阅读说明：本技术 一种取代1,3-二羰基化合物及其制备方法和应用 (Substituted 1, 3-dicarbonyl compound and preparation method and application thereof ) 是由 管西栋 卢诗超 王蕾 李炳龙 郝立勇 于 2021-08-19 设计创作，主要内容包括：本发明公开了一种取代1,3-二羰基化合物及其制备方法和应用。所述取代1,3-二羰基化合物的结构通式为：该取代1,3-二羰基化合物抗肿瘤活性较高,适用于制备抗肿瘤药物,其制备方法具有反应原料廉价易得、原子经济、绿色高效、反应时间短,产率高的特点。(The invention discloses a substituted 1, 3-dicarbonyl compound and a preparation method and application thereof. The structural general formula of the substituted 1, 3-dicarbonyl compound is as follows:)

1. A substituted 1, 3-dicarbonyl compound is characterized in that the structural general formula is as follows:

wherein the content of the first and second substances,

R¹the method comprises the following steps: hydrogen radicals, methyl radicals, butyl radicals;

R²the method comprises the following steps: phenyl, 4-fluorophenyl, 3-fluorophenyl, 2-fluorophenyl, 4-chlorophenyl, 2-chlorophenyl, 4-chloro-2-fluorobenzenePhenyl, 4-bromophenyl, 2-bromophenyl, 4-methylphenyl, 2, 6-dimethylphenyl, 4-tert-butylphenyl, 4-methoxyphenyl, 2-ethoxyphenyl, 4-phenoxyphenyl, 3-bromo-4-methoxyphenyl, 4-cyanophenyl, 4-trifluoromethylphenyl, 4-naphthyl, 4-phenylvinyl, 2-furyl, 2-thienyl, 2-pyrrolyl, cyclohexyl, methyl, methoxy, ethoxy;

R³the method comprises the following steps: phenyl, 4-bromophenyl, 4-fluorophenyl, methyl;

R⁴the method comprises the following steps: phenyl, 4-bromophenyl, 4-fluorophenyl.

2. A process for the preparation of substituted 1, 3-dicarbonyl compounds as claimed in claim 1,

the method comprises the following steps:

(1) substituted aldehyde reacts with bromoalkyne to generate alkynol compound 1

(2) Oxidizing the alkynol compound 1 obtained in the step 1 to generate an alkynone compound 2

(3) The alkynone compound 2 obtained in the step 2 and the substituted phenylsulfone are subjected to 3,3-sigmatropic rearrangement reaction to generate an aryl substituted 1, 3-dicarbonyl compound

3. The preparation method according to claim 2, wherein in the step (1), the substituted aldehyde and the bromoalkyne react in tetrahydrofuran solution at room temperature of 20-30 ℃ by using zinc powder and ammonium chloride solution as catalysts to generate the alkynol compound 1.

4. The process according to claim 3, wherein in step (2), the alkynol compound 1 obtained in step 1 is dissolved in dichloromethane and oxidized with dess-martin reagent (DMP) to produce the alkynone compound 2.

5. The process according to claim 3, wherein in the step (3), the compound 3 is produced by a 3, 3-radical rearrangement reaction in an organic solvent using an organic acid as a catalyst.

6. The method according to claim 5, wherein the organic acid is one or more of trifluoromethanesulfonic acid, acetic acid, trifluoroacetic acid, or p-toluenesulfonic acid.

7. The method according to claim 5, wherein the organic solvent is one or more of dichloromethane, chloroform, ethyl acetate, 1, 2-dichloroethane, acetonitrile, tetrahydrofuran, or acetone.

8. The preparation method according to claim 5, wherein the molar ratio of the compound 2 to the compound 3 is 1:0.5-2, and the organic acid accounts for 5-30% of the compound 2.

9. Use of the substituted 1, 3-dicarbonyl compound of claim 1 for the preparation of an anti-tumor medicament.

Technical Field

The invention relates to a compound and a preparation method thereof, in particular to a substituted 1, 3-dicarbonyl compound and a preparation method and application thereof.

Background

Cancer is a malignant disease caused by the body's inability to control cell proliferation indefinitely. In China, the incidence and mortality of cancer continue to increase due to factors such as smoking, hepatitis B infection, aging population, and environmental pollution. With the increasing life span of human beings, cancer has become the number one killer of human beings. Malignant tumor cases have become overwhelming among the world's national medical systems. Research shows that the incidence of cancer is over 50 years old, the incidence of cancer greatly increases with age, and the number of cancer patients is inevitably greatly increased as China enters an aging society. Therefore, the search for novel high-efficiency and low-toxicity antitumor drugs is urgent.

1, 3-dicarbonyl compounds are an important class of compounds in pharmaceutical chemistry, and are widely found in natural products, pharmaceuticals, and biologically active molecules. Many natural drugs with 1, 3-dicarbonyl structure have antioxidant, anticancer, antibacterial, and antiviral properties. In recent years, because the drug resistance problem is becoming more severe, the curative effect of the drugs declines year by year, and therefore, the development of novel and efficient 1, 3-dicarbonyl antitumor drugs is urgently needed.

Disclosure of Invention

In order to solve the problems in the background art, the invention provides a substituted 1, 3-dicarbonyl compound, a preparation method and an application thereof, so as to solve the problem of the anti-tumor effect of the 1, 3-dicarbonyl compound.

The first purpose of the invention is to provide a substituted 1, 3-dicarbonyl compound, which has the following structural general formula.

Wherein the content of the first and second substances,

R¹the method comprises the following steps: hydrogen radicals, methyl radicals, butyl radicals;

phenyl, 4-fluorophenyl, 3-fluorophenyl, 2-fluorophenyl, 4-chlorophenyl, 2-chlorophenyl, 4-chloro-2-fluorophenyl, 4-bromophenyl, 2-bromophenyl, 4-methylphenyl, 2, 6-dimethylphenyl, 4-tert-butylphenyl, 4-methoxyphenyl, 2-ethoxyphenyl, 4-phenoxyphenyl, 3-bromo-4-methoxyphenyl, 4-cyanophenyl, 4-trifluoromethylphenyl, 4-naphthyl, 4-phenylvinyl, 2-furyl, 2-thienyl, 2-pyrrolyl, cyclohexyl, methyl, methoxy, ethoxy;

R³the method comprises the following steps: phenyl, 4-bromophenyl, 4-fluorophenyl, methyl;

R⁴the method comprises the following steps: phenyl, 4-bromophenyl, 4-fluorophenyl.

The substituted 1, 3-dicarbonyl compound specifically includes, but is not limited to, compounds of the following 34 structures:

the second object of the present invention is to provide a method for preparing a substituted 1, 3-dicarbonyl compound, comprising the steps of:

(1) substituted aldehyde and bromoalkyne react in tetrahydrofuran solution at room temperature of 20-30 ℃ by taking zinc powder and ammonium chloride solution as catalysts to generate alkynol compound 1.

(2) Alkynols 1 are dissolved in dichloromethane and oxidized with dess-martin reagent (DMP) to give alkynones 2.

(3) The alkynone compound 2 and the substituted phenylsulfone generate a substituted 1, 3-dicarbonyl compound through a 3,3-sigmatropic rearrangement reaction.

Alternatively, in the step (3), 3-radical rearrangement reaction is carried out in an organic solvent by using an organic acid as a catalyst to generate the compound 3.

Optionally, the organic acid is one or more of trifluoromethanesulfonic acid, acetic acid, trifluoroacetic acid, or p-toluenesulfonic acid;

optionally, the organic solvent is one or more of dichloromethane, chloroform, ethyl acetate, 1, 2-dichloroethane, acetonitrile, tetrahydrofuran, or acetone;

optionally, the molar ratio of the compounds 2 and 3 is 1:0.5-2, and the organic acid accounts for 5-30% of the mole number of the compound 2.

The third purpose of the invention is to provide the application of the substituted 1, 3-dicarbonyl compound in preparing anti-tumor drugs.

Advantageous effects

The invention has the following beneficial effects:

(1) the substituted 1, 3-dicarbonyl compound provided by the invention has high anti-tumor activity and is suitable for preparing anti-tumor drugs.

(2) The preparation method of the substituted 1, 3-dicarbonyl compound provided by the invention comprises the following steps: substituted aldehyde and bromoalkyne react in tetrahydrofuran solution at room temperature of 20-30 ℃ by taking zinc powder and ammonium chloride solution as catalysts to generate alkynol compound 1; alkynols 1 are dissolved in dichloromethane and oxidized with dess-martin reagent (DMP) to give alkynones 2. The substituted 1, 3-dicarbonyl compound is generated by the reaction of the alkynone compound 2 and the substituted phenylsulfone through Michael addition and 3,3-sigmatropic rearrangement, and has the characteristics of cheap and easily obtained reaction raw materials, economical atoms and high reaction efficiency.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any inventive exercise.

FIG. 1 shows a scheme for preparing a compound 3a according to the present invention¹H NMR spectrum.

FIG. 2 is a schematic representation of the present inventionOf Compound 3a¹C NMR spectrum.

Detailed Description

The invention provides a substituted 1, 3-dicarbonyl compound, a preparation method and application thereof, which aim to solve the problem of anti-tumor effect of the 1, 3-dicarbonyl compound.

The present invention will be further described with reference to the following examples.

Example 1

A substituted 1, 3-dicarbonyl compound (compound 3a) -1-phenyl-4- (2- (phenylthio) phenyl) butane-1, 3-dione. The structure is as follows:

the synthetic route of compound 3a is shown below

The specific synthesis method of the compound 3a comprises the following steps:

(1) synthesis of 4-phenyl-3-butyn-1-ol: adding Tetrahydrofuran (THF)60ml, benzaldehyde (5.3g, 0.05mol) and bromopropyne (11.9g,0.1mol) into a single-mouth bottle, stirring, controlling the temperature to be less than 10 ℃, adding zinc powder (6.5g, 0.1mol) in batches, and dropwise adding saturated NH₄20ml of Cl solution and reacting for 12-24h at 20-30 ℃. After the reaction is finished, filtering, washing a filter cake by using ethyl acetate, separating liquid, washing the ethyl acetate by using ammonium chloride, and carrying out anhydrous MgSO₄Drying, suction filtering, decompression concentrating, column chromatography purification, [ v (petroleum ether): v (ethyl acetate) ═ 20:1]The compound, 4-phenyl-3-butyn-1-ol, was obtained in the form of a pale yellow oil 6.04g, with a yield of 82.7%.

(2) Synthesis of 4-phenyl-3-butyn-1-one: 50ml of Dichloromethane (DCM), 4-phenyl 3-butyn-1-ol (5g,0.034mol) and a dess-martin reagent (DMP, 28.8g, 0.068mol) are added into a single-mouth bottle, stirred at room temperature for 0.5h, detected, reacted, and then added with 20ml of saturated solution of sodium thiosulfate to react for 10min, dichloromethane is extracted, organic phases are combined, anhydrous magnesium sulfate is used for extraction, the organic phase is concentrated, and the product is directly used for the next reaction without purification.

(3) Synthesis of 1-phenyl-4- (2- (phenylthio) phenyl) butane-1, 3-dione: 10mL of Ethyl Acetate (EA), 4-phenyl-3-butyn-1-one (1.44g,0.01mol), diphenyl sulfoxide (2.02g, 0.01mol) and 0.1mL of trifluoromethanesulfonic acid were added to a single-neck flask, stirred at room temperature for 6 hours, the reaction was detected, after completion of the reaction, 1mL of 2N sodium hydroxide solution was added, extracted with dichloromethane (10 mL. times.2), the organic phases were combined, washed with 10mL of water, dried over anhydrous sodium sulfate, filtered, the filtrate was concentrated under reduced pressure, and purified by column chromatography [ v (petroleum ether): v (ethyl acetate) ═ 30:1], giving compound 1a as a pale yellow oil 3.2g, 92% yield.

FIG. 1 shows a scheme for preparing a compound 3a according to the present invention¹H NMR spectrum. In the context of figure 1 of the drawings,¹H NMR(300MHz,CDCl₃)δ 15.93(s,1H),7.78–7.70(m,2H),7.53–7.32(m,6H),7.27–7.14(m,6H),6.05(s,1H),3.98(s, 2H)。

FIG. 2 shows a scheme for preparing a compound 3a according to the present invention¹C NMR spectrum. In the context of figure 2, it is shown,¹³C NMR(75MHz,CDCl₃)δ 195.3,181.9,137.6,136.4,134.5,134.4,134.2,132.2,131.3,129.3,129.1,128.6,128.5,128.3, 126.9,126.4,96.5,44.4。

347.1100

HRMS(ESI-TOF):Calculated for C₂₂H₁₉O₂S,[M+H]⁺347.1100,Found 347.1094.

example 2

A substituted 1, 3-dicarbonyl compound (compound 3 f') -1-phenyl-4- (2- (phenylthio) methyl) butane-1, 3-dione. The structure is as follows:

the synthetic route for compound 3f' is shown below:

the specific synthesis method of compound 3f' is as follows:

(1) synthesis of 4-phenyl-3-butyn-1-ol: adding Tetrahydrofuran (THF)60ml, benzaldehyde (5.3g, 0.05mol) and bromopropyne (11.9g,0.1mol) into a single-mouth bottle, stirring, controlling the temperature to be less than 10 ℃, adding zinc powder (6.5g, 0.1mol) in batches, and dropwise adding saturated NH₄20ml of Cl solution and reacting for 12-24h at 20-30 ℃. After the reaction is finished, filtering, washing a filter cake by using ethyl acetate, separating liquid, washing the ethyl acetate by using ammonium chloride, and carrying out anhydrous MgSO₄Drying, suction filtering, decompression concentrating, column chromatography purification, [ v (petroleum ether): v (ethyl acetate) ═ 20:1]The compound, 4-phenyl-3-butyn-1-ol, was obtained in the form of a pale yellow oil 6.04g, with a yield of 82.7%.

(2) Synthesis of 4-phenyl-3-butyn-1-one: 50ml of Dichloromethane (DCM), 4-phenyl 3-butyn-1-ol (5g,0.034mol) and a dess-martin reagent (DMP, 28.8g, 0.068mol) are added into a single-mouth bottle, stirred at room temperature for 0.5h, detected, reacted, and then added with 20ml of saturated solution of sodium thiosulfate to react for 10min, dichloromethane is extracted, organic phases are combined, anhydrous magnesium sulfate is used for extraction, the organic phase is concentrated, and the product is directly used for the next reaction without purification.

(3) Synthesis of 1-phenyl-4- (2- (phenylthio) methyl) butane-1, 3-dione: 10mL of Ethyl Acetate (EA), 4-phenyl-3-butyn-1-one (1.44g,0.01mol), phenyl methyl sulfoxide (1.27g, 0.01mol) and 0.1mL of trifluoromethanesulfonic acid are added into a single-neck flask, the mixture is stirred at room temperature for 3 hours, the reaction is detected, after the reaction is completed, 1mL of 2N sodium hydroxide solution is added, ethyl acetate is used for extraction (10 mL. times.3), the organic phases are combined, 10mL of water is used for washing, anhydrous sodium sulfate is used for drying, the filtrate is filtered, the filtrate is concentrated under reduced pressure, and column chromatography purification is carried out to obtain [ v (petroleum ether): v (ethyl acetate) ═ 20:1], giving compound 3f' as a pale yellow oil 2.56g, 90% yield. The results of the H spectrum test for compound 3f' are as follows:

¹H NMR(300MHz,CDCl₃)δ16.01(s,1H),7.88–7.83(m,2H),7.57–7.51(m,1H),7.48– 7.43(m,2H),7.36–7.31(m,3H),7.26–7.23(m,1H),6.14(s,1H),3.91(s,2H),2.48(s,3H).

the results of the C spectrum test for compound 3f' are as follows:

¹³C NMR(101MHz,CDCl₃)δ195.4,182.1,138.2,134.6,133.7,132.2,130.6,128.6,128.6, 128.5,128.0,127.0,126.8,125.5,96.3,44.1,16.4.

HRMS(ESI-TOF):Calculated for C₁₇H₁₇O₂S,[M+H]⁺285.0944,Found 285.0940.

the mechanism of the 3,3-sigmatropic rearrangement reaction is as follows:

firstly, an alkynone compound is subjected to isomerization under the catalysis of acid, ketonic isomerization and enol isomerization are carried out, the alkynone compound is changed into an intermediate II, the intermediate II is subjected to isomerization under an acidic condition, the alkynone compound is changed into a hyphen structure III, the III and a sulfoxide compound are subjected to Michael addition reaction to generate an intermediate IV, the intermediate IV is subjected to 3, 3-migration under the acidic condition, and finally the target compound is obtained.

EXAMPLE 3 influencing factors for the Synthesis of Compound 3a

Since the radical tandem reaction is a key step in synthesizing a target product, taking the synthesis example of the compound 3a as an example, the main factors influencing the reaction are as follows: the acid and solvent systems were investigated separately. The results are shown in Table 1.

TABLE 1 Effect of reaction influencing factors on the yield of Compound 3a

As shown in table 1, the influence of the kind of solvent system on the yield of compound 3a was first examined: when a dichloromethane system is adopted and trifluoromethanesulfonic acid is used as a catalyst, the yield is highest, and the reaction can be carried out in systems such as ethyl acetate and acetonitrile. But not in methanol, and the reaction can not be carried out because the hydroxyl system in the methanol hinders the isomerization of reactants. When the triflic acid was replaced by the remaining acid, the yield decreased significantly, probably due to the lack of acidity.

Example 4

Substituted 1, 3-dicarbonyl compounds and antitumor properties

Substituted 1, 3-dicarbonyl compounds include compounds of the following structural formula:

the antitumor activity data of the 34 substituted 1, 3-dicarbonyl compounds are shown in the following table 2

TABLE 2 antitumor Activity data

The anti-proliferation activity of the target compound on four tumor cell strains is determined by adopting an MTT method, and the data is the average value of three independent experiments;

teniposide and paclitaxel were used as positive control drugs.

Evaluation of antitumor Activity in vitro

Suspending cells in logarithmic growth phase in DMEM medium containing 10% fetal calf serum, gently blowing the cells with a glass dropper to form a single cell suspension, and counting the living cells with a blood cell counting plate under a microscope. The 96-well plate was inoculated with 180. mu.L of cell suspension per well (cell concentration: 10000 cells/well), and 20. mu.L of sample solution (concentration: 20. mu. mol/L, 2. mu. mol/L, 0.2. mu. mol/L) was added per well after pre-culturing at 37 ℃ and 100% relative humidity in a 5% CO 2-containing incubator for 24 hoursL), each set is provided with 3 multiple holes. The culture was continued for 48 hours and then measured by the MTT method. mu.L of MTT solution (5mg/mL) was added to each well, and after further incubation for 4 hours, the supernatant was aspirated. Adding 100 μ L DMSO into each well, placing in a micro oscillator, oscillating for 5min to dissolve the crystal completely, performing single wavelength color comparison with enzyme labeling instrument at 492nm, measuring absorbance value of each well, and calculating IC₅₀The value is obtained.

Shown in table 2 are the antitumor activity data of 34 substituted diketone compounds. An MTT method is adopted, teniposide and paclitaxel are used as positive reference drugs, four tumor cell lines, namely a colon cancer cell line HCT-116, a breast cancer cell line MCF7 and a lung cancer cell line, namely a human liver cancer cell HepG2 and H1299, are selected, and the in-vitro anti-tumor activity of 34 compounds is tested. The results show that the compounds 3e 'and 3f' have better in vitro anti-tumor activity. The structure-activity relationship shows that: the parent structure is 1, 3-dicarbonyl, the lower the substituents at two ends, the better the antitumor effect is, such as 3e 'and 3f', while after the aryl substituent is introduced into the 3-carbonyl, the activity is slightly reduced after the non-aryl group with a smaller structure is introduced into the 1-carbonyl, such as compounds 3z, 3a 'and 3 f'; and the activity is obviously reduced after the 1-carbonyl group is introduced into the aromatic ring substituent. The compounds substituted by benzene ring methyl or halogen (1n and 1q) retain certain antitumor activity; the larger the volume of the liposoluble group introduced on the benzene ring is, the more obvious the activity reduction is (such as 3p, 3t and 3 u); if a strong electroattractive group (3r,3s) is introduced on a benzene ring or the benzene ring is replaced by an aromatic heterocyclic ring (3v-3y), the activity is reduced and even completely lost.