δ13.44(s,1H,pyrazole NH), 8.80 (m, 1H, amino), 8.25 (s, 1H, pyrimidine CH), 8.19 (s, 1H, pyrazole CH), 7.98 (d, 2H, J= 7.6Hz, Ar-H2 and Ar-H6), 7.42 (d, 2H, J=7.6Hz, Ar-H3 and Ar-H5), 4.85 (d, 2H, J=5.2Hz, benzyl-CH2).ESI-MS:260.06[M+H].
Yellow solid, yield 52%.1H-NMR(400MHz,d6-DMSO,ppm):δ13.52(s,1H,pyrazole NH), 8.45 (m, 1H, amino), 8.07 (s, 1H, pyrimidine CH), 8.01 (s, 1H, pyrazole CH), 7.23 (d, 2H, J= 7.6Hz, Ar-H2 and Ar-H6), 7.07 (d, 2H, J=7.6Hz, Ar-H3 and Ar-H5), 4.03 (d, 2H, J=5.2Hz, benzyl-CH2).ESI-MS:242.12[M+H].
Yellow solid, yield 55%.1H-NMR(400MHz,d6-DMSO,ppm):δ14.59(s,1H,pyrazole-NH), 12.93 (br, 1H, COOH), 11.41 (t, 1H, J=6.0Hz, amino), 8.51 (s, 1H, pyrazole-CH), 8.00 (s, 1H, ), Ar-H2 7.87 (d, 1H, J=7.6Hz, Ar-H6), 7.34 (d, 1H, J=7.6Hz, Ar-H5), 4,98 (d, 2H, J=6.0 Hz,benzyl-CH2).ESI-MS:286.10[M+H].
Yellow solid, yield 46%.1H-NMR(400MHz,d6-DMSO,ppm):δ14.74(s,1H,pyrazole-NH), 12.94 (br, 1H, COOH), 11.23 (t, 1H, J=6.0Hz, amino), 8.51 (s, 1H, pyrazole-CH), 7.86 (d, 2H, J=8.3Hz, Ar-H2 and Ar-H6), 7.23 (d, 2H, J=8.3Hz, Ar-H3 and Ar-H5), 4.89 (d, 2H, J=6.0 Hz,CH2NH),3.68(s,2H,CH2COOH),2.34(s,1H,CH3).ESI-MS:298.11[M+H].
Yellow solid, yield 41%.1H-NMR(400MHz,d6-DMSO,ppm):δ14.51(s,1H,pyrazole-NH), 12.93 (br, 1H, COOH), 11.41 (t, 1H, J=6.0Hz, amino), 8.53 (s, 1H, pyrazole-CH), 8.02 (s, 1H, ), Ar-H2 7.95 (d, 1H, J=7.6Hz, Ar-H6), 7.52 (d, 1H, J=7.6Hz, Ar-H4), 7.54 (t, 1H, J=7.6 Hz,Ar-H5),4.23(m,2H,CH2),2.94(m,2H,CH2).ESI-MS:284.11[M+H].
Inhibitory activity of the compounds of this invention of embodiment 6 to IDO albumen
Recombined human IDO albumen is obtained through Bacillus coli expression, nickel affinity chromatographic purifying.Compound is real to IDO inhibitory activity Test using L-Trp as substrate.Testing compound is dissolved in 10%DMSO solution and is configured to dilution.Take 5uL Dilution is added in 100 μ L reaction systems.Contain 0.5%DMSO, 40nmol/L IDO in 100 μ L reaction systems, 900 μm of ol/L L-Trps, and other reaction concurrent (kaliumphosphate buffer, ascorbic acid, catalases, Asia Methyl blue).Reactant mixture adds trichloroacetic acid terminating reaction in being cultivated 180 minutes under 37 degree.Use Tecan Infinite M1000 ELIASAs determine the concentration of the N- formoxyl kynurenins produced at 321nm, so as to evaluate compound To IDO inhibitory activity.Negative control thing is to replace IDO with 5 μ L buffer solution.The IDO inhibitor of clinical III phases INCB024360 verifies whether the IDO Activity determinations system that this experiment is set up is effective as positive control.
Each concentration sets up three wells.Data analysis is carried out using software Graphpad Prism.Without testing compound Reaction solution in, absorbance (At) it is defined as 100% activity.In the reaction solution without IDO, absorbance (Ab) fixed Justice is 0% activity.For testing compound, active calculation formula is:%activity=[(A-Ab)/(At-Ab)] × 100, Wherein A is the absorbance of the reaction solution containing testing compound.The calculation formula of inhibiting rate is:%inhibition=100-% activity.
By above experimental method, the inhibitory activity that the part of compounds in the present invention is directed to IDO is tested.Specific portion Inhibitory activity of the compound under 1 μM, 10 μM, 100 μM of concentration is shown in Table 1.
Wherein A represents that inhibiting rate is more than 30%, B and represents that inhibiting rate 20%-30%, C represent that inhibiting rate is 10%-20%; D represents that inhibiting rate is less than 10%;Inhibiting rate of the positive control when concentration is 0.05 μM is 46%.
Inhibitory activity of the compounds of this invention of table 1 to IDO
As a result show, compound of the invention has certain inhibitory activity to IDO.Wherein R2It is selected fromWhen, effect is preferable.
In summary, (1H- pyrazoles [3,4-d] pyrimidine) -4- aminoderivatives that the present invention is provided, have excellent suppression to IDO Make and use, can be used for preventing and/or treat a variety of diseases, such as Alzheimer disease, cataract, cellular immunity activation phase Infection, autoimmune disease, AIDS, cancer, depression or tryptophan metabolism exception of pass etc..

Claims (12)

1. a kind of compound or its pharmaceutically acceptable salt or its solvate, the structure such as formula (I) of the compound It is shown:
Wherein, R1Selected from H, halogen or C1~C4Alkyl;
R2Selected from substituted or non-substituted aryl, cycloalkyl, heteroaryl or heterocyclic radical, the substituted aryl, cycloalkyl, Heteroaryl or heterocyclic radical are separately by one or more selected from-(CH2)mCOOH, halogen, hydroxyl, amino, nitro, The substituent of alkyl is replaced;
N=1,2 or 3;
M=0,1,2 or 3.
2. compound according to claim 1, it is characterised in that:The R2Selected from phenyl or substituted phenyl, institute Substituted phenyl is stated by one or more selected from-(CH2)mCOOH, halogen, hydroxyl, amino, nitro, the substitution of alkyl Base is replaced;M=0 or 1.
3. compound according to claim 2, it is characterised in that:The R2Selected from one of following radicals:
4. compound according to claim 1, it is characterised in that:R1Selected from H or methyl.
5. compound according to claim 1, it is characterised in that:The structure of the compound is as follows:
6. prepare the method for formula (I) compound described in claim 1, it is characterised in that:Comprise the following steps:
It is raw material with compound 9 and compound 10, is dissolved in organic solvent, it is anti-in the presence of inert gas environment and alkali Should, purifying obtains formula (I) compound.
7. method according to claim 6, it is characterised in that:The alkali is selected from organic base or inorganic base, described to have Machine alkali is selected from triethylamine or pyridine, the inorganic base selection sodium acid carbonate, sodium carbonate or sodium hydroxide.
8. the method according to claim 6 or 7, it is characterised in that:The organic solvent be selected from dimethylformamide, Tetrahydrofuran, ethyl acetate, acetone or dichloromethane.
9. the method according to claim any one of 6-8, it is characterised in that:The temperature of the reaction is 25 DEG C -100 DEG C.
10. any one of the claim 1-5 compounds or its pharmaceutically acceptable salt or its prodrug or its solvent Purposes of the compound on IDO inhibitor class medicine is prepared.
11. purposes according to claim 10, it is characterised in that:The medicine is prevention and/or treatment alzheimer ' Silent disease, cataract, cellular immunity activation related infection, autoimmune disease, AIDS, cancer, depression or color The medicine of propylhomoserin metabolic disorder.
12. a kind of pharmaceutical composition, it is characterised in that:It is with the compound or its medicine described in claim any one of 1-5 Acceptable salt is active component on, adds the preparation that pharmaceutically acceptable auxiliary material is prepared from.
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CN110294714A (en) * 2018-03-22 2019-10-01 西华大学 Imidazoles methylamine like derivative and its synthetic method with indoles amine -2,3- dioxygenase (IDO) inhibitor activity
CN110294714B (en) * 2018-03-22 2022-08-26 西华大学 Imidazolemethylamine derivatives with indoleamine-2, 3-dioxygenase (IDO) inhibitor activity and synthesis method thereof

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