CN115636774B - Synthesis method of belisi - Google Patents

Synthesis method of belisi Download PDF

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CN115636774B
CN115636774B CN202211525942.2A CN202211525942A CN115636774B CN 115636774 B CN115636774 B CN 115636774B CN 202211525942 A CN202211525942 A CN 202211525942A CN 115636774 B CN115636774 B CN 115636774B
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CN115636774A (en
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�金钟
张鹏飞
姜志伟
马庆雪
黄�俊
唐菁鸿
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Nankai University
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Abstract

The present invention relates to a chemical synthesis method of Bei Lisi. The preparation method comprises the steps of sequentially synthesizing intermediates I, II, III and IV by taking 2, 5-dimethylindole as a starting material, hydrolyzing in sodium hydroxide methanol solution, chloridizing by thionyl chloride to obtain sulfonyl chloride, and reacting with hydroxylamine hydrochloride to obtain the final product belinostat. The invention uses the method of C-H functionalization (C-H functionalization), improves the atom economy, has short overall reaction route and short time consumption, improves the reaction efficiency, enhances the production safety, reduces the environmental pollution and is suitable for industrial production.

Description

Synthesis method of belisi
Technical Field
The invention relates to the field of pharmaceutical chemistry, in particular to a method for industrially synthesizing a drug Bei Lisi for treating recurrent refractory peripheral T cell lymphoma.
Background
Belinostat (belinostat) is a histone deacetylase inhibitor (histone deacetylase inhibitors, HDACI). Overexpression or deregulation of Histone Deacetylase (HDAC) causes excessive deacetylation of histone, remodelling of chromatin into a configuration inhibiting transcription, causing a decrease in expression of the corresponding gene, resulting in generation of canceration, and thus inhibition of HDAC is considered as an anticancer drug target with development prospect. Belinostat is a small molecule hydroxamate type HDACI, originally developed by topotargete Inc., chemical name:Nhydroxy-3- (3-phenylaminosulfonylphenyl) acrylamide, which was approved by the FDA for marketing in 7 of 2014, is currently recognized as an important drug for the treatment of T-cell lymphoma in the International market, and is also known for mesothelioma, B-cell lymphoma,Soft tissue sarcoma, colorectal cancer, liver cancer and the like also have single or combined treatment effects and have huge market potential, so that the development of a new technology of belisi has important significance.
The compound is disclosed in International patent WO0230879 for the first time, wherein the synthetic route of the compound is as follows:
in the first step of sulfonation reaction of the reaction route, fuming sulfuric acid is used, and is easy to cause explosion when meeting water, organic matters and oxidizing agents, has strong corrosiveness, has great danger and serious potential safety hazard in storage, transportation and use, and can also pollute the environment; the method has long route and multiple steps, and the total yield is only 1.3%, so that the industrialized production is difficult to realize.
The synthesis route II is as follows: the content of documents Synthetic Communication, 2009,40(17) 2520-2524 reports a synthetic route, which uses m-nitrobenzaldehyde as starting material, firstly makes olefination reaction, then reduces nitro group to amino group under the action of stannous chloride, then makes diazotization, sulfonation, amidation and hydroxylation successively so as to obtain belinostat.
In comparison to the first synthetic route, this route does not use highly corrosive raw materials such as fuming sulfuric acid and thionyl chloride. However, this route uses diazotisation reactions with a great risk of explosion, uses SO with a great environmental pollution 2 The gas, therefore, has great production safety hidden trouble and pollution source, and is difficult to realize large-scale industrialized production.
In summary, it is currently difficult to realize large-scale industrial production on the synthesis route of belinostat, either because of the use of highly polluting and corrosive reagents, or because of the dangerous diazotization reaction in the process route, or because of the long route and low yield. Therefore, the development of a green, environment-friendly, highly operable and safe belinostat synthesis method has important significance.
Disclosure of Invention
The invention provides a green synthesis method of belinostat, which adopts a method of C-H functionalization (C-H functionalization) in the first step of the route, improves the atom economy, has short integral reaction route and short time consumption, improves the reaction efficiency, enhances the production safety, reduces the environmental pollution and is suitable for industrial production.
The synthesis method of belinostat provided by the invention is characterized by comprising the following synthesis routes:
the method specifically comprises the following steps:
1) Dissolving intermediate I in proper amount of solvent, sequentially adding metal palladium catalyst, oxidant, amino acid derivative ligand and acrylic ester, heating to 80 o C, reacting 24 and h to obtain an intermediate II;
2) Dissolving the intermediate II in a polar solvent, adding a proper amount of alkaline reagent, and heating to reflux reaction. After the reaction, the solvent was dried by spinning, the mixture was separated with ethyl acetate and water, the aqueous phase was adjusted to pH 2-3 with acid, and then concentrated to dryness.
3) Dissolving the product of the last step in a polar solvent, adding a proper amount of alkaline reagent and methyl iodide, reacting at room temperature until the reaction is completed, and spin-drying the solvent to obtain an intermediate III;
4) And (3) dissolving the intermediate III in toluene, adding excessive thionyl chloride and a catalytic amount of DMF, heating to complete the reaction, and removing the solvent to obtain a product. Then dissolving in dichloromethane, adding aniline and pyridine, and reacting at room temperature to obtain an intermediate IV completely;
5) Intermediate IV is hydrolyzed in aqueous sodium hydroxide solution and then chlorinated by thionyl chloride to give sulfonyl chloride, and hydroxylamine hydrochloride is added to the mixture to give the final product Bei Lisi he.
Wherein the indole ring portion of template T is divided by m R 2 Substituted, the benzene ring being substituted by n R 3 Substitution;
R 1 、R 2 、R 3 specific ranges for substituents, m and n, are as follows:
R 1 =hydrogen, C 1 -C 4 Alkyl or halogen;
R 2 =hydrogen, C 1 -C 4 Alkyl, C 1 -C 4 Alkoxy or halogen;
R 3 =hydrogen, C 1 -C 4 Alkyl, C 1 -C 4 Alkoxy or halogen;
m is selected from integers from 0 to 4, when m is 0, the ring is unsubstituted; when m is greater than 1, R 2 May be the same or different;
n is an integer from 0 to 4, when n is 0, the ring is unsubstituted; when n is greater than 1, R 3 May be the same or different.
The solvent in the step 1) comprises p-xylene, mesitylene, 1, 2-dichloroethane, chloroform, isopropanol, tertiary butanol, hexafluoroisopropanol, tetrahydrofuran or 1, 4-dioxane; the palladium catalyst comprises Pd (OPiv) 2 、Pd 2 (dba) 3 、Pd(OAc) 2 、PdCl 2 (PPh 3 ) 2 Or Pd (dppf) Cl 2 The method comprises the steps of carrying out a first treatment on the surface of the The oxidant comprises Ag 2 CO 3 、AgOAc、PhCO 2 Ag、AgNO 3 、AgTFA、Ag 2 O、AgSbF 6 、Ag 2 SO 4 、CuCl 2 、CuO、CuF 2 、Cu(OTf) 2 、Cu(OAc) 2 Or Cu (OAc) 2 (0.5 equiv)+O 2 The method comprises the steps of carrying out a first treatment on the surface of the Amino acid derivative ligands include valine derivatives, leucine derivatives, isoleucine derivatives, phenylalanine derivatives or glycine derivatives; the acrylic acid ester comprises methyl acrylate,Ethyl acrylate, propyl acrylate or butyl acrylate;
step 2) the polar solvent comprises methanol, ethanol, isopropanol, tertiary butanol or tetrahydrofuran; the alkaline reagent comprises potassium carbonate, cesium carbonate, sodium hydroxide, potassium hydroxide or sodium hydride;
step 3) the polar solvent comprises acetonitrile, tetrahydrofuran, acetone or DMF; the alkaline reagent comprises sodium carbonate, potassium carbonate and cesium carbonate;
preferably, R 1 、R 2 、R 3 Specific ranges for substituents, m and n, are as follows:
R 1 =hydrogen, methyl, ethyl, fluoro, chloro, bromo or iodo;
R 2 =hydrogen, methyl, ethyl, methoxy, ethoxy, fluoro, chloro, bromo or iodo;
R 3 =hydrogen, methyl, ethyl, methoxy, ethoxy, fluoro, chloro, bromo or iodo;
m is selected from integers from 0 to 2, when m is 0, the ring is unsubstituted; when m is greater than 1, R 2 May be the same or different;
n is an integer from 0 to 2, and when n is 0, the ring is unsubstituted; when n is greater than 1, R 3 May be the same or different;
preferably, the solvent of step 1) comprises isopropanol, hexafluoroisopropanol or tetrahydrofuran; the palladium catalyst comprises Pd (OAc) 2 Or PdCl 2 (PPh 3 ) 2 The method comprises the steps of carrying out a first treatment on the surface of the The oxidant comprises AgOAc and AgNO 3 、Cu(OAc) 2 Or Cu (OAc) 2 (0.5 equiv)+O 2 The method comprises the steps of carrying out a first treatment on the surface of the Amino acid derivative ligands include valine derivatives or glycine derivatives; the acrylic ester comprises methyl acrylate and ethyl acrylate;
step 2) the polar solvent comprises methanol or tetrahydrofuran; alkaline agents include potassium carbonate or sodium hydride;
step 3) the polar solvent comprises acetonitrile or DMF; the alkaline reagent comprises sodium carbonate or potassium carbonate;
R 1 、R 2 、R 3 specific ranges for substituents, m and n, are as follows:
R 1 =hydrogen, methyl, or fluoro; r is R 2 =hydrogen, methyl, methoxy or fluoro; r is R 3 =hydrogen, methyl, methoxy or fluoro;
m is selected from integers from 0 to 2, when m is 0, the ring is unsubstituted; when m is greater than 1, R 2 May be the same or different;
n is an integer from 0 to 2, and when n is 0, the ring is unsubstituted; when n is greater than 1, R 3 May be the same or different;
preferably, the solvent of step 1) is hexafluoroisopropanol and the palladium catalyst is Pd (OAc) 2 The oxidant is AgOAc or Cu (OAc) 2 (0.5 equiv)+O 2 The ligand of the amino acid derivative is Ac-Gly-OH, and the acrylic ester is ethyl acrylate; step 2) the polar solvent is methanol, and the alkaline reagent is potassium carbonate; step 3) the polar solvent is DMF, and the alkaline reagent is potassium carbonate;
R 1 、R 2 、R 3 specific ranges for substituents, m and n, are as follows:
R 1 =hydrogen or methyl; r is R 2 =hydrogen or methyl; r is R 3 =hydrogen or methoxy;
m is selected from 0 or 1, and when m is 0, the ring is unsubstituted;
n is an integer from 0 to 2, and when n is 0, the ring is unsubstituted; when n is greater than 1, R 3 May be the same or different.
The invention provides a green synthesis method of belinostat (belinostat), overcomes the defects of the prior art, and particularly develops a green, environment-friendly, high-operability and safe belinostat synthesis method. The method for functionalizing the C-H is used for the first step of the route, so that the atom economy is improved, the overall reaction route is short, the time consumption is short, the reaction efficiency is improved, the production safety is enhanced, the environmental pollution is reduced, and the method is suitable for large-scale industrial production.
Detailed Description
The present invention will be described in detail with reference to examples, but these examples are not intended to limit the present invention. The experimental methods for which specific conditions are not specified in the examples are generally as described in conventional conditions and handbooks, or as suggested by the manufacturer; the equipment, materials, reagents and the like used, unless otherwise indicated, are all commercially available.
Example 1 preparation of template T
2, 5-dimethylindole (5.0 g, 34.4 mmol) was dissolved in DMF (30 mL) at room temperature, then KOH (4.8 g, 86.1 mmol) was added thereto. After 15 minutes at room temperature, I is dissolved 2 (8.7. 8.7 g, 34.4 mmol) of DMF was added dropwise to the mixed reaction solution and the reaction was continued at 4.4 h. After the reaction was completed, the mixture was poured into Na 2 SO 3 (500. 500 mL, 0.1%) in ice water, a light orange precipitate formed. The mixture was filtered and the precipitate was dried in air to give a pale orange solid (8.8. 8.8 g) in 94.3% yield, melting point 134-135 o C。
2-Benzonitrile boronic acid pinacol ester (3.8 g, 16.6 mmol) was dissolved in 1, 4-dioxane (40 mL), followed by sequential addition of the intermediate 3-iodo-2, 5-dimethyl-1 obtained in the previous stepHIndole (2.5 g, 9.2 mmol), pd (dppf) Cl 2 (0.67 g, 0.9 mmol) cesium carbonate (7.5 g, 23.1 mmol) in water (4 mL) and the reaction was warmed to 80 o C, reacting 16 h under the protection of argon. After the reaction, the reaction mixture was quenched with aqueous ammonium chloride (80, mL), extracted with ethyl acetate (2X 60 mL), and the separated oil phase was driedNa 2 SO 4 Drying, filtering, concentrating, and column chromatography to obtain template T 1 (1.6 g, 70.5%) of a white solid, melting point 158-159 o C. Template T 2 、T 3 And T 4 All were prepared in the same manner and gave good yields.
1 H NMR (400 MHz, Chloroform-d) δ 7.95 (s, 1H), 7.13 (s, 1H), 7.08 (d, J = 8.2 Hz, 1H), 6.97 (d, J = 8.3 Hz, 1H), 2.45 (s, 3H), 2.39 (s, 3H).
13 C NMR (100 MHz, Chloroform-d) δ 136.32, 134.11, 130.93, 129.90, 123.81, 119.92, 110.29, 58.47, 21.38, 14.36.
HR-MS (ESI) m/z calcd for C 10 H 10 INNa + [M+Na + ] 293.9750, found 293.9753.
1 H NMR (400 MHz, Chloroform-d) δ 8.14 (s, 1H), 7.76 (d, J = 7.8 Hz, 1H), 7.66 – 7.56 (m, 2H), 7.38 (td, J = 7.5, 1.4 Hz, 1H), 7.21 (s, 1H), 7.16 (d, J = 8.2 Hz, 1H), 6.97 (d, J = 8.2 Hz, 1H), 2.40 (s, 3H), 2.35 (s, 3H).
13 C NMR (100 MHz, Chloroform-d) δ 139.78, 133.69, 133.52, 133.32, 132.49, 131.77, 129.41, 127.96, 126.56, 123.34, 119.24, 117.89, 113.13, 110.84, 110.29, 21.51, 12.88.
HR-MS (ESI) m/z calcd for C 17 H 14 N 2 Na + [M+Na + ] 269.1049, found 269.1046.
White solid, melting point 105-106 o C。
1 H NMR (400 MHz, CDCl 3 ) δ 8.52 (s, 1H), 7.83 – 7.75 (m, 3H), 7.69 (d, J = 2.7 Hz, 1H), 7.66 (td, J = 7.7, 1.5 Hz, 1H), 7.47 (d, J = 8.0 Hz, 1H), 7.37 (td, J = 7.6, 1.3 Hz, 1H), 7.31 – 7.25 (m, 1H), 7.22 (td, J = 7.5, 7.0, 1.1 Hz, 1H).
13 C NMR (100 MHz, CDCl 3 ) δ 138.98, 136.25, 134.00, 132.74, 129.96, 126.22, 125.83, 124.43, 122.90, 120.81, 119.59, 119.25, 113.92, 111.68, 110.90.
HR-MS (ESI) m/z calcd for C 15 H 10 N 2 Na + [M+Na + ] 241.0736, found 241.0732.
Gray solids, melting points 112-113 o C。
1 H NMR (400 MHz, CDCl 3 ) δ 8.44 (s, 1H), 7.81 – 7.74 (m, 2H), 7.68 – 7.61 (m, 2H), 7.54 (s, 1H), 7.35 (t, J = 7.8 Hz, 2H), 7.09 (d, J = 8.4 Hz, 1H), 2.46 (s, 3H).
13 C NMR (100 MHz, CDCl 3 ) δ 139.22, 134.60, 133.99, 132.73, 130.18, 129.97, 126.09, 126.07, 124.61, 124.49, 119.67, 118.81, 113.37, 111.37, 110.82, 21.65.
HR-MS (ESI) m/z calcd for C 16 H 12 N 2 Na + [M+Na + ] 255.0893, found 255.0898.
White solid, melting point 135-136 o C。
1 H NMR (400 MHz, CDCl 3 ) δ 8.23 (s, 1H), 7.78 (d, J = 7.8 Hz, 1H), 7.67 – 7.57 (m, 2H), 7.46 – 7.38 (m, 2H), 7.30 (d, J = 7.9 Hz, 1H), 7.18 – 7.09 (m, 2H), 2.39 (s, 3H).
13 C NMR (100 MHz, CDCl 3 ) δ 139.62, 135.27, 133.62, 133.43, 132.58, 131.81, 127.80, 126.74, 121.95, 120.25, 119.26, 118.31, 113.25, 111.38, 110.66, 12.96.
HR-MS (ESI) m/z calcd for C 16 H 12 N 2 Na + [M+Na + ] 255.0893, found 255.0895.
Example 2 preparation of intermediate I
Template T 1 (200.00 mg, 0.81 mmol) was dissolved in THF (15 mL) and then sodium hydride (60% wt, 97.6 mg, 2.44 mmol) was added to the solution under ice-bath conditions. After the reaction solution was stirred for 15 minutes, benzenesulfonyl chloride (286.81 mg, 1.62 mmol) was added, followed by overnight reaction at room temperature. After the reaction was completed, it was quenched with water (40 mL), then extracted with ethyl acetate (2×30 mL), and the separated oil phase was extracted with anhydrous Na 2 SO 4 Drying, filtering, concentrating, and column chromatography to give intermediate I (258 mg, 82.2%) as a white solid with melting point 116-117 o C。
1 H NMR (400 MHz, Chloroform-d) δ 8.07 (d, J = 8.5 Hz, 1H), 7.83 – 7.77 (m, 3H), 7.69 (t, J = 7.7, 1H), 7.55 – 7.47 (m, 3H), 7.43 (t, J = 7.7 Hz, 2H), 7.12 (d, J = 7.7 Hz, 1H), 6.96 (s, 1H), 2.57 (s, 3H), 2.35 (s, 3H).
13 C NMR (100 MHz, Chloroform-d) δ 138.72, 137.12, 135.46, 134.43, 133.73, 133.65, 133.33, 132.70, 131.58, 129.64, 129.36, 128.17, 126.40, 126.11, 119.48, 118.67, 117.94, 114.42, 114.19, 21.25, 14.26.
HR-MS (ESI) m/z calcd for C 23 H 18 N 2 NaO 2 S + [M+Na + ] 409.0981, found 409.0978.
Example 3 preparation of intermediate II Process one
Intermediate I (3.0 g, 7.8 mmol) was dissolved in HFIP (40 mL) and added to a 100 mL flask to which Pd (OAc) was added in sequence 2 (174.3 mg, 0.78 mmol), agOAc (3.9 g, 23.3 mmol), ac-Gly-OH (181.8 mg, 1.55 mmol), ethyl acrylate (1.69 mL, 15.5 mmol) was added after stirring at room temperature for 15 min, and the temperature was raised to 80 o C reaction 24 h. After the reaction was completed, it was cooled to room temperature, filtered through celite, and the filtrate was concentrated under reduced pressure to give yellow oil II (1.7 g, 45%) by column chromatography.
Example 4 preparation of intermediate II Process II
Intermediate I (3.0 g, 7.8 mmol) was dissolved in HFIP (40 mL) and added to a 100 mL flask to which Pd (OAc) was added in sequence 2 (174.3 mg, 0.78 mmol),Cu(OAc) 2 (708.4 mg, 3.9 mmol), ac-Gly-OH (181.8 mg, 1.55 mmol), stirring at room temperature for 15 minutes, adding ethyl acrylate (1.69 mL, 15.5 mmol), then briefly evacuating the flask and introducing O 2 Repeating for three times, and heating to 80 o C reaction 24 h. After the reaction was completed, it was cooled to room temperature, filtered through celite, and the filtrate was concentrated under reduced pressure to give yellow oil II (1.6 g, 43%) by column chromatography.
1 H NMR (400 MHz, Chloroform-d) δ 8.04 (d, J = 8.5 Hz, 1H), 7.95 (s, 1H), 7.80 (dd, J = 8.1, 1.4 Hz, 1H), 7.75 (dt, J = 8.1, 1.3 Hz, 1H), 7.70 (td, J = 7.7, 1.4 Hz, 1H), 7.66 (d, J = 7.6 Hz, 1H), 7.63 (d, J = 16.0 Hz, 1H), 7.51 (ddd, J = 8.1, 6.2, 1.4 Hz, 2H), 7.45 (t, J = 7.9 Hz, 1H), 7.14 (dd, J = 8.6, 1.8 Hz, 1H), 6.97 (s, 1H), 6.43 (d, J = 16.1 Hz, 1H), 4.27 (q, J = 7.1 Hz, 2H), 2.59 (s, 3H), 2.35 (s, 3H), 1.34 (t, J = 7.1 Hz, 3H).
13 C NMR (100 MHz, CDCl 3 ) δ 166.25, 142.11, 139.60, 137.00, 135.91, 135.44, 134.35, 133.92, 133.30, 132.72, 132.47, 131.52, 130.13, 129.74, 128.25, 127.49, 126.31, 125.77, 121.05, 119.88, 118.81, 117.91, 114.38, 114.26, 60.82, 21.25, 14.40, 14.28.
HR-MS (ESI) m/z calcd for C 28 H 24 N 2 NaO 4 S + [M+Na + ] 507.1349, found 507.1346.
EXAMPLE 5 preparation of intermediate III
Intermediate II (1.7 g, 3.5 mmol) was dissolved in methanol (50 mL) and anhydrous potassium carbonate (0.97 g, 7.0 mmol) was added thereto, and the mixture was stirred at 70 o Stirring overnight at C. After the reaction was completed, the solvent was removed by concentration under reduced pressure, and the mixture was separated by water (50 mL) and ethyl acetate (50 mL). Wherein the aqueous phase is adjusted to pH 2-3 with 1 mol/L aqueous hydrochloric acid solution, and the water is then dried by spinning. The mixture was then dissolved in DMF (20 mL), potassium carbonate (1.45 g, 10.5 mmol) was added thereto, methyl iodide (0.44 mL, 7 mmol, 2.0 equiv) and stirred overnight at room temperature. After the reaction is completed, the solvent is removed under vacuum to obtain a crude intermediate III, which is directly put into the next reaction without further purificationTemplate T to be removed simultaneously 1 (0.76 g, 88%) was recovered.
EXAMPLE 6 preparation of intermediate IV
Dissolving intermediate III in toluene, adding excessive thionyl chloride, and dripping a few drops of DMF as catalyst, heating the mixed solution to 70 o C overnight reaction. After completion of the reaction, the excess reagent was distilled off, and then the residue was dissolved in methylene chloride (25. 25 mL), and an excess of pyridine and aniline were added to the mixture to react at room temperature 4.4 h. After the reaction, the excess dichloromethane was distilled off, and then extracted with ethyl acetate (2X 30 mL), and the separated oil phase was subjected to anhydrous Na 2 SO 4 Drying, filtration, concentration and column chromatography give intermediate IV (780 mg, 2.45 mmol) as a yellow solid with melting point 144-145 o C, the overall yield from II-IV was 70%.
1 H NMR (400 MHz, Chloroform-d) δ 7.92 (s, 1H), 7.77 (d, J = 8.0 Hz, 1H), 7.66 – 7.58 (m, 2H), 7.45 (t, J = 7.8 Hz, 1H), 7.31 (s, 1H), 7.23 (d, J= 7.2 Hz, 2H), 7.11 (d, J = 8.6 Hz, 3H), 6.42 (d, J = 16.0 Hz, 1H), 3.81 (s, 3H).
13 C NMR (100 MHz, Chloroform-d) δ 166.89, 142.62, 139.98, 136.16, 135.51, 132.24, 129.70, 129.45, 128.40, 126.35, 125.80, 121.99, 120.28, 52.01.
HR-MS (ESI) m/z calcd for C 16 H 15 NNaO 4 S + [M+Na + ] 340.0614 found 340.0617.
EXAMPLE 7 preparation of belinostat
IV (500 mg, 1.6 mmol) is dissolved in 1 mol/L NaOH in methanol and heated to 40-50 oC The reaction was continued at this temperature for 2 hours, and after completion of the hydrolysis reaction, TLC was monitored, the reaction was stopped, and the pH was adjusted to 2.2 with 1 mol/L aqueous hydrochloric acid, whereby precipitate was formed. Cooling the system to 20-30 deg.f oC Then filtering, washing the filter residue with water for several times, and transferring into an oven for drying to finally obtain the crude intermediate acid 0.45-g.
Catalytic amounts of DBU (3.7 mg, 0.024 mmol) were dissolved in isopropyl acetate (4 mL), followed by the addition of the last step of intermediate acid (0.45 g, 1.5 mmol) and thionyl chloride (0.13 mL, 1.8 mmol/L), at 20-30 oC Stirring was carried out overnight. After no reaction starting material remained as monitored by TLC, the reaction was stopped.
Into a 25 mL round bottom flask was added water (5 mL), THF (4 mL), and hydroxylamine hydrochloride (2.1 g, 30.8 mmol) and the temperature was reduced to 0-10 oC Stirring is started, the acyl chloride reaction liquid is slowly added dropwise while stirring, then the temperature is raised to room temperature, and the reaction is continued until the completion. After stopping the reaction, the system is layered, the water phase is removed, the oil phase is decompressed and distilled to remove most of the solvent, isopropyl acetate (3 mL) is added into the water phase, the system is precipitated, heptane (5 mL) is added into the water phase, the water phase is kept stand for a period of time, the water phase is filtered, and the filter residue is washed by the heptane for a plurality of times, and is dried in an oven to obtain a crude product. The crude product was then taken up in a mixed solvent (EtOH: H 2 O=1:1) to give the final product belinostat (0.33 g, 1.0 mmol), light orange solid, melting point 172-173 o The total yield from IV-belinostat was 65%.
1 H NMR (400 MHz, DMSO-d 6 ) δ 10.75−10.42 (m, 2H), 9.15 (s, 1H), 7.92 (s, 1H), 7.78 (d, J = 7.8 Hz, 1H), 7.71 (d, J = 7.8 Hz, 1H), 7.56 (d, J = 7.8 Hz, 1H),7.47 (d, J = 15.8 Hz, 1H), 7.24 (m, 2H), 7.10−7.01 (m, 3H), 6.51 (d, J = 15.8 Hz, 1H).
HR-MS (ESI) m/z calcd for C 15 H 14 N 2 NaO 4 S + [M+Na + ] 341.0566 found 341.0569。

Claims (4)

1. The synthesis method of belinostat is characterized by comprising the following synthesis routes:
the method specifically comprises the following steps:
1) Dissolving the intermediate I in a proper amount of solvent, sequentially adding a metal palladium catalyst, an oxidant, an amino acid derivative ligand and acrylic ester, and heating to 80 ℃ for reaction for 24 hours to obtain an intermediate II;
2) Dissolving the intermediate II in a polar solvent, adding a proper amount of alkaline reagent, and heating to reflux reaction; after the reaction, spin-drying the solvent, separating the mixture by ethyl acetate and water, adjusting the pH of the water phase to 2-3 by acid, and concentrating and spin-drying;
3) Dissolving the product of the last step in a polar solvent, adding a proper amount of alkaline reagent and methyl iodide, reacting at room temperature until the reaction is completed, and spin-drying the solvent to obtain an intermediate III;
4) Dissolving the intermediate III in toluene, adding excessive thionyl chloride and a catalytic amount of DMF, heating to react completely, and removing the solvent to obtain a product; then dissolving in dichloromethane, adding aniline and pyridine, and reacting at room temperature to obtain an intermediate IV completely;
5) Hydrolyzing the intermediate IV in a sodium hydroxide methanol solution, then chloridizing by using thionyl chloride and obtaining sulfonyl chloride in the presence of a catalytic amount of DBU, and adding hydroxylamine hydrochloride into the mixture to obtain a final product Bei Lisi;
the solvent in the step 1) is hexafluoroisopropanol, and the metal palladium catalyst is Pd (OAc) 2 The oxidant is AgOAc or 0.5equiv Cu (OAc) 2 And O 2 The amino acid derivative ligand is Ac-Gly-OH, and the acrylic ester is ethyl acrylate;
wherein the indole ring portion of template T is divided by m R 2 Substituted, the benzene ring being substituted by n R 3 Substitution;
R 1 、R 2 、R 3 specific ranges for substituents, m and n, are as follows:
R 1 =hydrogen, C 1 -C 4 Alkyl or halogen;
R 2 =hydrogen, C 1 -C 4 Alkyl, C 1 -C 4 Alkoxy or halogen;
R 3 =hydrogen, C 1 -C 4 Alkyl, C 1 -C 4 Alkoxy or halogen;
m is selected from integers from 0 to 4, when m is 0, the ring is unsubstituted; when m is greater than 1, R 2 May be the same or different;
n is an integer from 0 to 4, when n is 0, the ring is unsubstituted; when n is greater than 1, R 3 May be the same or different.
2. The synthesis method of belinostat according to claim 1, wherein:
step 2) the polar solvent is methanol, ethanol, isopropanol, tertiary butanol or tetrahydrofuran; the alkaline reagent is potassium carbonate, cesium carbonate, sodium hydroxide, potassium hydroxide or sodium hydride;
step 3) the polar solvent is acetonitrile, tetrahydrofuran, acetone or DMF; the alkaline reagent is sodium carbonate, potassium carbonate and cesium carbonate; r is R 1 、R 2 、R 3 Specific ranges for substituents, m and n, are as follows:
R 1 =hydrogen, methyl, ethyl, fluoro, chloro, bromo or iodo;
R 2 =hydrogen, methyl, ethyl, methoxy, ethoxy, fluoro, chloro, bromo or iodo;
R 3 =hydrogen, methyl, ethyl, methoxy, ethoxy, fluoro, chloro, bromo or iodo;
m is selected from integers from 0 to 2, when m is 0, the ring is unsubstituted; when m is greater than 1, R 2 May be the same or different;
n is an integer from 0 to 2, and when n is 0, the ring is unsubstituted; when n is greater than 1, R 3 May be the same or different.
3. The synthesis method of belinostat according to claim 1, wherein:
step 2) the polar solvent is methanol or tetrahydrofuran; the alkaline reagent is potassium carbonate or sodium hydride;
step 3) the polar solvent is acetonitrile or DMF; the alkaline reagent is sodium carbonate or potassium carbonate;
R 1 、R 2 、R 3 specific ranges for substituents, m and n, are as follows:
R 1 =hydrogen, methyl, or fluoro;
R 2 =hydrogen, methyl, methoxy or fluoro;
R 3 =hydrogen, methyl, methoxy or fluoro;
m is selected from integers from 0 to 2, when m is 0, the ring is unsubstituted; when m is greater than 1, R 2 May be the same or different;
n is an integer from 0 to 2, and when n is 0, the ring is unsubstituted; when n is greater than 1, R 3 May be the same or different.
4. The synthesis method of belinostat according to claim 1, wherein:
step 2) the polar solvent is methanol, and the alkaline reagent is potassium carbonate;
step 3) the polar solvent is DMF, and the alkaline reagent is potassium carbonate;
R 1 、R 2 、R 3 specific ranges for substituents, m and n, are as follows:
R 1 =hydrogen or methyl; r is R 2 =hydrogen or methyl; r is R 3 =hydrogen or methoxy; m is selected from 0 or 1, and when m is 0, the ring is unsubstituted; n is an integer from 0 to 2, and when n is 0, the ring is unsubstituted; when n is greater than 1, R 3 May be the same or different.
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101868446A (en) * 2007-09-25 2010-10-20 托波塔吉特英国有限公司 The synthetic method of some hydroxamic acid compound
CN102786448A (en) * 2012-08-09 2012-11-21 深圳万乐药业有限公司 Method of synthesizing belinostat
CN104478769A (en) * 2014-12-22 2015-04-01 深圳万乐药业有限公司 Belinostatsynthesis method suitable for industrial production
CN105367455A (en) * 2015-12-18 2016-03-02 深圳万乐药业有限公司 Preparation method of Belinostat isomer
CN105732444A (en) * 2016-03-28 2016-07-06 大连理工大学 Synthesis method of belinostat
CN107001354A (en) * 2014-04-11 2017-08-01 台北医学大学 Inhibitors of histone deacetylase
WO2017199264A1 (en) * 2016-05-17 2017-11-23 Biophore India Pharmaceuticals Pvt. Ltd. Novel process for the preparation of belinostat
CN109336788A (en) * 2018-10-31 2019-02-15 安徽省庆云医药股份有限公司 A kind of his preparation method of Baily department
CN109496210A (en) * 2016-07-26 2019-03-19 费森尤斯卡比肿瘤学有限公司 His polymorphic and preparation method thereof of Baily department

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1328510B1 (en) * 2000-09-29 2013-11-20 TopoTarget UK Limited (e)-n-hydroxy-3-(3-sulfamoyl-phenyl)-acrylamide compounds and their therapeutic use

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101868446A (en) * 2007-09-25 2010-10-20 托波塔吉特英国有限公司 The synthetic method of some hydroxamic acid compound
CN102786448A (en) * 2012-08-09 2012-11-21 深圳万乐药业有限公司 Method of synthesizing belinostat
CN107001354A (en) * 2014-04-11 2017-08-01 台北医学大学 Inhibitors of histone deacetylase
CN104478769A (en) * 2014-12-22 2015-04-01 深圳万乐药业有限公司 Belinostatsynthesis method suitable for industrial production
CN105367455A (en) * 2015-12-18 2016-03-02 深圳万乐药业有限公司 Preparation method of Belinostat isomer
CN105732444A (en) * 2016-03-28 2016-07-06 大连理工大学 Synthesis method of belinostat
WO2017199264A1 (en) * 2016-05-17 2017-11-23 Biophore India Pharmaceuticals Pvt. Ltd. Novel process for the preparation of belinostat
CN109496210A (en) * 2016-07-26 2019-03-19 费森尤斯卡比肿瘤学有限公司 His polymorphic and preparation method thereof of Baily department
CN109336788A (en) * 2018-10-31 2019-02-15 安徽省庆云医药股份有限公司 A kind of his preparation method of Baily department

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