WO2021259203A1 - 一种cdk4/6抑制剂的制备方法 - Google Patents
一种cdk4/6抑制剂的制备方法 Download PDFInfo
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- WO2021259203A1 WO2021259203A1 PCT/CN2021/101246 CN2021101246W WO2021259203A1 WO 2021259203 A1 WO2021259203 A1 WO 2021259203A1 CN 2021101246 W CN2021101246 W CN 2021101246W WO 2021259203 A1 WO2021259203 A1 WO 2021259203A1
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- HAWUPFPGLDIOFA-UHFFFAOYSA-N CC(C)C(N(C)OC)=O Chemical compound CC(C)C(N(C)OC)=O HAWUPFPGLDIOFA-UHFFFAOYSA-N 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing three or more hetero rings
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
- C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
- C07D403/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond
Definitions
- This application belongs to the field of drug synthesis, and relates to a method for preparing a CDK4/6 inhibitor, and specifically to a compound of formula (I): 5-fluoro-4-(3-isopropyl-2-methyl-2H-indazole- 5-yl)-nitrogen-(5-(piperazin-1-yl)pyrazol-2-yl)pyrimidin-2-amine preparation method.
- CDKs cyclin-dependent kinases
- the tumor suppressor protein Rb Once the tumor suppressor protein Rb is phosphorylated, it can release its tightly bound transcription factor E2F when it is not phosphorylated. E2F activates further transcription to push the cell cycle through the restriction point (R point) and progress from the G1 phase to the S phase. Entered the cycle of cell proliferation. Therefore, inhibiting CDK4/6 so that it cannot form Cyclin D-CDK4/6 complex can block the progression of the cell cycle from the G1 phase to the S phase, thereby achieving the purpose of inhibiting tumor proliferation.
- ER+ estrogen receptor positive breast cancer
- the overactivity of CDK4/6 is very frequent, and CDK4/6 is a key downstream target of ER signaling.
- Preclinical data show that dual inhibition of CDK4/6 and estrogen receptor (ER) signals has a synergistic effect and can inhibit the growth of estrogen receptor positive (ER+) breast cancer (BC) cells in the G1 phase.
- WO2016141881 discloses a CDK4/6 inhibitor whose structure is as shown in formula (I).
- the compound of formula (I) has an IC50 value of less than 1 nM for CDK4/6, and has good tumor suppressive activity against breast cancer.
- WO2016141881 also discloses a method for preparing the compound of formula (I), and the route is as follows:
- the purpose of this application is to provide a new preparation method of the compound of formula (I).
- the reagents used in the method are economical and easy to obtain, the post-processing of the intermediates does not require silica gel column chromatography, the operation is simple, and the reaction time of each step is short. , The product yield is high, the product purity is high, and it is more suitable for industrial production.
- this application provides a method for preparing a compound of formula (I), including:
- Step 1 Compound SMA-1 reacts with compound SMA-8 to obtain compound SMA-2;
- Step 2 Compound SMA-2 reacts with hydrazine hydrate to obtain compound SMA-3;
- Step 3 Compound SMA-3 undergoes methylation reaction to obtain compound SMA-4;
- Step 4 Compound SMA-4 is reacted with pinacol diborate to obtain compound SMA-5;
- Step 5 Compound SMA-5 reacts with compound SMA-9 to obtain compound SMA-6;
- Step 6 Compound SMA-6 reacts with compound SMA-10 to obtain compound SMA-7;
- Step 7 The compound SMA-7 is reacted to obtain the compound of formula (I).
- step 1 above is performed in the presence of a solvent and a base.
- the solvent in step 1 above is selected from dichloromethane, tetrahydrofuran, dioxane, DMF, DMSO, acetonitrile, diethyl ether, isopropyl ether, methyl tertiary ether, 2-methyltetrahydrofuran, n-hexane and n-hexane.
- One or two or more mixed solvents in heptane preferably one or two or more mixed solvents among tetrahydrofuran, dioxane and n-heptane; more preferably tetrahydrofuran.
- the base in step 1 above is selected from n-butyl lithium, tert-butyl lithium, sodium tert-butoxide, potassium tert-butoxide, lithium diisopropylamide, lithium hexamethyldisilazide , Sodium bis(trimethylsilyl)amide, sodium hydrogen and lithium hydroxide; preferably lithium diisopropylamide, n-butyllithium and lithium hexamethyldisilazide; more preferably diisopropyl Lithium amide.
- the reaction temperature in step 1 above is -75 to -20°C; preferably -75 to -50°C; more preferably -75 to -65°C.
- the reaction time in step 1 above is 2-10 hours; preferably 2-6 hours; more preferably 3-5 hours.
- the molar ratio of compound SMA-1 to compound SMA-8 in step 1 above is 1:1 to 2; preferably 1:1 to 1.5; more preferably 1:1 to 1.4. In some specific embodiments, the molar ratio of compound SMA-1 to compound SMA-8 in step 1 above is about 1:1.33.
- the molar volume ratio of the compound SMA-1 to the solvent in step 1 above is 1 mmol: 0.5 to 1.5 mL; preferably 1 mmol: 1 to 1.5 mL; more preferably 1 mmol: 1 to 1.2 mL. In some specific embodiments, the molar volume ratio of compound SMA-1 to solvent in step 1 is about 1 mmol:1 mL.
- the molar ratio of compound SMA-1 to base in step 1 above is 1:1-3; preferably 1:1.5-3; more preferably 1:1.5-2.1. In some specific embodiments, the molar ratio of compound SMA-1 to base in step 1 above is 1:2.
- the above step 1 includes: dissolving compound SMA-1 and compound SMA-8 in a solvent to form a solution, and then adding a base to react to obtain compound SMA-2.
- the above step 1 further includes: lowering the temperature to -75 to -20°C after forming the solution; preferably -75 to -50°C; more preferably -75 to -65°C. In some embodiments, the above step 1 further includes: the temperature when the alkali is added is -65°C.
- the above step 1 further includes: reacting for 3 hours after the alkali is added.
- the above step 1 further includes the step of adding acid treatment to the reaction solution after the reaction is completed.
- the acid is hydrochloric acid (for example, a 1 mol/L aqueous hydrochloric acid solution).
- the above step 1 further includes the step of separating SMA-2 after adding acid to the reaction solution.
- the above step 1 is: SMA-1, SMA-8 and tetrahydrofuran, stir to dissolve and cool to the internal temperature -75 ⁇ -65°C, control the internal temperature below -65°C and add diisopropyl group After the addition of lithium amide, control the internal temperature -75 ⁇ -65°C to react for 3 hours.
- Add 1 mol/L hydrochloric acid aqueous solution to the reaction solution warm to room temperature after addition, separate the layers, extract the aqueous phase with ethyl acetate, combine the organic phases, wash with water, dry with anhydrous sodium sulfate, filter, and concentrate the filtrate under reduced pressure To dry to get compound SMA-2.
- step 1 also includes: the compound SMA-11 is reacted with the compound SMA-12 to prepare the compound SMA-8.
- the above step of preparing compound SMA-8 is performed in the presence of a solvent and a base.
- the solvent in the step of preparing compound SMA-8 is selected from ethyl acetate, dichloromethane, toluene, chloroform, 1,2-dichloroethane, n-hexane, diethyl ether and methyl tert-butyl ether ; Preferably dichloromethane and methyl tert-butyl ether; more preferably dichloromethane.
- the base in the step of preparing compound SMA-8 is selected from triethylamine, diisopropylethylamine, pyridine, 4-dimethylaminopyridine (DMAP), 1,8-diazabicyclo Undec-7-ene (DBU) and triethylenediamine; preferably triethylamine and diisopropylethylamine; more preferably triethylamine.
- the reaction temperature in the step of preparing compound SMA-8 is 0-30°C; preferably 5-25°C; more preferably 15-25°C. In some specific embodiments, the reaction temperature in the step of preparing compound SMA-8 is about 25°C.
- the reaction time in the step of preparing the compound SMA-8 is 0.5 to 5 hours; preferably 0.5 to 2 hours; more preferably 1 to 2 hours.
- the molar ratio of compound SMA-11 to compound SMA-12 is 1:1 to 2; preferably 1:1 to 1.5; more preferably 1:1 to 1.2. In some specific embodiments, the molar ratio of compound SMA-11 to compound SMA-12 is 1:1.
- the molar volume ratio of compound SMA-11 to the solvent is 1 mmol: 0.2-2 mL; preferably 1 mmol: 0.5-2 mL; more preferably 1 mmol: 0.5-1 mL. In some specific embodiments, the molar volume ratio of compound SMA-11 to solvent is about 1 mmol: 0.5 mL.
- the molar ratio of compound SMA-11 to base is 1:1-3; preferably 1:1.5-3; more preferably 1:1.5-2. In some specific embodiments, the molar ratio of compound SMA-11 to base is about 1:2.
- compound SMA-12 is first mixed with a solvent (for example, mixed at a temperature of -5 to 5°C), and then a base is added (for example, at a temperature below 5°C) Alkali), and then add SMA-11 (for example, add SMA-11 when the temperature is below 5°C).
- a solvent for example, mixed at a temperature of -5 to 5°C
- a base for example, at a temperature below 5°C
- SMA-11 for example, add SMA-11 when the temperature is below 5°C.
- the above steps of preparing compound SMA-8 are: dissolving SMA-12 in dichloromethane, maintaining the temperature at -5 to 5°C, adding triethylamine, and maintaining the temperature below 5°C, After the addition, keep the temperature below 5°C and add SMA-11. After the addition, react at room temperature for 1 hour.
- the above step of preparing compound SMA-8 further includes the step of treating with alkali (for example, sodium bicarbonate) after the reaction is completed.
- alkali for example, sodium bicarbonate
- the compound SMA-8 in step 1 above can also be purchased commercially.
- step 2 above is carried out in the presence of a solvent.
- the solvent in step 2 above is selected from ethylene glycol, N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), diphenyl ether, o-dichlorobenzene, sulfolane, Mesitylene, diethylene glycol dimethyl ether and N-methylpyrrolidone; preferably DMF and ethylene glycol; more preferably ethylene glycol.
- the above step 2 further includes a step of removing water during the reaction.
- the above step 2 is: after the compound SMA-2 is reacted with hydrazine hydrate for a period of time, the water is removed, and the reaction is continued.
- the reaction temperature in step 2 above is 100-200°C; preferably 150-200°C.
- the above step 2 is: the compound SMA-2 and hydrazine hydrate are first reacted at a temperature of 180-200°C or under reflux conditions, and then reacted at a temperature of 150°C. Specifically, there is a step of removing water between the two-stage reaction.
- the reaction time in step 2 above is 2-15 hours; preferably 5-12 hours; more preferably 10-12 hours.
- the above step 2 is: the compound SMA-2 and hydrazine hydrate are first reacted at a temperature of 180-200° C. or reflux conditions for 2 hours, and then at a temperature of 150° C. for 10 hours. Specifically, there is a step of removing water between the two-stage reaction.
- the molar ratio of compound SMA-2 to hydrazine hydrate in step 2 above is 1:1-3; preferably 1:1.5-3; more preferably 1:1.5-2.
- the molar volume ratio of the compound SMA-2 to the solvent in step 2 above is 1 mmol: 0.5 to 1.5 mL; preferably 1 mmol: 1 to 1.5 mL; more preferably 1 mmol: 1 to 1.2 mL.
- the above step 2 is: SMA-2 and hydrazine hydrate are refluxed in the presence of ethylene glycol for 2 hours, the water in the reaction system is removed, and the reaction is performed at 150° C. for 10 hours to obtain compound SMA-3.
- the above step 2 further includes the step of adding water to the reaction system to precipitate compound SMA-3 after the reaction is completed. Further, it also includes the step of beating with purified water.
- step 3 above is performed in the presence of a methylating agent and a solvent.
- the methylating reagent in step 3 above is selected from the group consisting of methyl iodide, dimethyl sulfate, dimethyl carbonate, methyl p-toluenesulfonate, methyl trifluoromethanesulfonate, tetramethyl fluoride Ammonium, trimethyl phosphate, trimethyloxonium tetrafluoroboric acid and 1-methyl-3-p-tolyltriazide; preferably methyl iodide and trimethyloxonium tetrafluoroboric acid; more preferably trimethyloxonium Onium tetrafluoroborate.
- the solvent in step 3 above is selected from one or two or more mixed solvents of ethyl acetate, dichloromethane and acetone; preferably one or two of ethyl acetate and dichloromethane Mixed solvents of more than one kind.
- the solvent in step 3 above is first ethyl acetate and then dichloromethane.
- the solvent in step 3 above is ethyl acetate.
- the above step 3 can also be carried out in the presence of a methylating agent, a base and a solvent.
- the base in step 3 above is selected from potassium carbonate, sodium carbonate, sodium methoxide, sodium ethoxide, potassium bicarbonate, sodium bicarbonate, sodium hydroxide and potassium hydroxide; preferably sodium bicarbonate and hydroxide Sodium; more preferably sodium bicarbonate.
- the reaction temperature in step 3 above is controlled at 10-30°C; preferably 20-30°C; more preferably 25-30°C.
- the reaction time in step 3 above is 5-12 hours; preferably 8-12 hours; more preferably 8-10 hours. In some specific embodiments, the reaction time in step 3 above is about 8 hours.
- the above step 3 is: the compound SMA-3 is reacted with trimethyloxonium tetrafluoroborate to obtain the onium tetrafluoroborate salt of the compound SMA-4, and the onium tetrafluoroborate salt of the compound SMA-4 The reaction is carried out to obtain compound SMA-4.
- the step of reacting the onium tetrafluoroborate salt of the compound SMA-4 to obtain the compound SMA-4 can be carried out in the presence of a base (for example, sodium bicarbonate).
- a base for example, sodium bicarbonate
- the preparation of the onium tetrafluoroborate salt of the above compound SMA-4 is carried out in the presence of a solvent selected from ethyl acetate and acetone; preferably ethyl acetate.
- the preparation of the onium tetrafluoroborate salt of the above compound SMA-4 is carried out in the presence of a solvent selected from ethyl acetate and acetone; preferably ethyl acetate.
- the step of reacting the onium tetrafluoroborate salt of the compound SMA-4 to obtain the compound SMA-4 is carried out in the presence of a solvent selected from dichloromethane and ethyl acetate; preferably dichloromethane ; Or preferably ethyl acetate.
- the above step 3 is: the compound SMA-3 is reacted with trimethyloxonium tetrafluoroborate in the presence of ethyl acetate to obtain the onium tetrafluoroborate salt of the compound SMA-4, and the compound SMA-4 The onium tetrafluoroborate salt is reacted in the presence of dichloromethane and a base to obtain compound SMA-4.
- the above step 3 is: the compound SMA-3 reacts with trimethyloxonium tetrafluoroborate in the presence of ethyl acetate at a temperature of 25 to 30°C to obtain the onium tetrafluoroborate salt of compound SMA-4 , Separate the onium tetrafluoroborate salt of the compound SMA-4, and react the onium tetrafluoroborate salt of the compound SMA-4 with sodium bicarbonate in the presence of dichloromethane and water to obtain the compound SMA-4.
- the molar ratio of compound SMA-3 to methylating agent in step 3 is 1:1 to 3; preferably 1:1 to 2; more preferably 1:1 to 1.2.
- the molar ratio of the compound SMA-3 to the base in the above step 3 is 1:1 to 5; preferably 1:2 to 4; more preferably 1:2.5 to 3.5.
- step 4 above is carried out in the presence of a catalyst, a base and a solvent.
- the catalyst in step 4 above is selected from palladium acetate, 1,2-bis(diphenylphosphino)ethane palladium dichloride, 1,3-bis(diphenylphosphino)propane palladium dichloride , 1,4-bis(diphenylphosphino)butane palladium dichloride, bis(triphenylphosphine)palladium dichloride, bis(cyanobenzene)palladium dichloride, 1,1'-bisdiphenyl Phosphine ferrocene palladium dichloride or tris(dibenzylideneacetone) dipalladium; preferably bis(triphenylphosphine) palladium dichloride or 1,1'-bisdiphenylphosphine ferrocene dichloride Palladium; more preferably 1,1'-bisdiphenylphosphine ferrocene palladium dichloride.
- the base in step 4 above is selected from sodium carbonate, potassium carbonate, cesium carbonate, sodium acetate, potassium acetate, sodium ethoxide, sodium tert-butoxide, potassium tert-butoxide, triethylamine, pyridine, piperidine or N-methylpiperidine; preferably potassium acetate or cesium carbonate; more preferably potassium acetate.
- the solvent in step 4 above is selected from methanol, ethanol, isopropanol, tetrahydrofuran, dioxane, DMF, DMSO, toluene, ethylbenzene, ethylene glycol dimethyl ether, acetonitrile and water.
- One or two or more mixed solvents preferably tetrahydrofuran and dioxane; more preferably dioxane.
- the reaction temperature in step 4 above is 80-120°C; preferably 85-105°C; more preferably 90-105°C. In some specific embodiments, the reaction temperature in step 4 above is 90-95°C.
- the reaction time in step 4 above is 5-15 hours; preferably 8-12 hours; more preferably 8-10 hours. In some specific embodiments, the reaction time in step 4 above is about 9 hours.
- the molar ratio of compound SMA-4 to pinacol diborate in step 4 is 1:1 to 3; preferably 1:1 to 2; more preferably 1:1 to 1.5.
- the molar ratio of the compound SMA-4 to the catalyst in step 4 is 1:0.001 to 0.01; preferably 1:0.002 to 0.008; more preferably 1:0.004 to 0.006.
- the molar ratio of compound SMA-4 to base in step 4 is 1:1-3; preferably 1:1-2; more preferably 1:1.5-2.
- the molar volume ratio of the compound SMA-4 to the solvent in step 4 is 1 mmol: 1-2 mL; preferably 1 mmol: 1-1.5 mL; more preferably 1 mmol: 1.2-1.5 mL.
- the above step 4 is: compound SMA-4 and pinacol biborate in 1,4-dioxane, potassium acetate and 1,1'-bisdiphenylphosphine ferrocene dichloride The reaction is carried out in the presence of palladium to obtain compound SMA-5.
- the above step 4 is: compound SMA-4 and pinacol biborate in 1,4-dioxane, potassium acetate and 1,1'-bisdiphenylphosphine ferrocene dichloride In the presence of palladium, the reaction temperature is 90-95° C. for 9 hours to obtain compound SMA-5.
- step 5 above is carried out in the presence of a catalyst, a base and a solvent.
- the catalyst in step 5 above is selected from palladium acetate, 1,2-bis(diphenylphosphino)ethane palladium dichloride, 1,3-bis(diphenylphosphino)propane palladium dichloride , 1,4-bis(diphenylphosphino)butane palladium dichloride, bis(triphenylphosphine)palladium dichloride, bis(cyanobenzene)palladium dichloride, 1,1'-bisdiphenyl Phosphine ferrocene palladium dichloride or tris(dibenzylideneacetone) dipalladium; preferably bis(triphenylphosphine) palladium dichloride or 1,1'-bisdiphenylphosphine ferrocene dichloride Palladium; more preferably 1,1'-bisdiphenylphosphine ferrocene palladium dichloride.
- the base in step 5 above is selected from sodium carbonate, potassium carbonate, cesium carbonate, sodium acetate, potassium acetate, sodium ethoxide, sodium tert-butoxide, potassium tert-butoxide, triethylamine, pyridine, piperidine or N-methylpiperidine; preferably cesium carbonate or potassium carbonate; more preferably potassium carbonate.
- the solvent in step 5 above is selected from methanol, ethanol, isopropanol, tetrahydrofuran, dioxane, DMF, DMSO, toluene, ethylbenzene, ethylene glycol dimethyl ether, acetonitrile and water.
- One or two or more mixed solvents preferably dioxane and toluene; more preferably dioxane.
- the reaction temperature in step 5 above is 80-120°C; preferably 85-105°C; more preferably 90-105°C.
- the reaction time in step 5 above is 5-15 hours; preferably 8-12 hours; more preferably 10-12 hours.
- the molar ratio of compound SMA-5 to compound SMA-9 in step 5 is 1:1-2; preferably, 1:1-1.5; more preferably, 1:1-1.2.
- the molar ratio of the compound SMA-5 to the catalyst in step 5 is 1:0.005-0.05; preferably 1:0.01-0.05; more preferably 1:0.01-0.03.
- the molar ratio of compound SMA-5 to base in step 5 is 1:1-3; preferably 1:1-2; more preferably 1:1.5-2.
- the molar volume ratio of the compound SMA-5 to the solvent in step 5 is 1 mmol: 0.1-2 mL; preferably 1 mmol: 0.2-1 mL; more preferably 1 mmol: 0.2-0.5 mL.
- the above step 5 is: compound SMA-5 and compound SMA-9 in the presence of potassium carbonate, water and 1,1'-bisdiphenylphosphine ferrocene palladium dichloride, 90-95
- the compound SMA-6 was obtained by the reaction at a temperature of °C.
- the above step 5 further includes the step of adding a mixed solution of ethanol and water for treatment after the reaction is completed. It further includes the step of adding the separated solid after the treatment to the mixed system of water and dichloromethane for treatment. It further includes the step of separating the organic phase after treatment, and treating the organic phase with anhydrous sodium sulfate and activated carbon.
- the above step 5 further includes the step of purifying compound SMA-6 with ethyl acetate.
- step 6 above is carried out in the presence of a catalyst, a base and a solvent.
- the catalyst in step 6 above is selected from palladium acetate, 1,2-bis(diphenylphosphino)ethane palladium dichloride, 1,3-bis(diphenylphosphino)propane palladium dichloride , 1,4-bis(diphenylphosphino)butane palladium dichloride, bis(triphenylphosphine)palladium dichloride, bis(cyanobenzene)palladium dichloride, 1,1'-bisdiphenyl Phosphine ferrocene palladium dichloride and tris(dibenzylideneacetone) dipalladium; preferably palladium acetate and tris(dibenzylideneacetone) dipalladium; more preferably palladium acetate.
- the catalyst in step 6 above is selected from palladium acetate and tris(dibenzylideneacetone) dipalladium, wherein the catalyst needs to be used in the presence of a ligand, and the ligand is selected from 2-bicyclohexylphosphine -2',4',6'-Triisopropylbiphenyl, 2-Biscyclohexylphosphine-2',6'-Dimethoxybiphenyl, 2-Biscyclohexylphosphine-2',6'-Diiso Propoxy-1,1'-biphenyl, 4,5-bisdiphenylphosphine-9,9-dimethylxanthene, 1,1'-binaphthol and 2,2'-bis- (Diphenylphosphino)-1,1'-binaphthalene; preferably 4,5-bisdiphenylphosphine-9,9-dimethylxanthene and 2-bic
- the above step 6 is performed in the presence of palladium acetate, 2-bicyclohexylphosphine-2',4',6'-triisopropylbiphenyl, a base and a solvent.
- the base in step 6 above is selected from sodium carbonate, potassium carbonate, cesium carbonate, sodium acetate, potassium acetate, sodium ethoxide, sodium tert-butoxide, potassium tert-butoxide, triethylamine, pyridine, piperidine and N-methylpiperidine; preferably sodium carbonate, potassium carbonate and cesium carbonate; more preferably cesium carbonate.
- the solvent in step 6 above is selected from dichloromethane, methanol, ethanol, isopropanol, tetrahydrofuran, dioxane, DMF, DMSO, toluene, ethylbenzene, ethylene glycol dimethyl ether, One or two or more mixed solvents of acetonitrile and water; preferably tetrahydrofuran and dioxane; more preferably dioxane.
- the reaction temperature in step 6 above is 80-150°C; preferably 80-120°C; more preferably 100-120°C. In some specific embodiments, the reaction temperature in step 6 above is about 110°C.
- the reaction time in step 6 above is 3-10 hours; preferably 3-8 hours; more preferably 4-6 hours. In some specific embodiments, the reaction time in step 6 above is about 5 hours.
- the molar ratio of compound SMA-6 to compound SMA-10 in the above step 6 is 1:1-2; preferably, 1:1-1.5; more preferably, 1:1-1.2.
- the molar ratio of compound SMA-6 to catalyst in step 6 is 1:0.01-0.1; preferably 1:0.02-0.06; more preferably 1:0.02-0.04.
- the molar ratio of compound SMA-6 to ligand in step 6 is 1:0.01-0.1; preferably 1:0.02-0.06; more preferably 1:0.04-0.06.
- the molar ratio of compound SMA-6 to base in step 6 is 1:1-3; preferably 1:1.5-3; more preferably 1:1.5-2.
- the molar volume ratio of compound SMA-6 to solvent in step 6 is 1 mmol: 1-8 mL; preferably 1 mmol: 2-6 mL; more preferably 1 mmol: 3-4 mL.
- the above step 6 is: compound SMA-6 and compound SMA-10 in cesium carbonate, 1,4-dioxane, 2-dicyclohexylphosphine-2',4',6'-tri In the presence of isopropyl biphenyl and palladium acetate, the reaction is carried out at a temperature of 110° C. to obtain compound SMA-7.
- the above step 6 further includes the step of adding dichloromethane to the reaction system after the reaction is completed. It further includes the steps of adding sodium sulfate and mercapto silica gel, stirring and filtering.
- the above step 6 further includes the step of pulping compound SMA-7 with ethyl acetate.
- the compound SMA-10 can be prepared by referring to the method disclosed in the specification of WO2018045993.
- the compound SMA-10 can also be purchased commercially.
- step 7 is performed in the presence of acid and solvent.
- the acid in step 7 is selected from hydrogen chloride
- the solvent in step 7 is selected from methanol, ethanol and isopropanol; preferably methanol.
- the acid in step 7 is selected from hydrogen chloride, and the solvent in step 7 is selected from methanol.
- the protective group of compound SMA-7 is removed to obtain the hydrochloride salt of the compound of formula (I); further, the hydrochloride salt of the compound of formula (I) is neutralized and freed with a base to obtain the compound of formula (I).
- the base neutralized with the hydrochloride of the compound of formula (I) is selected from an aqueous sodium hydroxide solution, an aqueous potassium hydroxide solution, an aqueous sodium carbonate solution or an aqueous potassium carbonate solution; preferably an aqueous sodium hydroxide solution.
- the application also provides a preparation method of intermediate SMA-6, which includes:
- Step 1 Compound SMA-1 reacts with compound SMA-8 to obtain compound SMA-2;
- Step 2 Compound SMA-2 reacts with hydrazine hydrate to obtain compound SMA-3;
- Step 3 Compound SMA-3 undergoes methylation reaction to obtain compound SMA-4;
- Step 4 Compound SMA-4 is reacted with pinacol diborate to obtain compound SMA-5;
- Step 5 Compound SMA-5 reacts with compound SMA-9 to obtain compound SMA-6.
- step 1, step 2, step 3, step 4, and step 5 in the preparation method of the intermediate SMA-6 are the same as step 1, step 2 in the preparation method of the compound of formula (I) in this application. , Step 3, Step 4, and Step 5.
- the application also provides the use of the preparation method of the intermediate SMA-6 in the preparation of the compound of formula (I).
- This application also provides a method for preparing the intermediate SMA-3, which includes:
- Step 1 Compound SMA-1 reacts with compound SMA-8 to obtain compound SMA-2;
- Step 2 Compound SMA-2 reacts with hydrazine hydrate to obtain compound SMA-3.
- reaction conditions of step 1 and step 2 in the preparation method of the intermediate SMA-3 are as described in step 1 and step 2 in the preparation method of the compound of formula (I) in this application.
- the application also provides a use of the preparation method of the above-mentioned intermediate SMA-3 in the preparation of the compound of formula (I).
- the application also provides a preparation method of intermediate SMA-4, which includes:
- reaction conditions in the preparation method of the intermediate SMA-4 are as described in step 3 in the preparation method of the compound of formula (I) in this application.
- the preparation method of the intermediate SMA-4 includes: the compound SMA-3 reacts with trimethyloxonium tetrafluoroboric acid to produce the onium salt intermediate compound SMA-3' (the tetrafluoroborate of compound SMA-4 Onium borate), the onium salt intermediate compound SMA-3' is further hydrolyzed to obtain compound SMA-4.
- the formation of the above-mentioned onium salt intermediate compound SMA-3' is carried out in the presence of a solvent.
- the solvent generated from the onium salt intermediate compound SMA-3' is selected from ethyl acetate and acetone; ethyl acetate is preferred.
- reaction temperature for the formation of the onium salt intermediate compound SMA-3' is controlled at 10-30°C; preferably 20-30°C; more preferably 25-30°C.
- reaction time for the formation of the onium salt intermediate compound SMA-3' is 5-12 hours; preferably 8-12 hours; more preferably 8-10 hours.
- the molar ratio of compound SMA-3 to trimethyloxonium tetrafluoroboric acid in the formation of the onium salt intermediate compound SMA-3' is 1:1 to 3; preferably 1:1 to 2; more preferably 1:1 ⁇ 1.2.
- the molar volume ratio of the compound SMA-3 to the solvent in the formation of the onium salt intermediate compound SMA-3' is 1 mmol: 1-5 mL; preferably 1 mmol: 2-4 mL; more preferably 1 mmol: 2-3 mL.
- the above-mentioned onium salt intermediate compound SMA-3' is hydrolyzed in the presence of a base and a solvent.
- the base for hydrolysis of the onium salt intermediate compound SMA-3' is selected from potassium carbonate, sodium carbonate, potassium bicarbonate, sodium bicarbonate, sodium hydroxide and potassium hydroxide; preferably sodium bicarbonate and hydroxide Sodium; more preferably sodium bicarbonate.
- the hydrolyzed base of the onium salt intermediate compound SMA-3' is an aqueous solution.
- the solvent for the hydrolysis of the above-mentioned onium salt intermediate compound SMA-3' is the same as the solvent generated by the above-mentioned onium salt intermediate.
- the solvent for the hydrolysis of the onium salt intermediate compound SMA-3' is selected from dichloromethane and ethyl acetate; dichloromethane is preferred.
- the formation of the above-mentioned onium salt intermediate compound SMA-3' and the solvent required for the hydrolysis are the same or different.
- the molar ratio of the onium salt intermediate compound SMA-3' to the base is 1:1-5; preferably 1:1-3; more preferably 1:2-3.
- reaction time for the hydrolysis of the onium salt intermediate compound SMA-3' is 0.5 to 3 hours; preferably 0.5 to 1 hour.
- the application also provides the use of the preparation method of the above-mentioned intermediate SMA-4 in the preparation of the compound of formula (I).
- the preparation of the compound of formula (I) in the present application may also include the purification of the crude product.
- the compound SMA-1, hydrazine hydrate, pinacol diborate, and compound SMA-9 in this application can all be purchased through commercial channels.
- the metal catalyst used in the preparation process of the compound of formula (I) of the present application has reduced the number of reaction steps and the amount compared with the prior art, which is more economical, and the metal residue in the final product is correspondingly less.
- LDA lithium diisopropylamide
- DMF N,N-dimethylformamide
- DMSO dimethyl sulfoxide
- DBU 1,8-diazabicyclo eleven Carbon-7-ene
- DMAP 4-dimethylaminopyridine
- Pin 2 B 2 refers to pinacol diborate
- Pd(dppf)Cl 2 refers to 1,1'-bisdiphenylphosphinoferrocene Palladium dichloride
- TLC refers to thin layer chromatography analysis
- HPLC high performance liquid chromatography analysis.
- N,O-dimethylhydroxylamine hydrochloride (5.0kg) to a 100L reaction kettle, add dichloromethane (26L) and stir to dissolve, cool to an internal temperature of -5 ⁇ 5°C, and slowly add triethylamine (10.4kg), control the internal temperature below 5°C during the dripping process. After the addition, control the internal temperature below 5°C to add isobutyryl chloride (SMA-11) (5.46kg) dropwise, drop it off, and stir at room temperature to react for 1 hour.
- SMA-12 isobutyryl chloride
- the reaction system was cooled to 20°C, filtered, the filter cake was washed with water 10L ⁇ 2, and the obtained filter cake was dried in a vacuum oven at 60°C for 48 hours to obtain 1.9 kg of the compound of formula (I) with a yield of 83.4% and a purity of 98.9 %.
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Abstract
Description
Claims (11)
- 权利要求1所述式(I)化合物的制备方法,其中,步骤1在溶剂和碱的存在下进行;所述溶剂选自二氯甲烷、四氢呋喃、二氧六环、DMF、DMSO、乙腈、乙醚、异丙醚、甲叔醚、2-甲基四氢呋喃、正己烷和正庚烷中的一种或两种及以上混合溶剂;优选为四氢呋喃、二氧六环和正庚烷中的一种或两种及以上混合溶剂;进一步优选为四氢呋喃;所述碱选自正丁基锂、叔丁基锂、叔丁醇钠、叔丁醇钾、二异丙基氨基锂、六甲基二硅基 胺基锂、二(三甲基硅基)氨基钠、钠氢和氢氧化锂;优选为二异丙基氨基锂、正丁基锂和六甲基二硅基胺基锂;进一步优选为二异丙基氨基锂。
- 权利要求2所述式(I)化合物的制备方法,其中,化合物SMA-1与化合物SMA-8的摩尔比为1:1~2;优选为1:1~1.5;进一步优选为1:1~1.4。
- 权利要求2所述式(I)化合物的制备方法,其中,化合物SMA-1与溶剂的摩尔体积比为1mmol:0.5~1.5mL;优选为1mmol:1~1.5mL;进一步优选为1mmol:1~1.2mL。
- 权利要求1所述式(I)化合物的制备方法,其中,步骤2在溶剂存在下进行;所述溶剂选自乙二醇、N,N-二甲基甲酰胺(DMF)、二甲亚砜(DMSO)、二苯醚、邻二氯苯、环丁砜、三甲苯、二乙二醇二甲醚和N-甲基吡咯烷酮;优选为DMF和乙二醇;进一步优选为乙二醇。
- 权利要求1所述式(I)化合物的制备方法,其中,步骤3在甲基化试剂和溶剂的存在下进行;所述甲基化试剂选自碘甲烷、硫酸二甲酯、碳酸二甲酯、对甲苯磺酸甲酯、三氟甲磺酸甲酯、四甲基氟化铵、磷酸三甲酯、三甲基氧鎓四氟硼酸和1-甲基-3-对甲苯基三氮;优选为碘甲烷和三甲基氧鎓四氟硼酸;进一步优选为三甲基氧鎓四氟硼酸;所述溶剂选自乙酸乙酯、二氯甲烷和丙酮中的一种或两种及以上混合溶剂;优选为乙酸乙酯和二氯甲烷中的一种或两种及以上混合溶剂。
- 权利要求1所述式(I)化合物的制备方法,其中,步骤4在催化剂、碱和溶剂的存在下进行;所述催化剂选自醋酸钯、1,2-双(二苯膦基)乙烷二氯化钯、1,3-双(二苯膦基)丙烷二氯化钯、1,4-双(二苯膦基)丁烷二氯化钯、二(三苯基膦)二氯化钯、二(氰基苯)二氯化钯、1,1'-双二苯基膦二茂铁二氯化钯或三(二亚苄基丙酮)二钯;优选为二(三苯基膦)二氯化钯或1,1'-双二苯基膦二茂铁二氯化钯;进一步优选为1,1'-双二苯基膦二茂铁二氯化钯;所述碱选自碳酸钠、碳酸钾、碳酸铯、醋酸钠、醋酸钾、乙醇钠、叔丁醇钠、叔丁醇钾、三乙胺、吡啶、哌啶或N-甲基哌啶;优选为醋酸钾或碳酸铯;进一步优选为醋酸钾;所述溶剂选自甲醇、乙醇、异丙醇、四氢呋喃、二氧六环、DMF、DMSO、甲苯、乙基苯、乙二醇二甲醚、乙腈和水中的一种或两种及以上混合溶剂;优选为四氢呋喃和二氧六环;进一步优选为二氧六环。
- 权利要求1所述式(I)化合物的制备方法,其中,步骤5在催化剂、碱和溶剂的存在下进行;所述催化剂选自醋酸钯、1,2-双(二苯膦基)乙烷二氯化钯、1,3-双(二苯膦基)丙烷二氯化钯、1,4-双(二苯膦基)丁烷二氯化钯、二(三苯基膦)二氯化钯、二(氰基苯)二氯 化钯、1,1'-双二苯基膦二茂铁二氯化钯或三(二亚苄基丙酮)二钯;优选为二(三苯基膦)二氯化钯或1,1'-双二苯基膦二茂铁二氯化钯;进一步优选为1,1'-双二苯基膦二茂铁二氯化钯;所述碱选自碳酸钠、碳酸钾、碳酸铯、醋酸钠、醋酸钾、乙醇钠、叔丁醇钠、叔丁醇钾、三乙胺、吡啶、哌啶或N-甲基哌啶;优选为碳酸铯或碳酸钾;进一步优选为碳酸钾;所述溶剂选自甲醇、乙醇、异丙醇、四氢呋喃、二氧六环、DMF、DMSO、甲苯、乙基苯、乙二醇二甲醚、乙腈和水中的一种或两种及以上混合溶剂;优选为二氧六环和甲苯;进一步优选为二氧六环。
- 权利要求1所述式(I)化合物的制备方法,其中,步骤6在催化剂、碱和溶剂的存在下进行;所述催化剂选自醋酸钯、1,2-双(二苯膦基)乙烷二氯化钯、1,3-双(二苯膦基)丙烷二氯化钯、1,4-双(二苯膦基)丁烷二氯化钯、二(三苯基膦)二氯化钯、二(氰基苯)二氯化钯、1,1'-双二苯基膦二茂铁二氯化钯和三(二亚苄基丙酮)二钯;优选为醋酸钯和三(二亚苄基丙酮)二钯;进一步优选为醋酸钯;所述碱选自碳酸钠、碳酸钾、碳酸铯、醋酸钠、醋酸钾、乙醇钠、叔丁醇钠、叔丁醇钾、三乙胺、吡啶、哌啶和N-甲基哌啶;优选为碳酸钠、碳酸钾和碳酸铯;进一步优选为碳酸铯;所述溶剂选自二氯甲烷、甲醇、乙醇、异丙醇、四氢呋喃、二氧六环、DMF、DMSO、、甲苯、乙基苯、乙二醇二甲醚、乙腈和水中的一种或两种及以上混合溶剂;优选为四氢呋喃和二氧六环;进一步优选为二氧六环。
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| CN202511252358.8A CN121270518A (zh) | 2020-06-22 | 2021-06-21 | 一种cdk4/6抑制剂的制备方法 |
| EP21828656.5A EP4159728A4 (en) | 2020-06-22 | 2021-06-21 | MANUFACTURING PROCESS FOR CDK4/6 INHIBITOR |
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| CN115636826A (zh) * | 2022-10-31 | 2023-01-24 | 常州英诺升康生物医药科技有限公司 | 一种cdk抑制剂的制备方法 |
| WO2023237055A1 (zh) * | 2022-06-09 | 2023-12-14 | 正大天晴药业集团股份有限公司 | 一种cdk4/6抑制剂治疗去分化脂肪肉瘤的用途 |
| WO2024032751A1 (zh) * | 2022-08-12 | 2024-02-15 | 正大天晴药业集团股份有限公司 | 一种取代的2-氢-吡唑衍生物的晶型及其制备方法 |
| WO2025162173A1 (zh) * | 2024-02-04 | 2025-08-07 | 正大天晴药业集团股份有限公司 | 治疗经cdk4/6抑制剂治疗后的乳腺癌用途 |
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- 2021-06-21 EP EP21828656.5A patent/EP4159728A4/en active Pending
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Cited By (8)
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| WO2023237055A1 (zh) * | 2022-06-09 | 2023-12-14 | 正大天晴药业集团股份有限公司 | 一种cdk4/6抑制剂治疗去分化脂肪肉瘤的用途 |
| CN115057845A (zh) * | 2022-06-14 | 2022-09-16 | 山东罗欣药业集团恒欣药业有限公司 | 一种阿贝西利的制备方法 |
| CN115057845B (zh) * | 2022-06-14 | 2024-05-03 | 山东罗欣药业集团恒欣药业有限公司 | 一种阿贝西利的制备方法 |
| WO2024032751A1 (zh) * | 2022-08-12 | 2024-02-15 | 正大天晴药业集团股份有限公司 | 一种取代的2-氢-吡唑衍生物的晶型及其制备方法 |
| CN119731164A (zh) * | 2022-08-12 | 2025-03-28 | 正大天晴药业集团股份有限公司 | 一种取代的2-氢-吡唑衍生物的晶型及其制备方法 |
| CN119731164B (zh) * | 2022-08-12 | 2026-04-17 | 正大天晴药业集团股份有限公司 | 一种取代的2-氢-吡唑衍生物的晶型及其制备方法 |
| CN115636826A (zh) * | 2022-10-31 | 2023-01-24 | 常州英诺升康生物医药科技有限公司 | 一种cdk抑制剂的制备方法 |
| WO2025162173A1 (zh) * | 2024-02-04 | 2025-08-07 | 正大天晴药业集团股份有限公司 | 治疗经cdk4/6抑制剂治疗后的乳腺癌用途 |
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| US12570633B2 (en) | 2026-03-10 |
| CN115768763A (zh) | 2023-03-07 |
| CN121270518A (zh) | 2026-01-06 |
| EP4159728A4 (en) | 2024-06-26 |
| CN115768763B (zh) | 2025-09-09 |
| EP4159728A1 (en) | 2023-04-05 |
| US20230331699A1 (en) | 2023-10-19 |
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