阅读说明：本技术 一种β硒醚咪唑类化合物在制备抗肿瘤药物中的应用 (Application of beta-selenoether imidazole compound in preparation of antitumor drugs ) 是由 王宇光 沈泓舸 李静 于 2021-08-30 设计创作，主要内容包括：本发明提供一种式(II)所示的β硒醚咪唑类化合物在制备抗肿瘤药物中的应用,本发明将咪唑和硒结合在一起,开发出了一种具有更好的抗肿瘤活性的优良化合物。合成产物对宫颈癌细胞的最高抑制率为88％,在样品浓度为20ug/mL时,所有化合物对该肿瘤细胞的抑制率均在80％以上,而且在低浓度使用时抑制率优于抗肿瘤药物Cisplatin。(The invention provides an application of a beta-selenoether imidazole compound shown in a formula (II) in preparing an anti-tumor medicament, and the invention combines imidazole and selenium to develop an excellent compound with better anti-tumor activity. The highest inhibition rate of the synthesized product on cervical cancer cells is 88%, the inhibition rate of all compounds on the tumor cells is over 80% when the sample concentration is 20ug/mL, and the inhibition rate is superior to that of an anti-tumor drug Cisplatin when the compound is used at low concentration.)

1. An application of a beta-seleno-ether imidazole compound shown in a formula (II) in preparing anti-tumor drugs,

wherein R is₁Is C_1～8Alkyl, phenyl, benzyl or by C_1～4Alkyl radical, C_1～4Alkoxy or amino substituted phenyl.

2. The use of claim 1, wherein: r₁Is C_1～4Alkyl, phenyl, benzyl or phenyl substituted by methyl, methoxy or amino.

3. Use according to claim 2, characterized in that: the beta-selenoether imidazole compound shown in the formula (II) is one of the following compounds:

4. use according to claim 3, characterized in that: the beta-selenide imidazole compound shown in the formula (II) is a compound II-6 or II-10.

5. The use of claim 1, wherein: the tumor is cervical cancer.

Technical Field

The invention relates to synthesis of a beta-selenide imidazole compound and application thereof in preparing an anti-tumor medicament.

Background

Selenium is an essential trace element in oxygen group elements, and can participate in reaction in three forms of selenium negative ions, selenium positive ions and selenium free radicals under proper conditions to form selenium-halogen bonds, selenium-carbon bonds, selenium-oxygen bonds and the like, and can also catalyze (mediate) the construction of nitrogen-carbon bonds, oxygen-carbon bonds and the like, so that the selenium-oxygen compound has an important role in modern organic synthesis, and the combined development of selenium and imidazole is rarely reported.

The imidazole compounds have wide application in the fields of anticancer drugs, beta-lactamase inhibitors, anti-inflammation, antifungal and the like. The extensive development and synthesis of imidazoles and imidazole derivatives has demonstrated different effects on cancer cells. The application of the phenanthroimidazole derivative in the aspect of resisting tumors is discussed in the research of zhao et al, and the research group finds that the phenanthroimidazole derivative can inhibit the cell proliferation of HepG2 and induce the apoptosis of HepG 2. Ozkay et al have studied more than ten new imidazole and imidazole piperazine derivatives, and have shown that these compounds exhibit greater activity against cancer cell lines. A great deal of literature indicates that the imidazole derivative has good anticancer activity, and the change of the substituent on the core imidazole ring has obvious influence on the anticancer activity.

The invention relates to a novel method for preparing a beta-selenide imidazole compound, wherein selenium is introduced into the imidazole compound to construct a beta-selenide imidazole skeleton, and the beta-selenide imidazole skeleton has good activity of inhibiting tumor cells (Hela) through tests.

Disclosure of Invention

In order to improve the activity of imidazole in various aspects, selenium is introduced into the imidazole compound, and a novel imidazole compound containing beta-selenoether is developed and tested to have good activity of inhibiting tumor cells (Hela).

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides an application of a beta-seleno-ether imidazole compound shown in a formula (II) in preparing an anti-tumor medicament,

wherein R is₁Is C_1～8Alkyl, phenyl, benzyl or by C_1～4Alkyl radical, C_1～4Alkoxy or amino substituted phenyl.

Preferably, R₁Is C_1～4Alkyl, phenyl, benzyl or phenyl substituted by methyl, methoxy or amino.

Further preferably, the β selenide imidazole compound represented by formula (II) is one of the following:

the invention particularly recommends that the beta-selenoether imidazole compound shown in the formula (II) is a compound II-6 or II-10.

Further, the tumor is cervical cancer (Hela cell).

(1) Dissolving imidazole in DMF, slowly adding the compound a after the imidazole is completely dissolved, then adding a mixed solution of water and toluene into the reaction solution, and stirring the mixture for reaction under ice bath. After the reaction is finished, carrying out suction filtration on the reaction liquid, and recrystallizing the filter cake by using toluene to obtain a white target compound b;

(2) under the condition of ice bath, NaBH₄Slowly adding the mixture into an ethanol solution of the compound b, keeping the temperature of the reaction solution not higher than room temperature, stirring the mixture at room temperature for 12 hours until the reaction is finished, then adding a proper amount of ice water into the mixture, and obtaining a white compound c through filtration and ethanol recrystallization;

(3) compound c is added to the thionyl chloride solution. The mixture was stirred at room temperature for 17 hours, and after the reaction was completed, an appropriate amount of an ice-water mixture was added to the solution, and the pH of the mixture was adjusted to neutral with potassium hydroxide. Finally, white solid III is obtained through filtration and EtOH recrystallization;

(4) dissolving the white solid III and the compound (I) in ethanol, and then adding NaBH₄Slowly adding the mixture, and reacting for 4-5 hours after gas is released. Filtering the reaction solution, and carrying out purification treatment by using silica gel plate chromatography to obtain a product shown in a formula (II).

The dosage of the imidazole is 100 to 1000 percent of the dosage of the compound a substance, preferably 500 percent; the NaBH₄In an amount of 100% to 500%, preferably 300%, of the amount of compound b; the dosage of the thionyl chloride is 100 to 800 percent, preferably 500 percent of the amount of the compound c; the dosage of the symmetric diselenide is 50-200%, preferably 60% of the dosage of the compound III; the NaBH₄The amount is 100-500%, preferably 200% of the amount of the compound III;

R₁is C_1～8Alkyl, phenyl, benzyl or by C_1～4Alkyl radical, C_1～4Alkoxy or amino substituted phenyl. Further, in the formulae (I), (II), R₁Is C_1～4Alkyl, phenyl, benzyl, 2-anisoyl, 4-anisoyl, 2-phenylamino, 2-tolyl;

preferably, the compound of formula (I) is one of the following:

further, the volume amount of DMF used in the step (1) is 0.25mL/mmol based on the amount of the substance of the compound a;

further, the volume usage of the water in the step (1) is 2.5mL/mmol based on the amount of the substance of the compound a;

further, the volume usage of the toluene in the step (1) is 0.5mL/mmol based on the amount of the substance of the compound a;

further, the volume usage of the ethanol in the step (2) is 1000mL/mmol based on the substance amount of the compound b;

further, the volume usage of ethanol in the step (4) is 1mL/mmol based on the amount of the substance of the compound III.

The progress of the reaction of the present invention can be monitored by a conventional method, for example, TLC is used to monitor the starting material to judge the time point of the reaction completion; the reaction time is usually 1-4 h.

Compared with the prior art, the invention has the beneficial effects that: the invention introduces active selenium into imidazole compounds, develops a novel imidazole compound containing beta-selenoether, and anticancer activity tests show that the highest inhibition rate of the imidazole compound on cervical cancer cells (Hela) is 88 percent, when the concentration of a sample is 20ug/mL, the inhibition rates of all compounds on the tumor cells are all more than 80 percent, and when the imidazole compound is used at low concentration, the inhibition rate is superior to that of an antitumor drug Cisplatin. Therefore, the imidazole compound containing the beta-selenoether has good activity of inhibiting tumor cells, and is expected to be developed into an anti-tumor medicament.

Detailed Description

The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.

In the present invention, cis-dichloroplatinum, Cisplatin for short (Cisplatin, CAS:15663-27-1) was purchased from Sahn's chemical technology (Shanghai), Hela cells were purchased from Wuhan Protechs Biotech, Inc., and cck8 kit was purchased from Wuhan Feien Biotech, Inc.

The compound III of the present invention is synthesized according to the methods of the documents Xu H, Su X, Guo M B, et al, design, synthesis, and biological evaluation of novel microbial analytes relating to the presence of a selected group of substances as potential anti-volatile agents [ J ]. European Journal of medical Chemistry,2020,198:112360, with the only difference that benzene is used instead of halogenated benzene.

Example 1: preparation of imidazole compound II-1 containing selenium

The reaction formula is as follows:

207mg of Compound III (1.0mmol) were dissolved in 1.0mL of anhydrous ethanol under a nitrogen atmosphere and were used. Adding 113mg (0.6mmol) of dimethyl diselenide (I-1) and 1.0mL of absolute ethyl alcohol into a reaction bottle, stirring at room temperature, weighing 76mg (2mmol) of sodium borohydride, adding into the reaction bottle, reacting at 60 ℃ for 0.5h, adding the prepared absolute ethyl alcohol solution of the compound III into the reaction bottle by using an injector, continuing to react at 60 ℃ for 3.0h, filtering after the reaction is finished, washing a filter cake by using 2.0mL of dichloromethane, combining filtrates, detecting the yield by using a normalization method GC-MS (gas chromatography-mass spectrometry) to be 96%, removing an organic solvent from the filtrate by using a rotary evaporator, further separating and purifying the residue by using column chromatography, wherein an eluent is ethyl acetate: and (3) collecting the eluent containing the target product, evaporating the eluent to obtain compound II-1233 mg with the separation yield of 88% and the purity of 98.2% by GC-MS detection. The structure of the compound of formula II-1 is characterized as follows:

¹H NMR(500MHz,CDCl₃)δ7.32-7.28(m,3H),7.26-7.19(m,3H),6.95(s,1H),6.75(s,1H),4.42(d,J＝7.6Hz,2H),4.14(t,J＝7.5Hz,1H),1.83(s,3H)；¹³C NMR(126MHz,CDCl₃)δ139.08,137.24,129.28,128.90,127.90,127.69,118.97,52.43,44.63,5.03；GC-MS(EI):m/z 266.0[M⁺].

example 2: preparation of selenium-containing imidazole compound II-2

The reaction formula is as follows:

207mg of Compound III (1.0mmol) were dissolved in 1.0mL of anhydrous ethanol under a nitrogen atmosphere and were used. Adding 130mg (0.6mmol) of diethyl diselenide (I-2) and 1.0mL of absolute ethyl alcohol into a reaction bottle, stirring at room temperature, weighing 76mg (2mmol) of sodium borohydride, adding into the reaction bottle, reacting at 60 ℃ for 0.5h, adding the prepared absolute ethyl alcohol solution of the compound III into the reaction bottle by using an injector, continuing to react at 60 ℃ for 3.0h, filtering after the reaction is finished, washing a filter cake by using 2.0mL of dichloromethane, combining filtrates, detecting the yield by using a GC-MS (normalized method) method to 92%, removing an organic solvent from the filtrate by using a rotary evaporator, further separating and purifying the residue by using column chromatography, wherein an eluent is ethyl acetate: and (3) collecting the eluent containing the target product, evaporating the eluent to obtain the compound II-2232 mg, wherein the separation yield is 83 percent, and the purity is 97.4 percent by GC-MS detection. The structure of the compound of formula II-2 is characterized as follows:

¹H NMR(500MHz,CDCl₃)δ7.42-7.34(m,5H),7.15(s,1H),6.95(d,J＝1.1Hz,1H),6.73(dd,J＝3.0,1.8Hz,1H),4.42(d,J＝7.6Hz,2H),4.23(t,J＝7.6Hz,1H),2.41(qd,J＝7.5,1.9Hz,2H),1.30(t,J＝7.5Hz,3H)；¹³C NMR(126MHz,CDCl₃)δ139.48,134.39,128.91,128.04,127.74,126.16，118.91,52.85,43.41,18.66,15.40；GC-MS(EI):m/z 280.0[M⁺].

example 3: preparation of imidazole compound II-3 containing selenium

The reaction formula is as follows:

207mg of Compound III (1.0mmol) were dissolved in 1.0mL of anhydrous ethanol under a nitrogen atmosphere and were used. Adding diisopropyl diselenide I-3146 mg (0.6mmol) and 1.0mL of absolute ethyl alcohol into a reaction bottle, stirring at room temperature, weighing and adding 76mg (2mmol) of sodium borohydride into the reaction bottle, reacting at 60 ℃ for 0.5h, adding the prepared absolute ethyl alcohol solution of the compound III into the reaction bottle by using an injector, continuing to react at 60 ℃ for 3.0h, filtering after the reaction is finished, washing a filter cake by using 2.0mL of dichloromethane, combining filtrates, detecting the yield by using a GC-MS (gas chromatography-Mass spectrometer) by using an normalization method to be 97%, removing an organic solvent from the filtrate by using a rotary evaporator, further separating and purifying the residue by using column chromatography, wherein an eluent is ethyl acetate: and (3) collecting the eluent containing the target product, evaporating the eluent to obtain the compound II-3255 mg, wherein the separation yield is 87%, and the purity is 98.5% by GC-MS detection. The structure of the compound of formula II-3 is characterized as follows:

¹H NMR(500MHz,CDCl₃)δ7.24-7.14(m,6H),6.87(s,1H),6.66(s,1H),4.39-4.26(m,2H),4.17(dd,J＝8.4,6.6Hz,1H),2.78(p,J＝6.8Hz,1H),1.28(d,J＝6.8Hz,3H),1.24(d,J＝6.9Hz,3H)；¹³C NMR(126MHz,CDCl₃)δ139.89,129.06,128.86,128.82,127.73,127.70,126.13,53.05,43.40,30.94,24.52,24.19；GC-MS(EI):m/z 294.1[M⁺]

example 4: preparation of selenium-containing imidazole compound II-4

The reaction formula is as follows:

207mg of Compound III (1.0mmol) were dissolved in 1.0mL of anhydrous ethanol under a nitrogen atmosphere and were used. Adding dibutyl diselenide I-4163 mg (0.6mmol) and 1.0mL of absolute ethyl alcohol into a reaction bottle, stirring at room temperature, weighing sodium borohydride 76mg (2mmol), adding the sodium borohydride into the reaction bottle, reacting at 60 ℃ for 0.5h, adding the prepared absolute ethyl alcohol solution of the compound III into the reaction bottle by using an injector, continuing to react at 60 ℃ for 3.0h, filtering after the reaction is finished, washing a filter cake by using 2.0mL of dichloromethane, combining the filtrates, detecting the yield by using a GC-MS (gas chromatography-mass spectrometry) method to 96%, removing an organic solvent from the filtrate by using a rotary evaporator, and further separating and purifying the residue by using column chromatography, wherein an eluent is ethyl acetate: and (3) collecting the eluent containing the target product, evaporating the eluent to obtain compound II-4267 mg, wherein the separation yield is 87%, and the purity is 98.0% by GC-MS detection. The structure of the compound of formula II-4 is characterized as follows:

¹H NMR(500MHz,CDCl₃)δ7.24-7.13(m,6H),6.88(s,1H),6.67(s,1H),4.34(d,J＝7.5Hz,2H),4.14(t,J＝7.5Hz,1H),2.33(t,J＝7.5Hz,2H),1.46(p,J＝7.3Hz,2H),1.24(qd,J＝7.3,1.8Hz,2H),0.77(t,J＝7.4Hz,3H)；¹³C NMR(126MHz,CDCl₃)δ139.54,137.18,129.06,128.78,127.72,127.70,118.96,52.71,43.54,32.18,24.80,22.83,13.47；GC-MS(EI):m/z 308.1[M⁺].

example 5: preparation of imidazole compound II-5 containing selenium

207mg of Compound III (1.0mmol) were dissolved in 1.0mL of anhydrous ethanol under a nitrogen atmosphere and were used. Adding dibenzyldiselenide I-5204 mg (0.6mmol) and 1.0mL of absolute ethyl alcohol into a reaction bottle, stirring at room temperature, weighing and adding 76mg (2mmol) of sodium borohydride into the reaction bottle, reacting at 60 ℃ for 0.5h, adding the prepared absolute ethyl alcohol solution of the compound III into the reaction bottle by using an injector, continuing to react at 60 ℃ for 3.0h, filtering after the reaction is finished, washing a filter cake by using 2.0mL of dichloromethane, combining filtrates, detecting the yield by using a GC-MS (gas chromatography-Mass spectrometer) by using an normalization method to obtain 93%, removing an organic solvent from the filtrate by using a rotary evaporator, and further separating and purifying the residue by using column chromatography, wherein an eluent is ethyl acetate: and (3) collecting the eluent containing the target product, evaporating the eluent to obtain the compound II-5290 mg, wherein the separation yield is 85%, and the purity is 97.7% by GC-MS detection.

¹H NMR(500MHz,CDCl₃)δ7.30(d,J＝8.5Hz,4H),7.23(dd,J＝12.6,7.2Hz,4H),7.17-7.11(m,3H),6.91(s,1H),6.59(s,1H),4.33(dd,J＝14.2,9.0Hz,1H),4.24(dd,J＝14.2,6.1Hz,1H),3.99(dd,J＝9.1,6.1Hz,1H),3.65(s,2H)；¹³C NMR(126MHz,CDCl₃)δ139.25,138.23,137.17,129.03,128.95,128.76,128.66,127.92,127.78,127.15,118.99,52.64,43.87,28.69；GC-MS(EI):m/z 342.1[M⁺].

Example 6: preparation of imidazole compound II-6 containing selenium

The reaction formula is as follows:

207mg of Compound III (1.0mmol) were dissolved in 1.0mL of anhydrous ethanol under a nitrogen atmosphere and were used. Adding diphenyl diselenide I-6187 mg (0.6mmol) and 1.0mL of absolute ethyl alcohol into a reaction bottle, stirring at room temperature, weighing and adding 76mg (2mmol) of sodium borohydride into the reaction bottle, reacting at 60 ℃ for 0.5h, adding the prepared absolute ethyl alcohol solution of the compound III into the reaction bottle by using an injector, continuing to react at 60 ℃ for 3.0h, filtering after the reaction is finished, washing a filter cake by using 2.0mL of dichloromethane, combining filtrates, detecting the yield by using a GC-MS (gas chromatography-mass spectrometry) method of 82%, removing an organic solvent from the filtrate by using a rotary evaporator, and further separating and purifying the residue by using column chromatography, wherein an eluent is ethyl acetate: and (3) collecting the eluent containing the target product, evaporating the eluent to obtain compound II-6242 mg, wherein the separation yield is 74%, and the purity is 97.0% by GC-MS detection. The structure of the compound of formula II-6 is characterized as follows:

¹H NMR(500MHz,CDCl₃)δ7.47-7.40(m,2H),7.26-7.05(m,9H),6.84(s,1H),6.54(s,1H),4.42-4.34(m,2H),4.29(td,J＝11.0,8.5Hz,1H)；¹³C NMR(126MHz,CDCl₃)δ138.55,137.14,135.25,129.33,129.02,128.84,128.51,128.43,127.99,127.69,118.91,52.02,47.99；GC-MS(EI):m/z 328.0[M⁺].

example 7: preparation of selenium-containing imidazole compound II-7

The reaction formula is as follows:

207mg of Compound III (1.0mmol) were dissolved in 1.0mL of anhydrous ethanol under a nitrogen atmosphere and were used. Adding di (o-methoxyphenyl) diselenide I-7223 mg (0.6mmol) and 1.0mL of absolute ethyl alcohol into a reaction bottle, stirring at room temperature, weighing sodium borohydride 76mg (2mmol), adding into the reaction bottle, reacting at 60 ℃ for 0.5h, adding the prepared absolute ethyl alcohol solution of the compound III into the reaction by using an injector, continuing to react at 60 ℃ for 3.0h, filtering after the reaction is finished, washing a filter cake by using 2.0mL of dichloromethane, combining filtrates, detecting the yield by using a normalization method GC-MS (gas chromatography-mass spectrometry) to be 89%, removing an organic solvent from the filtrate by using a rotary evaporator, further separating and purifying the residue by using column chromatography, wherein an eluent is ethyl acetate: and (3) collecting the eluent containing the target product, evaporating the eluent to obtain a compound II-7286 mg, wherein the separation yield is 80%, and the purity is 98.0% by GC-MS detection.

¹H NMR(500MHz,CDCl₃)δ7.46(dd,J＝7.5,1.7Hz,1H),7.31(ddd,J＝8.3,7.3,1.7Hz,1H),7.28-7.19(m,5H),7.16(s,1H),6.93-6.85(m,3H),6.58(s,1H),4.65(dd,J＝9.7,4.9Hz,1H),4.46(dd,J＝14.2,9.7Hz,1H),4.36(dd,J＝14.2,5.0Hz,1H),3.89(d,J＝0.8Hz,3H)；¹³C NMR(126MHz,CDCl₃)δ159.01,138.57,137.12,135.45,130.03,129.00,128.83,127.96,127.75,121.50,118.89,117.70,111.03,55.90,52.39,45.66；GC-MS(EI):m/z 358.1[M⁺].

Example 8: preparation of selenium-containing imidazole compound II-8

The reaction formula is as follows:

207mg of Compound III (1.0mmol) were dissolved in 1.0mL of anhydrous ethanol under a nitrogen atmosphere and were used. Adding di (p-methoxyphenyl) diselenide I-8223 mg (0.6mmol) and 1.0mL of absolute ethyl alcohol into a reaction bottle, stirring at room temperature, weighing sodium borohydride 76mg (2mmol), adding into the reaction bottle, reacting at 60 ℃ for 0.5h, adding the prepared absolute ethyl alcohol solution of the compound III into the reaction by using an injector, continuing to react at 60 ℃ for 3.0h, filtering after the reaction is finished, washing a filter cake by using 2.0mL of dichloromethane, combining filtrates, detecting the yield by using a normalization method GC-MS (gas chromatography-mass spectrometry) to be 90%, removing an organic solvent from the filtrate by using a rotary evaporator, further separating and purifying the residue by using column chromatography, wherein an eluent is ethyl acetate: and (3) collecting the eluent containing the target product, evaporating the eluent to obtain the compound II-8297 mg, wherein the separation yield is 83%, and the purity is 98.5% by GC-MS detection. The structure of the compound of formula II-8 is characterized as follows:

¹H NMR(500MHz,CDCl₃)δ7.45-7.37(m,2H),7.28-7.21(m,3H),7.17(s,1H),7.13-7.09(m,2H),6.88(s,1H),6.85-6.78(m,2H),6.60(d,J＝1.3Hz,1H),4.45(dd,J＝14.0,9.5Hz,1H),4.41-4.28(m,2H),3.80(s,3H)；¹³C NMR(126MHz,CDCl₃)δ160.28,138.76,137.71,137.14,129.08,128.81,127.90,127.63,118.85,118.45,114.95,55.29,51.96,48.24；GC-MS(EI):m/z 358.1[M⁺].

example 9: preparation of selenium-containing imidazole compound II-9

The reaction formula is as follows:

207mg of Compound III (1.0mmol) were dissolved in 1.0mL of anhydrous ethanol under a nitrogen atmosphere and were used. Adding di (o-aminophenyl) diselenide I-9205 mg (0.6mmol) and 1.0mL of absolute ethyl alcohol into a reaction bottle, stirring at room temperature, weighing and adding sodium borohydride 76mg (2mmol) into the reaction bottle, reacting at 60 ℃ for 0.5h, adding the prepared absolute ethyl alcohol solution of the compound III into the reaction bottle by using an injector, continuing to react at 60 ℃ for 3.0h, filtering after the reaction is finished, washing a filter cake by using 2.0mL of dichloromethane, combining filtrates, detecting the yield by using a normalization method GC-MS (gas chromatography-mass spectrometry) to be 91%, removing the organic solvent from the filtrate by using a rotary evaporator, further separating and purifying the residue by using column chromatography, wherein an eluent is ethyl acetate: and (3) collecting the eluent containing the target product, evaporating the eluent to obtain the compound II-9281 mg, wherein the separation yield is 82%, and the purity is 97.8% by GC-MS detection. The structure of the compound of formula II-9 is characterized as follows:

¹H NMR(500MHz,CDCl₃)δ7.40(dd,J＝7.6,1.6Hz,1H),7.29-7.24(m,3H),7.21-7.12(m,4H),6.87(s,1H),6.76(dd,J＝8.0,1.3Hz,1H),6.68-6.56(m,2H),4.48(dd,J＝13.3,9.3Hz,1H),4.42-4.38(m,1H),4.34(dd,J＝13.2,4.9Hz,1H)；¹³C NMR(126MHz,CDCl₃)δ149.08,138.78,138.57,137.18,131.21,129.01,128.89,128.01,127.49,118.91,118.72,114.92,112.81,52.01,46.53；GC-MS(EI):m/z343.1[M⁺].

example 10: preparation of selenium-containing imidazole compound II-10

The reaction formula is as follows:

207mg of Compound III (1.0mmol) were dissolved in 1.0mL of anhydrous ethanol under a nitrogen atmosphere and were used. Adding 204mg (0.6mmol) of di (o-methylphenyl) diselenide I-10 and 1.0mL of absolute ethyl alcohol into a reaction bottle, stirring at room temperature, weighing 76mg (2mmol) of sodium borohydride, adding into the reaction bottle, reacting at 60 ℃ for 0.5h, adding the prepared absolute ethyl alcohol solution of the compound III into the reaction by using an injector, continuing to react at 60 ℃ for 3.0h, filtering after the reaction is finished, washing a filter cake by using 2.0mL of dichloromethane, combining filtrates, detecting the yield by using a normalization method GC-MS (gas chromatography-mass spectrometry) to be 85%, removing the organic solvent from the filtrate by using a rotary evaporator, further separating and purifying the residue by using column chromatography, wherein an eluent is ethyl acetate: and (3) collecting the eluent containing the target product, evaporating the eluent to obtain the compound II-10266 mg, wherein the separation yield is 78%, and the purity is 96.7% by GC-MS detection. The structure of the compound of formula II-10 is characterized as follows:

¹H NMR(500MHz,CDCl₃)δ7.56-7.50(m,1H),7.43-7.33(m,1H),7.29-7.26(m,2H),7.25-7.23(m,2H),7.18-7.09(m,4H),6.88(s,1H),6.58(d,J＝1.3Hz,1H),4.48(dd,J＝12.9,8.9Hz,1H),4.37(ddd,J＝17.7,13.3,4.7Hz,2H),2.39(s,3H)；¹³C NMR(126MHz,CDCl₃)δ141.52,138.55,137.10,135.57,130.41,129.71,129.12,128.90,128.06,127.64,126.76,126.18,118.82,52.16,47.38,22.90；GC-MS(EI):m/z 342.1[M⁺].

example 11: antitumor test of imidazole Compounds containing selenium

CCK-8 experiment is adopted to detect the cytotoxicity of the sample to be detected on Hela cells, so as to evaluate the anti-tumor effect of Cisplatin and the imidazole compounds II-1 to II-10 containing selenium. Taking the compound II-1 as an example, the specific operation is as follows: (1) placing the Hela cells in a T25 cell culture dish for adherent culture under the condition of 5 percent CO₂And 37 ℃, the culture solution is a DMEM solution containing 10% FBS. When it had grown to log phase, the T25 cell culture dish was removed from the incubator and digested by the addition of 2mL of trypsin. (2) After digestion was complete, 1mL of trypsin was aspirated with a pipette, added to a 1.5mL EP tube, centrifuged at 1500rpm for 5 minutes, trypsin was discarded, and a 10% FBS-containing DMEM medium was added to suspend and dilute the suspension until the cell density of the medium was 1X 10⁵and/mL. The cell suspension was added to a 96-well plate with a volume of 100. mu.L per well using a 1mL pipette, 100. mu.L of cell-free culture medium was added to the blank, and the 96-well plate was placed in a cell incubator for overnight incubation. (3) When the cells in the 96-well plate grow to the cell log phase, 1 mu L of the sample to be detected with different concentrations is sucked into the experimental group, and three multiple wells are set for incubation for 24h at each concentration. After incubation, 10. mu.L of CCK8 reagent was added to each well at 37 ℃ with 5% CO₂And then cultured in the incubator for 2 hours. Control groups were added with 1. mu.L of DMSO containing the corresponding concentration. After the culture for 2h, the absorbance value is measured at 450nm by using a microplate reader. Is calculated by the following formulaThe cell inhibition rate is as follows:

and (3) respectively changing the compound II-1 in the steps into Cisplatin, compounds II-2, II-3, II-4, II-5, II-6, II-7, II-8, II-9 and II-10, and keeping the rest unchanged, so that the anti-tumor effects of the compounds II-2 to II-10 can be measured.

As can be seen from the above table, compounds II-1 to II-10 all had significant inhibitory effects on Hela cells. When the concentration of the sample is 5ug/mL, the inhibition rate of the compounds II-1 to II-10 on Hela cells is basically between 69 and 78 percent and is better than Cisplatin, the inhibition effect is best, the compounds II-6 and II-10 have substituents of 2-methyl selenophenyl and selenoethyl respectively, and the inhibition concentration on the Hela cells can reach 81 percent and 80 percent. The difference in substituents at this concentration has substantially less effect on the inhibitory effect.

When the concentration is 10ug/mL, the inhibition rate of Cisplatin on Hela cells is 78%, and the inhibition rate of compound II-4 on Hela cells is lower than that of Cisplatin; the inhibition rate of the compounds II-1, II-3, II-5, II-7, II-8 and II-10 on Hela cells is between 78 and 80 percent, and is similar to the inhibition rate of Cisplatin on Hela cells; the inhibition rate of compounds II-2, II-6 and II-9 on Hela cells is slightly larger than that of Cisplatin on Hela cells.

With the further increase of the drug concentration to 20ug/mL, the inhibition rate of Cisplatin on Hela cells is 87.5%, which is slightly higher than the inhibition rate of compounds II-2, II-5 and II-10 on Hela cells, and is obviously higher than the inhibition rate of compounds II-1, II-3, II-4, II-6, II-7, II-8 and II-9.

When the concentration of the medicine is 40ug/mL, the compounds II-1 to II-10 have good inhibition rate on Hela cells: between 79% and 88.9%, but all were less than the rate of inhibition of Hela cells by Cisplatin (92%).

In conclusion, compounds II-1 to II-10 all had significant inhibitory effects on Hela cells, with their inhibitory activity on Hela cells being superior to Cisplatin at low concentrations and lower at high concentrations.