TW201831191A - Novel boric acid derivative and pharmaceutical composition using same - Google Patents

Abstract

The present invention discloses a novel boric acid derivative and a pharmaceutical composition using the same, pertaining to the field of medicinal chemistry. The boric acid derivative is a compound represented by formula (I). The present invention further provides a use of the boric acid derivative in the preparation of an antitumor drug or a proteasome inhibitor drug. Specifically, the present invention provides a use of the boric acid derivative in the preparation of a proteasome chymotrypsin-like protease inhibitor drug, and a use in drugs for the prophylaxis and/or treatment of cancer such as multiple myeloma and colon cancer, providing a new choice for clinical screening and/or preparation of proteasome inhibitor drugs and drugs for cancer such as multiple myeloma and colon cancer, having wide application prospects.

Description

A new boric acid derivative and its pharmaceutical composition

The invention belongs to the field of medicinal chemistry, and in particular relates to an antitumor compound and a pharmaceutical composition thereof.

Ubiquitin-proteasome pathway-mediated protein degradation is an important mechanism by which the body regulates intracellular protein levels and functions. Once the proteasome exceeds normal levels, it causes a decrease in growth inhibition, a decrease in apoptosis, and promotes angiogenesis, which causes various tumor diseases. Therefore, the proteasome is an important target for drugs such as cancer. Proteasome inhibitors inhibit tumor cell growth and promote apoptosis by blocking cellular proteasome degradation.

Multiple myeloma (MM) is a plasma cell carcinoma found in the bone marrow. In multiple myeloma, a group of plasma cells or myeloma cells are transformed into cancer cells and proliferate, making the number of plasma cells higher than normal. Because plasma cells migrate extensively in the body, it is likely to involve most of the bones in the body, which may lead to compression fractures, osteolytic lesions and related pain. Multiple myeloma can cause several serious health problems, involving red blood cell counts in the bones, immune system, kidneys, and individuals. Some of the more common symptoms include bone pain and fatigue.

Colon cancer is also a high-risk type of tumor, and although there are already a large number of therapeutic drugs and means, high-value therapeutic drugs in this field are still an unmet clinical need.

Bortezomib and Ninlaro (Ixazomib Citrate) are proteasome inhibitors that block the enzymes of multiple myeloma cells and impede their ability to grow and survive. The structures are as follows: .

WO 2012/177835 discloses derivatives of the following structures of Ixazomib: (code name Ixazomib DEA)

Although Ixazomib and Ixazomib-DEA have an inhibitory effect on the proliferation of tumor cell lines, it is highly desirable to seek a compound having a superior inhibitory effect on the proliferation of tumor cell lines.

In order to solve the above problems, the present invention provides a novel boric acid derivative and a pharmaceutical composition thereof.

The present invention provides a compound of the formula (I) or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof or boric anhydride: Wherein S _{1 is} selected from the group consisting of F, Cl, Br, I, C _1-6 alkyl, cyano or trifluoromethyl; and S _{2 is} selected from H, C _1-6 alkyl, cyano or trifluoromethyl When S _{1 is} selected from F, Cl, Br, I, S _{2 is} not H; R _{2 is} selected from C _1-6 alkyl; X ₁ and X _{2 are} selected from hydroxyl groups, or X ₁ and X ₂ are boron The atoms together form a substituted or unsubstituted 5-20 membered ring which additionally includes 0-2 heteroatoms selected from nitrogen, oxygen or sulfur.

Further, the compound is as shown in formula (II): Wherein R ₃ and R _{4 are} selected from hydrogen, or R ₃ and R ₄ together with the oxygen and boron atoms form a substituted or unsubstituted 5-20 membered ring, the ring further comprising 0-2 selected from the group consisting of A ring heteroatom of nitrogen, oxygen or sulfur.

Further, the substituent of the 5-20 membered ring is 0-4 R ₁₁ ; wherein R _{11 is} each independently selected from the group consisting of hydrazine, -OH, -COOH, -L ₁ -OH, -L ₁ -COOH, C ₁ -C ₄ alkyl, =Y, wherein L _{1 is} selected from C ₁ -C ₄ alkylene, Y is O or S; or two adjacent substituents R ₁₁ are bonded to form a substituent substituted by 0-4 R ₁₂ a 3-8 membered cycloalkane, a 3-8 membered heterocyclic ring, an arene or a heteroarene; wherein R ₁₂ are each independently selected from the group consisting of hydrazine, -OH, -COOH, -L ₁ -OH, -L ₁ -COOH, C ₁ -C ₄ alkyl, amine, F, Cl.

Further, the compound is as shown in formula (III): .

Further, R _{2 is} selected from the group consisting of isobutyl groups.

Further, X ₁ and X _{2 are} selected from a hydroxyl group, or X ₁ and X ₂ together form a moiety which is ring-formed with two functional groups of the borate esterifying agent.

Further, X ₁ and X _{2 are} selected from a hydroxyl group.

Further, the borating agent is selected from the group consisting of compounds containing at least one hydroxyl group or at least one carboxyl group.

Further, the borating agent is a borate esterifying agent containing N atoms.

Further, when X ₁ and X ₂ together form a moiety which is ring-formed with two functional groups of the borate esterifying agent, the ring formed is a 5-10 membered ring.

Further, the borating agent is selected from the group consisting of monosaccharides.

Further, the borating agent is selected from the group consisting of C _4-10 saturated borating agents, wherein the sum of the number of hydroxyl groups and carboxyl groups is 2-4.

Further, the borating agent is selected from the group consisting of mannitol, citric acid, substituted salicylic acid, substituted hydroxydecyl salicylate, malic acid, tartaric acid, glucose, diethanolamine, dipropanolamine, triethanolamine, three Any one of propanolamine, N-methyldiethanolamine, N-butyldiethanolamine, and N,N-bis(2-hydroxyethyl)glycine.

Further, the borating agent is selected from the group consisting of diethanolamine, dipropanolamine, triethanolamine, tripropanolamine, N-methyldiethanolamine, N-butyldiethanolamine, N,N-bis(2- Hydroxyethyl)glycine, citric acid.

Further, the substituents of the substituted salicylic acid and the substituted hydroxyindole salicylate are each independently selected from the group consisting of H, C _1-6 alkyl, carboxyl, hydroxyl, C _1-6 alkoxy, fluorine, chlorine , amino group.

Further, the ring Selected from the following structure: .

Further, the compound is as shown in formula (Ia):

Further, the compound (Ia) is one of the following structures: .

Further, the compound is as shown in the formula (Ib): Wherein n ₁ , n _{2 are} selected from 1 or 2; R _{5 is} selected from H, C _1-6 alkyl, -L ₁ -OH or -L ₁ -COOH, wherein L _{1 is} selected from C ₁ -C ₄ Alkylene.

Further, the compound (Ib) is as shown in the formula (Ib1):

Further, the compound (Ib1) is one of the following structures:

Further, the compound (Ib) is as shown in the formula (Ib2): R ₅ ^{'' is} selected from the group consisting of H, C _1-6 alkyl, 3-hydroxypropyl. Further, the compound (Ib2) is one of the following structures:

Further, the compound is as shown in the formula (Ic): Wherein n ₃ and n ₄ are each independently selected from 0 or 1.

Further, the compound is as shown in the formula (Ic1): Further, the compound (Ic1) is one of the following structures: .

Further, the compound is as shown in the formula (Ic2): . Further, the compound (Ic2) is one of the following structures: .

Further, the compound is represented by the formula (Id): Wherein X is selected from O or NR, and R is OH; and R _{7 is} selected from the group consisting of H, C _1-6 alkyl, C _1-6 alkoxy, hydroxy, carboxy, amine, F, Cl, Br, I. Further, the compound (Id) is one of the following structures: .

The present invention also provides the use of the compound, or a pharmaceutically acceptable salt thereof, or a prodrug thereof, or a solvate thereof, or a boric anhydride, for the preparation of an antitumor drug or a proteasome inhibitor.

Further, the proteasome inhibitor drug is a proteasome chymotrypsin-like protease inhibitor drug.

Further, the antitumor drug is a drug for preventing and/or treating plasmacytoma.

Further, the plasmacytoma is multiple myeloma.

Further, the tumor is colon cancer, cervical cancer, lung cancer, lymphoma, ovarian cancer, kidney cancer, stomach cancer, nasopharyngeal cancer.

The present invention also provides a pharmaceutical composition which is prepared by using the compound or a pharmaceutically acceptable salt thereof or boric anhydride as an active ingredient, together with a pharmaceutically acceptable adjuvant.

Wherein the pharmaceutically acceptable adjuvant is selected from any one or more of a diluent, a filler, a colorant, a glidant, a lubricant, a binder, a stabilizer, a suspending agent or a buffer.

Further, the preparation is a tablet, a capsule, an oral solution, an injection, a transdermal agent, an aerosol solid preparation, a liposome preparation or a controlled release preparation.

The compounds and derivatives provided in the present invention may be named according to the IUPAC (International Union of Pure and Applied Chemistry) or CAS (Chemical Abstracts Service, Columbus, OH) nomenclature system.

Definitions of terms of use in connection with the present invention: Unless otherwise stated, the initial definitions provided herein by the group or term apply to the group or term of the entire specification; for terms not specifically defined herein, it should be based on the disclosure and context. The meanings that those of ordinary skill in the art to which the present invention pertains can be given are given.

"Substitution" means that a hydrogen atom in a molecule is replaced by a different atom or molecule.

In the present invention, the C _1-6 alkyl group means a C ₁ , C ₂ , C ₃ , C ₄ , C ₅ , C ₆ alkyl group, that is, a linear or branched chain having 1 to 6 carbon atoms. Alkyl groups such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, sec-butyl, pentyl, hexyl and the like.

In the present invention, "X ₁ and X ₂ together with a boron atom form a substituted or unsubstituted 5-20 membered ring, and the ring further includes 0-2 heterocyclic atoms selected from nitrogen, oxygen or sulfur" The -20 membered ring means a monocyclic or polycyclic ring, and the number of carbon atoms in the monocyclic or polycyclic ring and nitrogen, oxygen or sulfur is 5-20, and the monocyclic or polycyclic ring may be saturated. It can also be unsaturated. E.g: , , , , , , , , , Wait.

Similarly, "R ₃ and R ₄ together with an oxygen and a boron atom form a substituted or unsubstituted 5-20 membered ring, which additionally includes 0 to 2 ring heteroatoms selected from nitrogen, oxygen or sulfur." The 5-20 membered ring in the ring means a single ring or a polycyclic ring, and the number of carbon atoms in the single ring or polycyclic ring and nitrogen, oxygen or sulfur is 5-20, and the single ring or polycyclic ring may be Saturated, it can also be unsaturated. E.g: , , , , Wait.

"X ₁ and X ₂ together form a portion which is ring-formed with two functional groups of the borate esterifying agent" means that X ₁ and X ₂ together with the two functional groups of the borating acidifying agent are dehydrated to form a ring. .

The prodrugs are derivatives of the aforementioned compounds which may themselves have weak or no activity, but are converted to corresponding conditions under physiological conditions (for example by metabolism, solvolysis or otherwise) after administration. Biologically active form. Also included is a prototype compound which, even under in vitro enzyme or cell activity, rapidly releases the active compound of the present invention in vivo under physiological conditions, and the prototype compound is also considered to be a prodrug of the compound of the present invention.

The key intermediates and compounds of the present invention are isolated and purified in a manner that is commonly used in organic chemistry for separation and purification.

One or more compounds of the invention may be used in combination with one another, or the compounds of the invention may be used in combination with any other active agent for the preparation of an anti-tumor or proteasome inhibitor. If a group of compounds is used, the compounds can be administered simultaneously, separately or sequentially to the test article.

The compound of the present invention can be combined with other drugs based on the principle of anti-tumor synergistic mechanism, including sequential administration or simultaneous administration, to improve anti-tumor efficacy, delay drug resistance, and reduce drug toxicity. These drugs which can be used in combination with the compounds of the present invention include, but are not limited to, cytotoxic drugs such as carboplatin, cisplatin, irinotecan, paclitaxel, fluorouracil, cytarabine, lenalidomide, retinoic acid; Hormone drugs such as dexamethasone, fulvestrant, tamoxifen, etc.; molecular target drugs such as erlotinib, lapatinib, trastuzumab; adjuvant therapy drugs, such as recombinants Granulocyte colony-stimulating factor, erythropoietin, pamidronate disodium, zoledronic acid, and the like.

The pharmaceutically acceptable excipient of the present invention means a substance which is contained in a dosage form in addition to the active ingredient.

In addition to application to multiple myeloma, the compounds of the present invention also exhibit inhibitory effects against a variety of other cancers.

In the present invention, the boric acid refers to a compound containing a -B(OH) ₂ moiety. The boric acid compound can form an oligomeric anhydride by partially dehydrating the boric acid. In the present invention, the boric anhydride refers to a compound formed by combining two or more boric acid compound molecules while losing one or more water molecules. When mixed with water, the boric anhydride compound is hydrated to release the free boric acid compound. In various embodiments, the boric anhydride may contain two, three, four or more boric acid units, and may have a cyclic or linear configuration. For example, the following ring structure: or

The linear structure described below: n can be an integer from 0-10.

In the present invention, the borate esterifying agent refers to any compound having at least two functional groups, each of which can form a covalent bond with boron, such as a hydroxyl group and a carboxyl group.

The "room temperature" described in the present invention is 25 ± 5 °C.

The "overnight" as described herein is 12 ± 1 hour.

The present invention provides a novel boric acid derivative of the formula I, wherein the substituent on the benzene ring of the boronic acid derivative represented by the formula I of the present invention may be selected from a C _1-6 alkyl group, a cyano group, a trifluoromethyl group. Or/and in combination with halogen, the substituents in the prior art are all halogens and combinations thereof (WO 2012/177835). The present invention also provides the use of the boric acid derivative in the preparation of an antitumor drug or a proteasome inhibitor. Specifically, the present invention provides the boric acid derivative in preparing a proteasome chymotrypsin-like protease inhibitor drug. Uses, and in the prevention and/or treatment of cancer drugs such as multiple myeloma and colon cancer; clinical screening and / or preparation of proteasome inhibitor drugs and cancer drugs such as multiple myeloma and colon cancer Provides a new option.

Further, the compound (I) may also be one of the following compounds or a crystal form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof or a boric anhydride: .

It is apparent that various other modifications, substitutions and changes can be made in the form of the present invention in accordance with the present invention.

The above content of the present invention will be further described in detail below by way of specific embodiments in the form of embodiments. However, the scope of the above-mentioned subject matter of the present invention should not be construed as being limited to the following examples. Any technique implemented based on the above description of the present invention is within the scope of the present invention.

The trifluoroacetate or hydrochloride intermediate of the S2 amino boronate is commercially available, and other synthetic reagents are commercially available. The target compounds obtained in the examples were all controlled to have a purity of 98% or more.

Wherein S-1-1 is 2-chloro-5-methylbenzoic acid, S-2-1 is 2-bromo-5-methylbenzoic acid, and S-3-1 is 2-fluoro-5-methylbenzoic acid. , S-4-1 is 2-chloro-5-trifluoromethylbenzoic acid, S-5-1 is 2-fluoro-5-trifluoromethylbenzoic acid, and S-6-1 is 2, 5-di Methylbenzoic acid, S-7-1 is 2,5-ditrifluoromethylbenzoic acid, S-8-1 is 2-cyano-5-chlorobenzoic acid, and S-9-1 is 2-bromo- 5-cyanobenzoic acid. M2 is diethanolamine, M2-1 is N-methyldiethanolamine, M2-2 is N-butyldiethanolamine, M2-3 is triethanolamine, and M2-4 is N,N-bis(2-hydroxyethyl). Glycine, M3 is dipropanolamine, M3-1 is tripropanolamine, M4 is salicylic acid, M4-1 is 4-methylsalicylic acid, M5 is 4-hydroxyisophthalic acid, M5-1 is 2-hydroxyterephthalic acid, M6 is citric acid, and M7 is hydroxyguanamine hydrochloride.

Example 1 Preparation of the compound I-1-1 of the present invention and its mannitol ester:

(1) 3 g (17.6 mmol) of starting material (S-1-1) was dissolved in 20 mL of dichloromethane solution, and NMM (N-methylmorpholine) 4.44 g (44.0 mmol) was added, and the temperature was lowered. At a temperature of 5 ° C, 2.29 g (21.1 mmol) of ethyl chloroformate was added dropwise, and the reaction was completed.

(2) Dissolve 1.58 g (21.1 mmol) of glycine in 30 ml of saturated sodium carbonate solution, cool to an internal temperature of 5 ° C, and add the reaction droplets obtained in step (1) to a saturated sodium carbonate solution of glycine, and control the internal temperature change. After the dropwise addition was completed within ±2 ° C, stirring was continued for 3 hours at room temperature. The aqueous layer was taken, and the pH was adjusted to 2-3 with 15 ml of dilute hydrochloric acid (2 mol/ml). The solid was precipitated, suction filtered, and the solid was taken and dried in an oven at 55 ° C to obtain Intermediate S-1-2.

(3) Dissolve 3 g of intermediate S-1-2 (13.2 mmol) in 20 ml of dichloromethane solution, add 3.33 g (33.0 mmol) of NMM, cool to internal temperature 5 ° C, and add ethyl chloroformate 1.71 g (15.8 mmol), after complete reaction, the internal temperature was controlled at ± 2 ° C, 6.02 g of S2 (15.8 mmol) was added, stirred at room temperature for 3 hours, then quenched with ice water, dried and concentrated to give a pale yellow Solid target S-1-3.

In the above system, the ethyl chloroformate used in the steps (1) and (3) may be replaced by propyl chloroformate, butyl chloroformate or isobutyl ester, and the NMM may be replaced by triethylamine or N-ethyldiisopropylamine. Similar results can be obtained by repeating other organic bases, and the yields are all above 80%.

(4) After the intermediate S-1-3 is obtained, the hydrolysis reaction of the boric acid ester is carried out, and as shown in the above reaction scheme, 5.3 g of the intermediate S-1-3 (11.2 mmol) obtained in the step (3), methanol 40 is obtained. 5.5 mL of 1 N hydrochloric acid solution, 2.8 g (28.0 mmol) of isobutylboronic acid, 40 mL of n-hexane, and stirred at room temperature overnight, separating n-hexane, concentrating methanol under reduced pressure, adding 20 mL of water, 1 N Sodium hydroxide was neutralized and adjusted to pH 8-9, and 20 mL of dichloromethane was extracted in portions. The residual aqueous liquid was adjusted to pH 6 with 1 N hydrochloric acid solution, extracted twice with dichloromethane, and the organic layer was dried. Concentrated to dryness to give a pale-yellow solid; solids containing I-1-1 compound and formed trimer; further purification using methanol/water (1:19) mixed solids for 6 hours, filtration to obtain a solid, lyophilized Target white powder compound I-1-1.

¹ H NMR (300 MHz, DMSO-d6) δ (ppm): 8.70-8.77 (brs, 2H), 7.59-7.66 (m, 2H), 7.28-7.36 (m, 1H), 3.90-4.01 (m, 2H) ), 2.64 (m, 1H), 2.31 (m, 3H), 1.61 (m, 1H), 1.24-1.32 (m, 2H), 0.84 (m, 6H).

ESI m/z: 339.18 [MH] ^- .

0.1 g (0.29 mmol) of the above white powder was dispersed in 9 mL of tert-butanol, 15 mL of water, 0.9 g of D-mannitol (4.9 mmol) was added, and the mixture was warmly dissolved at 35 ° C, and lyophilized to obtain 0.88 g of white loose powder. I-1-1·20D-mannitol.

The compound I-1-1 was dispersed and dissolved in a quantitative dilute aqueous sodium hydroxide solution, and lyophilized to obtain a sodium salt of the compound I-1-1.

Example 2 Preparation of Compounds I-1-2, I-1-2-1, I-1-2-2, I-1-2-3, I-1-2-4 of the present invention

The boric acid starting material (I-1-1) 5 g (14.7 mmol), diethanolamine (M2, molecular weight 105.14) 1.58 g (15.0 mmol), 20 mL of ethyl acetate, and stirred at room temperature overnight, a white solid precipitated, filtered 4.8 g of compound I-1-2 were obtained in a yield of 79%, ie 2-chloro-5-methyl-[(R)-1-[1,3,7,2]-dioxaza-2-boron 3-methyl-butancarbonylamino]-methyl]-benzamide.

¹ H NMR (300 MHz, DMSO-d6) δ (ppm): 8.69 (brs, 1H), 7.35-7.39 (m, 2H), 7.25-7.29 (m, 1H), 6.95 (d, 1H, J = 4.71 Hz), 6.59 (m, 1H), 3.74-3.79 (m, 2H), 3.67 (m, 3H), 3.57 (m, 1H), 3.13 (m, 1H), 2.99 (m, 2H), 2.73-2.78 (m, 2H), 2.31 (m, 3H), 1.59 (m, 1H), 1.18-1.30 (m, 2H), 0.81 (m, 6H).

ESI m/z: 410.32 [M+H] ⁺ .

The mass spectrum of Compound I-1-2 is shown in Figure 1.

Similar to the synthesis of the I-1-2 compound, the boric acid starting material (I-1-1) was reacted with M2-1 N-methyldiethanolamine to give I-1-2-1.

Similar to the synthesis of the I-1-2 compound, the boric acid starting material (I-1-1) was reacted with M2-2 N-butyldiethanolamine to give 1-1-2-2.

Similar to the synthesis of the I-1-2 compound, the boric acid starting material (I-1-1) is reacted with M2-3 triethanolamine to give I-1-2-3.

Similar to the synthesis of the I-1-2 compound, the boric acid starting material (I-1-1) is reacted with M2-4 N,N-bis(2-hydroxyethyl)glycine to give I-1-2-4.

The mass spectrometry data of the above compounds are as follows:

Example 3 Preparation of Compounds I-1-3 and I-1-3-1 of the Invention

2.25 g (6.61 mmol) of boric acid starting material (I-1-1) was dissolved in 10 ml of ethyl acetate, and dipropanolamine (M3, molecular weight 133.19) 0.92 g (6.94 mmol) was added with stirring at room temperature, stirring was continued. After 2 hours, a color solid was precipitated and filtered to give the compound I-1-3 (2.05 g, yield 71%).

ESI m/z: 436.42 [MH] ^- .

Similar to the synthesis of the I-1-3 compound, the boric acid starting material (I-1-1) was reacted with M3-1 tripropanolamine to give I-1-3-1.

ESI m/z: 518.31 [M+Na] ⁺ .

Example 4 Preparation of Compounds I-1-4, I-1-4-1 of the Invention

2.25 g (6.61 mmol) of boric acid starting material (I-1-1) was dissolved in 10 ml of ethyl acetate, and salicylic acid (M4, molecular weight 138.12) 0.96 g (6.94 mmol) was added with stirring at room temperature, and stirred at room temperature. After overnight, a white solid precipitated, which was filtered to afford 2.22 g of the compound I-1-4.

¹ H NMR (300 MHz, DMSO-d6) δ (ppm): 10.91 (brs, 1H), 8.91-8.94 (m, 1H), 7.75-7.77 (m, 1H), 7.45-7.49 (m, 1H), 7.32-7.34(m, 1H), 7.22-7.26(m, 2H), 6.91-6.96(m, 2H), 4.24-4.25(m, 2H), 2.81-2.86(m, 1H), 2.26(m, 3H) ), 1.63-1.73 (m, 1H), 1.45 (m, 2H), 0.88-0.91 (d, 6H).

ESI m/z: 441.10 [MH] ^- .

Similar to the synthesis of I-1-4, 1-1-1 was reacted with M4-1 (4-methylsalicylic acid) to give I-1-4-1.

Its map data is as follows:

¹ H NMR (400 MHz, DMSO-d6) δ (ppm): 10.87 (brs, 1H), 8.90-8.93 (m, 1H), 7.55-7.56 (m, 1H), 7.33-7.35 (m, 1H), 7.22-7.29 (m, 3H), 6.79-6.81 (m, 1H), 4.23-4.24 (m, 2H), 2.80-2.83 (m, 1H), 2.25-2.26 (m, 6H), 1.62-1.72 (m , 1H), 1.44 (m, 2H), 0.87-0.91 (d, 6H).

ESI m/z: 479.2 [M+Na] ⁺ .

Similar to the synthesis of I-1-4, I-1-1 was reacted with M4-2 salicylic acid hydroxyindoleamine to give I-1-4-2.

Its map data is as follows:

¹ H NMR (400 MHz, DMSO-d6) δ (ppm): 10.89 (brs, 1H), 8.89-8.94 (m, 1H), 7.56-7.57 (m, 1H), 7.34-7.35 (m, 1H), 7.22-7.30 (m, 3H), 6.79-6.82 (m, 1H), 4.24-4.25 (m, 2H), 2.81-2.83 (m, 1H), 2.24-2.26 (m, 6H), 1.63-1.70 (m , 1H), 1.45 (m, 2H), 0.87-0.91 (d, 6H).

ESI m/z: 480.2 [M+Na] ⁺ .

Example 5 Preparation of Compounds I-1-5 and I-1-5-1 of the Invention

2.25 g (6.61 mmol) of boric acid starting material (I-1-1) was dissolved in 10 ml of methyl tert-butyl ether, and 4-hydroxyisophthalic acid (M5, molecular weight 182.13) 1.26 g was added with stirring at room temperature. 6.94 mmol), stirred at room temperature overnight, a white solid precipitated, which was filtered to afford 2.

¹ H NMR (300 MHz, DMSO-d6) δ (ppm): 12.78 (brs, 1H), 11.03 (brs, 1H), 8.93-8.96 (m, 1H), 8.37 (m, 1H), 8.00-8.03 ( m, 1H), 7.33-7.35 (m, 1H), 7.20-7.25 (m, 2H), 6.99-7.01 (m, 1H), 4.25-4.27 (m, 2H), 2.84-2.93 (m, 1H), 2.25 (m, 3H), 1.63-1.72 (m, 1H), 1.46-1.48 (m, 2H), 0.88-0.91 (d, 6H).

ESI m/z: 487.27 [M+H] ⁺ .

Similar to the preparation method of I-1-5, I-1-1 was reacted with M5-1 to obtain I-1-5-1.

Its map data is as follows:

ESI m/z: 509.34 [M+Na] ⁺ .

Example 6 Preparation of Compounds I-1-6 and I-1-6-1 of the Invention

2.25 g (6.61 mmol) of boric acid starting material (I-1-1) was dissolved in 10 ml of ethyl acetate, and stirred at room temperature for 5 minutes, then anhydrous citric acid (M6, molecular weight 192.14) 1.33 g (6.94 mmol) was added. After the mixing, stirring was continued for 2 hours to precipitate a white solid, which was filtered to give 2.

¹ H NMR (400 MHz, DMSO-d6) δ (ppm): 12.09 (brs, 2H), 10.66 (brs, 1H), 8.89-8.91 (m, 1H), 7.35-7.38 (m, 2H), 7.27- 7.29 (m, 1H), 4.24 - 4.25 (m, 2H), 2.74 - 2.88 (m, 2H), 2.54-2.6 (m, 3H), 2.31 (m, 3H), 1.67 (m, 1H), 1.22- 1.29 (m, 2H), 0.86-0.87 (d, 6H).

ESI m/z: 497.04 [M+H] ⁺ .

2.25 g (6.61 mmol) of a boric acid starting material (I-1-1) was dissolved in 45 ml of ethyl acetate, and the mixture was heated to reflux at an external temperature of 80 ° C, and 1.33 g (6.94 mmol) of anhydrous citric acid was added. After mixing, stirring was continued for 2 hours, and the temperature was gradually lowered (control was lowered by 1 degree every 3 minutes). After room temperature, the precipitated solid I-1-3-1 was obtained by suction filtration, and the compound was obtained after purification to obtain the compound 2.10 g, yield 64%. . After X-ray diffraction, it is the following structure: I-1-6-1

ESI m/z: 497.04 [M+H] ⁺ .

Example 7 Preparation of Compound I-2-1 and Its Mannitol Ester of the Present Invention

Process for preparing target compound I-2-1 from S-2-1 The method for preparing compound I-1-1 from S-1-1 in Example 1, compound I-2-1 mannitol ester and compound The preparation method of the sodium salt of I-2-1 was similar to that of Example 1.

ESI m/z: 383.21 [MH] ^- .

Example 8 Preparation of Compound I-2-2 of the Invention

2.25 g (5.84 mmol) of boric acid starting material (I-2-1) was dissolved in 45 mL of ethyl acetate, and stirred at room temperature for 5 minutes, then diethanolamine (M2, molecular weight 105.14) 0.64 g (6.14 mmol) was added dropwise. A white solid precipitated in the reaction liquid during the dropwise addition. After completion of the dropwise addition, stirring was continued for 2 hours, and 2.12 g of an I-2-2 compound was obtained by filtration, yield 83%.

¹ H NMR (300 MHz, DMSO-d6) δ (ppm) 8.66 (brs, 1H), 7.51-7.53 (m, 1H), 7.18-7.24 (m, 2H), 6.93 (m, 1H), 6.55 (m) , 1H), 3.76 (m, 2H), 3.67 (m, 3H), 3.57 (m, 1H), 3.13 (m, 1H), 2.92 (m, 2H), 2.73 (m, 2H), 2.29 (m, 3H), 1.59 (m, 1H), 1.18-1.31 (m, 2H), 0.81 (m, 6H).

ESI m/z: 454.2 [M+H] ⁺ .

Example 9 Preparation of Compound I-2-3 of the Invention

The method for producing the target compound I-2-3 from I-2-1 of the present invention is the same as the method for preparing the compound I-1-3 in the same procedure as in the first embodiment.

ESI m/z: 482.23 [M+H] ⁺ .

Example 10 Preparation of Compound I-2-4 of the Invention

The method of the present invention for preparing the target compound I-2-4 from I-2-1 is the same as the method for preparing the compound I-1-4 from the I-1-1 of the fourth embodiment.

ESI m/z: 485.10 [MH] ^- .

Example 11 Preparation of Compounds I-2-5 and I-2-5-1 of the Invention

The process for producing the target compound I-2-5 from I-2-1 of the present invention is the same as the method for preparing the compound I-1-5 from the I-1-1 in the same.

ESI m/z: 553.14 [M+Na] ⁺ .

I-2-5-1 can be obtained as above.

ESI m/z: 553.14 [M+Na] ⁺ .

Example 12 Preparation of Compounds I-2-6, I-2-6-1 of the Invention

2.25 g (5.84 mmol) of the boric acid starting material (I-2-1) was dissolved in 45 mL of ethyl acetate, and stirred at room temperature for 5 minutes, and then anhydrous citric acid (M6, molecular weight 192.14) 1.18 g (6.14 mmol) was added. After the mixture was stirred for 2 hours, a white solid was precipitated, and then filtered, to give 2.

ESI m/z: 539.08 [MH] ^- .

Similar to the reaction conditions of Example 6, the compound I-2-6-1 was obtained: I-2-6-1

ESI m/z: 539.08 [MH] ^- .

Example 13 Preparation of Compound I-3-1 of the Invention and Its Mannitol Ester

Process for preparing target compound I-3-1 from S-3-1 The method for preparing compound I-1-1 from S-1-1 in Example 1, compound I-3-1 mannitol ester and compound The preparation method of the sodium salt of I-3-1 was similar to that of Example 1.

¹ H NMR (300 MHz, DMSO-d6) δ (ppm): 8.77 (brs, 1H), 8.50 (brs, 1H), 7.56-7.57 (m, 1H), 7.35 (m, 1H), 7.15-7.22 ( m, 1H), 4.04 (m, 2H), 2.50-2.60 (m, 1H), 2.32 (m, 3H), 1.59 (m, 1H), 1.17-1.30 (m, 2H), 0.79-0.85 (d, 6H).

ESI m/z: 323.07 [MH] ^- .

Example 14 Preparation of the compounds I-3-2, I-3-2-1, I-3-2-2, I-3-2-3, I-3-2-4 of the present invention

2.25 g (6.94 mmol) of boric acid starting material (I-3-1) was dissolved in 45 mL of ethyl acetate, and stirred at room temperature for 5 minutes, then diethanolamine (M2, molecular weight 105.14) 0.77 g (7.29 mmol) was added dropwise. A white solid precipitated in the reaction liquid during the dropwise addition. After completion of the dropwise addition, stirring was continued for 2 hours, and 2.17 g of an I-3-2 compound was obtained by filtration, yield 80%.

¹ H NMR (300 MHz, DMSO-d6) δ (ppm): 8.42 (brs, 1H), 7.47-7.48 (m, 1H), 7.35 (m, 1H), 7.16-7.22 (m, 1H), 7.01 ( d, 1H, J=7.02Hz), 6.59 (m, 1H), 3.82 (m, 2H), 3.67 (m, 3H), 3.57 (m, 1H), 3.12 (m, 1H), 2.97 (m, 2H) ), 2.73 - 2.78 (m, 2H), 2.32 (m, 3H), 1.57 (m, 1H), 1.18-1.30 (m, 2H), 0.80 (m, 6H).

ESI m/z: 394.36 [M+H] ⁺ .

The mass spectrum of the compound I-3-2 is shown in Fig. 2.

Similar to the preparation method of I-3-2, I-3-1 was prepared with different starting materials to obtain I-3-2-1 , I-3-2-2 , I-3-2-3 , I-3-. 2-4 .

The mass spectrometry data of the above compounds are as follows:

Example 15 Preparation of Compounds I-3-3, I-3-3-1 of the Invention

The process for producing the target compound I-3-3 from I-3-1 of the present invention is the same as the method for preparing the compound I-1-3 from the I-1-1 in the third embodiment.

ESI m/z: 422.18 [M+H] ⁺ .

Similar to the synthesis of the I-3-3 compound, the boronic acid starting material (I-3-1) was reacted with M3-1 tripropanolamine to give I-3-3-1.

The mass spectrum data is as follows:

ESI m/z: 502.33 [M+Na] ⁺ .

Example 16 Preparation of Compounds I-3-4, I-3-4-1 of the Invention

The process for producing the target compound I-3-4 from I-3-1 of the present invention is the same as the method for preparing the compound I-1-4 from the I-1-1 in the fourth embodiment.

¹ H NMR (400 MHz, DMSO-d6) δ (ppm): 10.84 (brs, 1H), 8.64-8.68 (m, 1H), 7.74-7.76 (m, 1H), 7.52-7.54 (m, 1H), 7.45-7.49 (m, 1H), 7.34-7.38 (m, 1H), 7.16-20 (m, 1H), 6.90-6.96 (m, 2H), 4.26-4.27 (m, 2H), 2.76-2.81 (m) , 1H), 2.31 (m, 3H), 1.60-1.70 (m, 1H), 1.42 (m, 2H), 0.85-0.89 (d, 6H).

ESI m/z: 427.46 [MH] ^- .

Similar to the synthesis of I-3-4, I-3-1 was reacted with M4-1 4-methylsalicylic acid to give I-3-4-1.

Its map data is as follows:

¹ H NMR (400 MHz, DMSO-d6) δ (ppm): 10.81 (brs, 1H), 8.63-8.67 (m, 1H), 7.52-7.54 (m, 2H), 7.34-7.38 (m, 1H), 7.26-7.28(m, 1H), 7.16-7.20(m, 1H), 6.80-6.82(m, 1H), 4.26-4.27(m, 2H), 2.77-2.79(m, 1H), 2.31(m, 3H) ), 2.45 (m, 3H), 1.59-1.69 (m, 1H), 1.41-1.42 (m, 2H), 0.85-0.89 (d, 6H).

ESI m/z: 463.28 [M+Na] ⁺ .

Example 17 Preparation of Compounds I-3-5 and I-3-5-1 of the Invention

The method of the present invention for preparing the target compound I-3-5 from I-3-1 is the same as the method for preparing the compound I-1-5 in the same manner as in the formula I-1-1.

¹ H NMR (400 MHz, DMSO-d6) δ (ppm): 12.77 (brs, 1H), 10.97 (brs, 1H), 8.67-8.68 (m, 1H), 8.36 (m, 1H), 8.01-8.03 ( m, 1H), 7.52 (m, 2H), 7.36 (m, 1H), 7.16-7.21 (m, 1H), 7.00-7.02 (m, 1H), 4.29-4.30 (m, 2H), 2.79-2.88 ( m, 1H), 2.31 (m, 3H), 1.63-1.64 (m, 1H), 1.41-1.45 (m, 2H), 0.86-0.89 (d, 6H).

ESI m/z: 493.17 [M+Na] ⁺ .

Similar to the preparation method of I-3-5, I-3-1 was reacted with M5-1 to obtain I-3-5-1.

Its map data is as follows:

ESI m/z: 493.17 [M+Na] ⁺ .

Example 18 Preparation of Compounds I-3-6, I-3-6-1 of the Invention

2.25 g (6.94 mmol) of the boric acid starting material (I-3-1) was dissolved in 45 ml of ethyl acetate, and stirred at room temperature for 5 minutes, then anhydrous citric acid (M6, molecular weight 192.14) 1.40 g (7.29 mmol) was added. After the mixture was stirred for 2 hours, a white solid was precipitated, and then filtered, to give the compound I.

¹ H NMR (400 MHz, DMSO-d6) δ (ppm): 12.09 (brs, 2H), 10.66 (brs, 1H), 8.89-8.91 (m, 1H), 7.35-7.38 (m, 2H), 7.27- 7.29 (m, 1H), 4.24 - 4.25 (m, 2H), 2.74 - 2.88 (m, 2H), 2.54-2.6 (m, 3H), 2.31 (m, 3H), 1.67 (m, 1H), 1.22- 1.29 (m, 2H), 0.86-0.87 (d, 6H).

ESI m/z: 503.33 [M+Na] ⁺ .

Similar to the reaction conditions of Example 6, the compound I-3-6-1 was obtained: I-3-6-1

ESI m/z: 503.33 [M+Na] ⁺ .

Example 19 Preparation of Compound I-4-1 of the Invention and Its Mannitol Ester

The method for preparing the target compound I-4-1 from S-4-1, the method for preparing the compound I-1-1 from the S-1-1 in the first embodiment, the compound I-4-1 mannitol ester and the compound The preparation method of the sodium salt of I-4-1 is similar to that of Example 1.

¹ H NMR (300 MHz, DMSO-d6) δ (ppm): 9.08 (brs, 1H) 8.79 (brs, 1H), 7.93 (m, 1H), 7.84 (m, 1H), 7.79 (m, 1H), 4.06 (m, 2H), 2.65 (m, 1H), 1.70, 1H), 1.48, 2H), 0.84 (d, 6H).

ESI m/z: 393.02 [MH] ^- .

Example 20 Preparation of Compounds I-4-2, I-4-2-1, I-4-2-2, I-4-2-3, I-4-2-4 of the Invention

2.25 g (5.70 mmol) of a boric acid starting material (I-4-1) was dissolved in 45 ml of ethyl acetate, and the mixture was stirred at room temperature for 5 minutes, and then diethylamineamine 0.63 g (5.99 mmol) was added dropwise. After the completion of the dropwise addition, stirring was continued for 2 hours to precipitate a white solid, which was filtered to yield 2.20 g of the compound I.

¹ H NMR (300 MHz, DMSO-d6) δ (ppm): 8.95 (brs, 1H), 7.80 (m, 3H), 7.05 (m, 1H), 6.61 (m, 1H), 3.83 (m, 2H) , 3.58-3.68 (m, 3H), 3.35 (m, 1H), 3.13 (m, 1H), 3.00 (m, 2H), 2.74 (m, 2H), 1.59 (m, 1H), 1.17-1.32 (m , 2H), 0.81 (m, 6H).

ESI m/z: 464.31 [M+H] ⁺ .

Figure 3 is a mass spectrum of compound I-4-2.

Similar to the preparation method of I-4-2, I-4-1 was prepared with different raw materials to obtain I-4-2-1 , I-4-2-2 , I-4-2-3 , I-4-. 2-4 .

The above compound spectrum information is as follows:

Nuclear magnetic data

I-4-2-1: ¹ H NMR (400 MHz, DMSO-d6) δ (ppm): 9.00-9.03 (m, 1H), 7.84-7.86 (m, 1H), 7.76-7.80 (m, 2H) , 6.51-6.53 (d, 1H, J=10Hz), 4.30 (m, 1H), 3.62-3.81 (m, 4H), 3.42-3.46 (m, 2H), 3.14-3.22 (m, 2H), 2.60 ( m, 3H), 2.42 - 2.45 (m, 2H), 1.53 (m, 1H), 1.14-1.27 (m, 2H), 0.83-0.85 (d, 6H).

I-4-2-3 : ¹ H NMR (400 MHz, DMSO-d6) δ (ppm): 9.03-9.05 (m, 1H), 7.77-787 (m, 3H), 6.51-6.53 (d, 1H, J = 10 Hz), 4.87 (m, 1H), 4.31 (m, 2H), 3.72-3.82 (m, 4H), 2.89-3.43 (m, 7H), 2.54-2.57 (m, 2H), 1.53 (m, 1H), 1.20 - 1.25 (m, 2H), 0.80 - 0.86 (d, 6H).

Example 21 Preparation of Compounds I-4-3 and I-4-3-1 of the Invention

The method for producing the target compound I-4-3 from I-4-1 of the present invention is the same as the method for preparing the compound I-1-3 in the same procedure as in Example I.

ESI m/z: 490.26 [MH] ^- .

Similar to the preparation method of I-4-3, I-4-3-1 was obtained.

The compound information is as follows:

¹ H NMR (400 MHz, DMSO-d6) δ (ppm): 8.97 (m, 1H), 7.78-786 (m, 3H), 6.64 (d, 1H, J = 7.2 Hz), 4.76-4.78 (m, 1H), 3.20-3.98 (m, 11H), 2.66-2.69 (m, 4H), 1.78 (m, 1H), 1.40-1.74 (m, 5H), 1.28-1.32 (m, 1H), 1.17-1.21 ( m, 1H), 0.91-1.0 (m, 1H), 0.80-0.86 (d, 6H).

ESI m/z: 572.23 [M+Na] ⁺ .

Example 22 Preparation of Compounds I-4-4, I-4-4-1, I-4-4-2 of the Invention

The method of the present invention for preparing the target compound I-4-4 from I-4-1 is the same as the method for preparing the compound I-1-4 from the I-1-1 of the fourth embodiment.

¹ H NMR (40 MHz, DMSO-d6) δ (ppm): 11.04 (brs, 1H), 9.23-9.26 (m, 1H), 7.73-7.85 (m, 4H), 7.45-7.49 (m, 1H), 6.90-6.97(m, 2H), 4.28-4.32(m, 2H), 2.83-2.88(m, 1H), 1.65-1.75(m, 1H), 1.48(m, 2H), 0.89-0.92(d, 6H ).

ESI m/z: 518.98 [M+Na] ⁺ .

Similar to the synthesis of I-4-4, I-4-1 was reacted with M4-1 4-methylsalicylic acid to give I-4-4-1.

Its map data is as follows:

¹ H NMR (40 MHz, DMSO-d6) δ (ppm): 10.88 (brs, 1H), 8.91 - 8.94 (m, 1H), 7.55 (s, 1H), 7.35 (m, 1H), 7.22-7.29 ( m, 3H), 6.79-6.81 (m, 2H), 4.23-4.24 (m, 2H), 2.80-2.83 (m, 1H), 2.25 (s, 3H), 1.66-1.73 (m, 1H), 1.40- 1.44 (m, 2H), 0.89-0.92 (d, 6H).

ESI m/z: 533.12 [M+Na] ⁺ .

Similar to the synthesis of I-4-4, I-4-1 was reacted with M4-2 hydroxyindoleamine salicylate to give I-4-4-2.

Its map data is as follows:

¹ H NMR (400 MHz, DMSO-d6) δ (ppm): 10.89 (brs, 1H), 8.90-8.94 (m, 1H), 7.57 (s, 1H), 7.31-7.35 (m, 1H), 7.23 7.30 (m, 3H), 6.79-6.81 (m, 2H), 4.22-4.25 (m, 2H), 2.80-2.83 (m, 1H), 1.64-1.69 (m, 1H), 1.46 (m, 2H), 0.87-0.91 (d, 6H).

ESI m/z: 534.22 [M+Na] ⁺ .

Example 23 Preparation of Compounds I-4-5, I-4-5-1 of the Invention

The method for producing the target compound I-4-5 from I-4-1 of the present invention is the same as the method for preparing the compound 1-1-5 in the same manner as in the formula I-1-1.

¹ H NMR (300 MHz, DMSO-d6) δ (ppm): 12.70 (brs, 1H), 11.08 (brs, 1H), 9.21-9.24 (m, 1H), 8.36-8.37 (m, 1H), 8.00- 8.02 (m, 1H), 7.82-7.84 (m, 2H), 7.45-7.49 (m, 1H), 6.90-6.97 (m, 2H), 4.28-4.32 (m, 2H), 2.83-2.88 (m, 1H) ), 1.65-1.75 (m, 1H), 1.48 (m, 2H), 0.89-0.92 (d, 6H).

ESI m/z: 563.07 [M+Na] ⁺ .

Similar to the preparation method of I-4-5, I-4-1 was reacted with M5-1 to obtain I-4-5-1.

Its map data is as follows:

ESI m/z: 563.07 [M+Na] ⁺ .

Example 24 Preparation of Compounds I-4-6, I-4-6-1 of the Invention

2.25 g (5.70 mmol) of the boric acid starting material (I-4-1) was dissolved in 45 ml of ethyl acetate, and stirred at room temperature for 5 minutes, then anhydrous citric acid (M6, molecular weight 192.14) 1.15 g (5.99 mmol) was added. After the mixing, stirring was continued for 2 hours to precipitate a white solid, which was filtered, and then evaporated.

¹ H NMR (400 MHz, DMSO-d6) δ (ppm): ¹ H NMR (400 MHz, DMSO-d6) δ (ppm): 12.09 (brs, 2H), 10.66 (brs, 1H), 8.89-8.91 ( m, 1H), 7.35-7.38 (m, 2H), 7.27-7.29 (m, 1H), 4.24-4.25 (m, 2H), 2.74-2.88 (m, 2H), 2.54-2.6 (m, 3H), 1.67 (m, 1H), 1.22-1.29 (m, 2H), 0.86-0.87 (d, 6H).

ESI m/z: 573.16 [M+Na] ⁺ .

Similar to the reaction conditions of Example 6, the compound I-4-6-1 was obtained: I-4-6-1

ESI m/z: 573.16 [M+Na] ⁺ .

Example 25 Preparation of Compound I-5-1 of the Invention and Its Mannitol Ester

Process for preparing target compound I-5-1 from S-5-1 of the present invention, process for preparing compound I-1-1 with S-1-1 of Example 1, compound I-5-1 mannitol ester and compound The preparation method of the sodium salt of I-5-1 was similar to that of Example 1.

ESI m/z: 377.14 [MH] ^- .

Example 26 Preparation of Compounds I-5-2, I-5-2-1, I-5-2-2, I-5-2-3, I-5-2-4 of the present invention

2.25 g (5.95 mmol) of a boric acid starting material (I-5-1) was dissolved in 45 ml of ethyl acetate, and the mixture was stirred at room temperature for 5 minutes, and then diethanolamine 0.66 g (6.25 mmol) was added dropwise. After the completion of the dropwise addition, stirring was continued for 2 hours, and filtered to give a white solid, 2.20 g, Compound I-5-2, yield 83%.

¹ H NMR (300 MHz, DMSO-d6) δ (ppm) 8.78 (brs, 1H), 7.99 (m, 2H), 7.61 (m, 1H), 7.14 (m, 1H), 6.67 (m, 1H), 3.86(m, 2H), 3.68(m, 3H), 3.35(m, 1H), 3.13(m, 1H), 2.98(m, 2H), 2.75(m, 1H), 1.59(m, 1H), 1.19 -1.32 (m, 2H), 0.80 (m, 6H).

ESI m/z: 448.28 [M+H] ⁺ .

Figure 4 is a mass spectrum of Compound I-5-2.

Similar to the preparation method of I-5-2, I-5-1 and different raw materials were prepared to obtain I-5-2-1 , I-5-2-2 , I-5-2-3 , I-5- 2-4 .

The above compound spectrum information is as follows:

Example 27 Preparation of Compounds I-5-3, I-5-3-1 of the Invention

The method of the present invention for producing the target compound I-5-3 from I-5-1 is the same as the method for preparing the compound I-1-3 of the formula I-1-1 in Example 3.

ESI m/z: 474.13 [MH] ^- .

Similar to the preparation method of I-5-3, I-5-3-1 was obtained.

The mass spectrum of the compound is as follows:

ESI m/z: 556.31 [M+Na] ⁺ .

Example 28 Preparation of Compound I-5-4 of the Invention

The process for producing the target compound I-5-4 from I-5-1 of the present invention is the same as the method for preparing the compound I-1-4 from the I-1-1 of the fourth embodiment.

ESI m/z: 478.87 [MH] ^- .

Similarly, compound I-5-4-1 was obtained.

ESI m/z: 517.25 [M+Na] ⁺ .

Example 29 Preparation of Compounds I-5-5 and I-5-5-1 of the Invention

The method of the present invention for preparing the target compound I-5-5 from I-5-1 is the same as the method for preparing the compound 1-1-5 of the formula I-1-1.

ESI m/z: 548.16 [M+Na] ⁺ .

Similar to the preparation method of I-5-5, I-5-1 was reacted with M5-1 to obtain I-5-5-1.

Its map data is as follows:

ESI m/z: 548.16 [M+Na] ⁺ .

Example 30 Preparation of Compounds I-5-6, I-5-6-1 of the Invention

2.25 g (5.95 mmol) of boric acid starting material (I-5-1) was dissolved in 45 ml of ethyl acetate, and stirred at room temperature for 5 minutes, then anhydrous citric acid (M6, molecular weight 192.14) 1.20 g (6.25 mmol) was added. After the mixture was stirred for 2 hours, a white solid was precipitated, and then filtered to give 2.35 g of I-5-6 compound (yield: 74%).

ESI m/z: 557.03 [M+Na] ⁺ .

Similar to the reaction conditions of Example 6, the compound I-5-6-1 was obtained: I-5-6-1

ESI m/z: 557.03 [M+Na] ⁺ .

Example 31 Preparation of Compound I-6-1 of the Invention

The method for preparing the target compound I-6-1 from S-6-1, the method for preparing the compound I-1-1 from the S-1-1 in the first embodiment, the compound I-6-1 mannitol ester and the compound The preparation method of the sodium salt of I-6-1 is similar to that of Example 1.

ESI m/z: 319.07 [MH] ^- .

Example 32 Preparation of Compounds I-6-2, I-62-1, I-6-2-2, I-6-2-3, I-6-2-4 of the present invention

2.25 g (7.03 mmol) of a boric acid starting material (I-6-1) was dissolved in 45 ml of ethyl acetate, and the mixture was stirred at room temperature for 5 minutes, and then 0.77 g (7.38 mmol) of diethanolamine was added dropwise. After the completion of the dropwise addition, stirring was continued for 2 hours, and filtered to give a white solid, 2.27 g, Compound I-6-2, yield 83%.

ESI m/z: 390.25 [M+H] ⁺ .

Similar to the preparation method of I-6-2, I-6-1 and different raw materials were prepared to obtain I-6-2-1 , I-6-2-2 , I-6-2-3 , I-6- 2-4 .

The above compound spectrum information is as follows:

Example 33 Preparation of Compound I-6-3 of the Invention

The process for producing the target compound I-6-3 from I-6-1 of the present invention is the same as the method for preparing the compound I-1-3 from the I-1-1 in Example 3.

ESI m/z: 416.21 [MH] ^- .

Example 34 Preparation of Compound I-6-4 of the Invention

The method of the present invention for preparing the target compound I-6-4 from I-6-1 is the same as the method for preparing the compound I-1-4 from the I-1-1 of the fourth embodiment.

ESI m/z: 421.09 [MH] ^- .

Example 35 Preparation of Compound I-6-5 of the Invention

The method of the present invention for preparing the target compound I-6-5 from I-6-1 is the same as the method for preparing the compound 1-1-5 of the formula I-1-1 in Example 5.

ESI m/z: 489.03 [M+Na] ⁺ .

Example 36 Preparation of Compounds I-6-6, I-6-6-1 of the Invention

2.25 g (7.03 mmol) of the boric acid starting material (I-6-1) was dissolved in 45 ml of ethyl acetate, and stirred at room temperature for 5 minutes, and then anhydrous citric acid (M6, molecular weight 192.14) 1.41 g (7.38 mmol) was added. After the mixing, stirring was continued for 2 hours to precipitate a white solid, which was filtered under suction to yield 2.4 g of I-6-6 compound (yield: 72%).

ESI m/z: 499.20 [M+Na] ⁺ .

Similar to the reaction conditions of Example 6, the compound I-6-6-1 was obtained:

ESI m/z: 499.20 [M+Na] ⁺ .

Example 37 Preparation of Compound I-7-1 of the Invention

Process for preparing target compound I-7-1 from S-7-1 of the present invention, process for preparing compound I-1-1 with S-1-1 of Example 1, compound I-7-1 mannitol ester and compound The preparation method of the sodium salt of I-7-1 is similar to that of Example 1.

ESI m/z: 427.06 [MH] ^- .

Example 38 Preparation of Compounds I-7-2, I-7-2-1, I-7-2-2, I-7-2-3, I-7-2-4 of the present invention

2.25 g (5.25 mmol) of a boric acid starting material (I-7-1) was dissolved in 45 ml of ethyl acetate, and the mixture was stirred at room temperature for 5 minutes, and then, then, then,,,,,,,,,,,,,,,,, After completion of the dropwise addition, stirring was continued for 2 hours, and suction filtration gave a white solid, 2.09 g, Compound I-7-2, yield 80%.

ESI m/z: 498.39 [M+H] ⁺ .

The method of preparation is similar to I-7-2, I-7-1 to prepare different starting materials obtained with I-7-2-1, I-7-2-2, I-7-2-3, I-7- 2-4 .

The above compound spectrum information is as follows:

Example 39 Preparation of Compound I-7-3 of the Invention

The process for preparing the target compound I-7-3 from I-7-1 of the present invention is the same as the method for preparing the compound I-1-3 from the I-1-1 in the third embodiment.

ESI m/z: 524.10 [MH] ^- .

Example 40 Preparation of Compound I-7-4 of the Invention

The method of the present invention for preparing the target compound I-7-4 from I-7-1 is the same as the method for preparing the compound I-1-4 from the I-1-1 of the fourth embodiment.

ESI m/z: 529.11 [MH] ^- .

Example 41 Preparation of Compound I-7-5 of the Invention

The process for producing the target compound I-7-5 from I-7-1 of the present invention is the same as the method for preparing the compound I-1-5 in the same manner as in the formula I-1-1.

ESI m/z: 596.91 [M+Na] ⁺ .

Example 42 Preparation of Compounds I-7-6, I-7-6-1 of the Invention

2.25 g (5.25 mmol) of the boric acid starting material (I-7-1) was dissolved in 45 ml of ethyl acetate, and stirred at room temperature for 5 minutes, then anhydrous citric acid (M6, molecular weight 192.14) 1.06 g (5.52 mmol) was added. After the mixture was stirred for 2 hours, a white solid was precipitated, and then filtered to give the compound I-7-6 2.28 g, yield 74%.

ESI m/z: 607.10 [M+Na] ⁺ .

Similar to the reaction conditions of Example 6, the compound I-7-6-1 was obtained:

ESI m/z: 607.10 [M+Na] ⁺ .

Example 43 Preparation of Compound I-8-1 of the Invention

Process for preparing target compound I-8-1 from S-8-1 of the present invention, process for preparing compound I-1-1 with S-1-1 of Example 1, compound I-8-1 mannitol ester and compound The preparation method of the sodium salt of I-8-1 was similar to that of Example 1.

ESI m/z: 350.12 [MH] ^- .

Example 44 Preparation of Compounds I-8-2, I-8-2-1, I-8-2-2, I-8-2-3, I-8-2-4 of the Invention

2.25 g (5.25 mmol) of the boric acid starting material (I-8-1) was dissolved in 45 ml of ethyl acetate, and the mixture was stirred at room temperature for 5 minutes, and then 0.5 g (5.52 mmol) of diethanolamine was added dropwise. After the completion of the dropwise addition, stirring was continued for 2 hours, and suction filtration gave a white solid, 2.09 g, Compound I-8-2, yield 80%.

ESI m/z: 419.14 [MH] ^- .

Similar to the preparation method of I-8-2, I-8-1 and different raw materials were prepared to obtain I-8-2-1 , I-8-2-2 , I-8-2-3 , I-8- 2-4 .

The above compound spectrum information is as follows:

Example 45 Preparation of Compounds I-8-3, I-8-3-1 of the Invention

The process for producing the target compound I-8-3 from I-8-1 of the present invention is the same as the method for preparing the compound I-1-3 from the I-1-1 of the third embodiment.

ESI m/z: 447.11 [MH] ^- .

Similar to the preparation method of I-8-3, I-8-3-1 was obtained.

The mass spectrum of the compound is as follows:

ESI m/z: 529.25 [M+Na] ⁺ .

Example 46 Preparation of Compound I-8-4 of the Invention

The process for preparing the target compound I-8-4 from I-8-1 of the present invention is the same as the method for preparing the compound I-1-4 from the I-1-1 in the fourth embodiment.

ESI m/z: 452.09 [MH] ^- .

Example 47 Preparation of Compounds I-8-5, I-8-5-1 of the Invention

The process for producing the target compound I-8-5 from I-8-1 of the present invention is the same as the method for preparing the compound I-1-5 from the I-1-1 of the above.

ESI m/z: 520.11 [M+Na] ⁺ .

Similar to the preparation method of I-8-5, I-8-1 was reacted with M5-1 to obtain I-8-5-1.

Its map data is as follows:

ESI m/z: 520.11 [M+Na] ⁺ .

Example 48 Preparation of Compounds I-8-6, I-8-6-1 of the Invention

2.25 g (5.25 mmol) of boric acid starting material (I-8-1) was dissolved in 45 ml of ethyl acetate, and stirred at room temperature for 5 minutes, then anhydrous citric acid (M6, molecular weight 192.14) 1.06 g (5.52 mmol) was added. After the mixing, stirring was continued for 2 hours to precipitate a white solid, which was filtered, and then filtered to give the compound (yield:

ESI m/z: 530.06 [M+Na] ⁺ .

Similar to the reaction conditions of Example 6, the compound I-8-6-1 was obtained:

ESI m/z: 530.06 [M+Na] ⁺ .

Example 49 Preparation of Compound I-9-1 of the Invention

Process for preparing target compound I-9-1 from S-9-1 of the present invention, process for preparing compound I-1-1 with S-1-1 of Example 1, compound I-9-1 mannitol ester and compound The preparation method of the sodium salt of I-9-1 is similar to that of Example 1.

ESI m/z: 393.91 [MH] ^- .

Example 50 Preparation of Compounds I-9-2, I-9-2-1, I-9-2-2, I-9-2-3, I-9-2-4 of the Invention

2.25 g (5.25 mmol) of the boric acid starting material (I-9-1) was dissolved in 45 ml of ethyl acetate, and the mixture was stirred at room temperature for 5 min. After the completion of the dropwise addition, stirring was continued for 2 hours, and suction filtration was performed to obtain a white solid, 2.09 g, Compound I-9-2, yield 80%.

ESI m/z: 463.23 [MH] ^- .

Similar to the preparation method of I-9-2, I-9-1 and different raw materials were prepared to obtain I-9-2-1 , I-9-2-2 , I-9-2-3 , I-9- 2-4 .

The above compound spectrum information is as follows:

Example 51 Preparation of Compounds I-9-3, I-9-3-1 of the Invention

The process for producing the target compound I-9-3 from I-9-1 of the present invention is the same as the method for preparing the compound I-1-3 from the I-1-1 of the third embodiment.

ESI m/z: 491.06 [MH] ^- .

Similar to the preparation method of I-9-3, I-9-3-1 was obtained.

The mass spectrum of the compound is as follows:

ESI m/z: 573.20 [M+Na] ⁺ .

Example 52 Preparation of Compounds I-9-4, I-9-4-1 of the Invention

The process for preparing the target compound I-9-4 from I-9-1 of the present invention is the same as the method for preparing the compound I-1-4 from the I-1-1 in the fourth embodiment.

ESI m/z: 496.02 [MH] ^- .

Similar to the synthesis of I-9-4, I-9-1 was reacted with M4-1 4-methylsalicylic acid to give I-9-4-1.

Its map data is as follows:

534.23[M+Na] ⁺ .

Example 53 Preparation of Compounds I-9-5, I-9-5-1 of the Invention

The method of the present invention for preparing the target compound I-9-5 from I-9-1 is the same as the method for preparing the compound 1-1-5 of the formula I-1-1 in the same manner.

ESI m/z: 564.03 [M+Na] ⁺ .

Similar to the preparation method of I-9-5, I-9-1 was reacted with M5-1 to obtain I-9-5-1.

Its map data is as follows:

ESI m/z: 564.03 [M+Na] ⁺ .

Example 54 Preparation of Compounds I-9-6, I-9-6-1 of the Invention

2.25 g (5.25 mmol) of boric acid starting material (I-9-1) was dissolved in 45 ml of ethyl acetate, and stirred at room temperature for 5 minutes, then anhydrous citric acid (M6, molecular weight 192.14) 1.06 g (5.52 mmol) was added. After the mixture was stirred for 2 hours, a white solid was precipitated, and filtered to give a compound (yield: 74%).

ESI m/z: 574.18 [M+Na] ⁺ .

Similar to the reaction conditions of Example 6, the compound I-9-6-1 was obtained:

ESI m/z: 574.18 [M+Na] ⁺ .

Example 55 Medicinal Capsule Composition of the Compound of the Invention

Medicinal capsule composition of compound I-1-2, containing 3 g or 4 g of compound I-1-2, 193 g or 192 g of microcrystalline cellulose, 4 g of micronized gum, a total of 200 g and 2 hollow capsule. The preparation method is:

The compound I-1-2, microcrystalline cellulose and micronized rubber were mixed by a conventional method; the mixed powder was passed through a 120 mesh sieve, filled into a No. 2 capsule, and sealed, and a total of 1000 tablets were prepared.

Compounds I-1-3, I-1-6, I-2-2, I-2-3, I-2-6, I-4-2, I-4-3, I-4-4, I -4-5, I-4-6, I-5-2, I-5-3, I-6-2, I-6-3, I-7-2, I-7-3, I-8 The pharmaceutical capsule compositions of -2, I-8-3, I-8-6, I-9-2, I-9-3, I-9-6 are as described above.

Example 56 Pharmaceutical Tablet Composition of a Compound of the Invention

The pharmaceutical tablet composition of the compound I-4-2, the compound I-4-2 is 1 part by weight, the lactose is 0.1-0.5 part by weight, the hydroxypropylcellulose is 0.05-0.08 part by weight, and the sodium carboxymethyl starch is 0.008- 0.014 parts by weight, an appropriate amount of povidone K30, 0.01-0.05 parts by weight of magnesium stearate; tablets are prepared according to the above ratio, each tablet containing compound 1-6 is 0.5-10 mg, respectively.

Compounds I-1-2, I-1-3, I-1-6, I-2-2, I-2-3, I-2-6, I-4-3, I-4-4, I -4-5, I-4-6, I-5-2, I-5-3, I-6-2, I-6-3, I-7-2, I-7-3, I-8 The pharmaceutical tablet compositions of -2, I-8-3, I-8-6, I-9-2, I-9-3, I-9-6 are as described above.

Example 57 Pharmaceutical Injectable Composition of a Compound of the Invention

A pharmaceutical injection composition of the compound I-1-1, which contains I-1-1 mannitol ester, 34 g of disodium hydrogen phosphate, and a sufficient amount of water for injection. The preparation method is as follows: a. Dissolve disodium hydrogen phosphate and I-1-1 mannitol ester in water for injection, and arrange to 2000 mL with water for injection; b, the solution obtained in step a is filtered, and dispensed into 1000 bottles of 2 mL vials. The semi-catch is obtained; the obtained vial in c, b is placed in a lyophilizer to prepare a lyophilized powder, which is fully stoppered; and the obtained vial in the d, c is covered with an aluminum lid and inspected.

Compounds I-2-1, I-3-1, I-4-1, I-5-1, I-6-1, I-7-1, I-8-1, I-9-1, I The pharmaceutical injection compositions of -1-5, I-1-5-1, I-3-5, I-3-5-1, I-4-5, and I-4-5-1 are the same as above.

Embodiment 58 A pharmaceutical liposome composition of a compound of the invention

A pharmaceutical liposome composition of Compound I-2-2, containing 5 g of Compound 1-1-2 and 6.7 g of lecithin, 3.3 g of cholesterol, 5 g of Vitamin C, and a sufficient amount of PBS buffer solution (pH 7.4).

The preparation method comprises the following steps: a, mixing compound I-1-2, lecithin and cholesterol, and dissolving in chloroform; b, a solution obtained by b-concentrating at 37 ° C under reduced pressure to obtain a dry film; dry film obtained in c, b The container was added to a PBS buffer solution (pH 7.4) to 500 mL, and ultrasonically treated.

Compounds I-1-2, I-1-5, I-3-2, I-3-5, I-4-2, I-4-5, I-5-2, I-5-5, I Pharmaceutical lipids of -6-2, I-6-5, I-7-2, I-7-5, I-8-2, I-8-5, I-9-2, I-9-5 The body composition is the same as above.

The beneficial effects of the compounds of the present invention are illustrated below by way of experimental examples.

Multiple myeloma cells MM1S: purchased at the US ATCC.

Experimental Example 1 In vitro inhibitory activity of proteasome chymotrypsin-like protease (Proteasome Chymotrypsin-like Protease):

The test sample was dissolved in DMSO and stored at low temperature. The HPLC test was stable under the experimental conditions and during the test.

Experimental method: The activity of the fluorescent matrix Suc-Leu-Leu-Val-Tyr-AMC was used to observe the inhibition of enzyme activity by different compounds; the Try-AMC sequence in the hydrolysis matrix of Human proteasome chymotrypsin-like protease released AMC. Under the condition of excitation light of 355 nm emission at 460 nm, the fluorescence absorption value of the product AMC after hydrolysis can be detected to observe and calculate the inhibitory activity of the compound on the enzyme activity; the results are as follows: Table 1 Proteasome inhibitory activity of the compound

As shown in the above table, the compounds of the present invention have better proteasome chymotrypsin-like protease inhibitory activity.

Experimental Example 2 Anti-multiple myeloma cell proliferation assay of the compound of the present invention

Multiple myeloma cells MM1S (purchased in ATCC, USA) were plated at 5,000 cells/well for 96-well plates. In the culture system, the test sample was dissolved in DMSO and stored at a low temperature, and the test sample was stable under the experimental conditions and during the test. The highest concentration of the compound was 50 μM, and Ixazomib Citrate and Ixazomib were used as positive controls. Dilute the drug concentration according to a 5-fold gradient. After 48 hours of compound action, 10 μl of CCk-8 was added, and after incubation for 6 hours, the absorbance at 450 nM was measured by a microplate reader.

The method for calculating the tumor cell growth inhibition rate according to the drug is carried out according to the National Cancer Institute (NCI) standard method: when Ti (medical group culture for 48 hours, CCK-8 color absorption OD value) ≥ Tz (without drugs) CCK-8 color absorbing OD value at the start of group culture, tumor cell survival rate = [(Ti-Tz) / (C-Tz)] × 100, wherein C is CCK-8 after 48 hours without drug group The color absorbs the OD value; when Ti < Tz, the tumor cell survival rate = [(Ti-Tz) / Tz] × 100. The results are as follows: Table 2 Compound anti-multiple myeloma cell proliferation and proliferation test results (nM)

Experimental Example 3 The inhibitory activity of the inventive compound of the present invention against HT-29 human colon cancer cell line was measured using a CCK-8 detection kit.

Collect logarithmic growth phase HT-29 human colon cancer cells, count, resuspend the cells with complete medium, adjust the cell concentration to the appropriate concentration (determined according to the cell density optimization test results), inoculate a 96-well plate, add 100 μl of cell suspension per well . The cells were incubated for 24 hours at 37 ° C, 100% relative humidity, 5% CO ₂ incubator. The test compound was diluted with the medium to the corresponding concentration of action set, and the cells were added at 25 μl/well. The final concentration of the compound was diluted from 100 μM to 0 μM in 4 fold gradients for a total of 10 concentration points. The cells were incubated for 72 hours at 37 ° C, 100% relative humidity, in a 5% CO ₂ incubator. The medium was aspirated, 100 μl of fresh medium containing 10% CCK-8 was added, and incubated in a 37 ° C incubator for 2-4 hours. The absorbance at 450 nm was measured on a SpectraMax M5 Microplate Reader with a light shock. The absorbance at 650 nm was used as a reference. The IC50 results of the inhibitory activity of the test compound on the HT-29 human colon cancer cell line are shown in Table 3. Table 3 Inhibitory activity of the compound of the present invention on HT-29 human colon cancer cell line (IC50, nM)

The results showed that the compounds of the present invention had a very significant inhibitory effect on the proliferation of HT-29 tumor cell lines compared to the control compounds Ixazomib and Ixazomib-DEA.

In the experimental example of inhibition of tumor cells in the above experimental examples, the compounds I-4-1, I-4-2, I-8-1, I-8-2, I-9-1, and I-9-2 were tested. Non-small cell lung cancer cells HCC827, breast cancer cells MDA-MB-231, cervical cancer cells Hela, mantle cell lymphoma cells Jeko-1, B cells non-Hodgkin's lymphoma cells REC-1, kidney cancer cells 786-O Inhibitory activity of gastric cancer cell MKN45 and nasopharyngeal carcinoma cell line HNE1 (all purchased in the United States ATCC), as shown in Table 4 below: Table 4 Inhibitory activity of the compound of the present invention on tumor cells

As shown in the above table, the compound of the present invention is applied to non-small cell lung cancer cells, breast cancer cells, cervical cancer cells, mantle cell lymphoma cells, non-Hodgkin lymphoma cells, renal cancer cells, gastric cancer cells, and nasopharyngeal cancer cells. Significant inhibitory activity.

Experimental Example 4 Determination of antitumor activity of the inventive compound by using a transplanted multiple myeloma model

Tumor model was established using MM1.S multiple myeloma cells and SCID mice: 100 μl of 1640 medium was resuspended in 3×10 ⁷ MM1.S cells, and mixed with 100 μl of Matrigel. The above 200 μl homogenate system was injected into the right abdomen of SCID mice (5 weeks old, female). After 6-7 days, a tumor of visible size (approximately 100 mm ³ ) was formed at the site of tumor injection. The experimental animals were divided into 7 groups: 1. blank control group, drug carrier (5% HPβCD) for intragastric administration; 2. Ixazomib Citrate administration group, drug was dissolved with 5% HPβCD, and the dose was 10 mg. /Kg; 3, I-4-2 administration group, the drug was dissolved with 5% HPβCD, the dosage was 10 mg/Kg; 4, the drug of the I-4-4 administration group was dissolved with 5% HPβCD, The dosage was 10 mg/Kg; 5. The drug in the I-4-6 administration group was dissolved with 5% HPβCD at a dose of 10 mg/Kg; 6. The drug in the I-8-2 administration group was treated with 5% HPβCD. The dissolution was carried out at a dose of 10 mg/kg; 7. The drug of the I-9-2 administration group was dissolved with 5% HPβCD at a dose of 10 mg/kg. The drug was administered twice a week for 18 consecutive days, and the tumor volume was measured every 2 days. The rats were weighed and the data were recorded. After the end of the experiment, the tumor was exfoliated and its volume and weight were measured directly.

The mean volume change of tumor tissue in tumor-bearing mice is recorded as shown in Fig. 5. After 18 days, the blank control group of SCID mice showed obvious tumor proliferation, and the tumor diameter was about 2 cm. Compounds I-4-2, I-4-4, I-4-6, I-8-2, I-9-2 In the drug-administered group, good anti-tumor activity in vivo was observed, and no obvious tumor protrusion was observed on the skin. The subcutaneous tumor tissue was further exfoliated and its volume and weight were measured and recorded as shown in Table 5 below: Table 5 Mean quality and volume of mouse tumor tissue

During the experiment, SCID mice did not die due to the action of the drug; after the end of the experiment, SCID mice did not lose weight significantly, and there was no significant weight loss. The average body weight change was recorded as shown in Fig. 6. This dose (10 mg/kg) was not significantly toxic to mice.

As a result, it was confirmed that the candidate compound of the present invention has excellent in vivo antitumor activity.

In summary, the present invention provides a novel boronic acid derivative, and provides the use of the boronic acid derivative in the preparation of an antitumor drug or a proteasome inhibitor. Specifically, the present invention provides the boronic acid derivative in Use in the preparation of proteasome chymotrypsin-like protease inhibitors, and in the prevention and/or treatment of cancer drugs such as multiple myeloma and colon cancer; clinical screening and/or preparation of proteasome inhibitors Drugs and cancer drugs such as multiple myeloma and colon cancer offer a new option.

no

Figure 1 is a mass spectrum of Compound I-1-2. Figure 2 is a mass spectrum of the compound I-3-2. Figure 3 is a mass spectrum of compound I-4-2. Figure 4 is a mass spectrum of Compound I-5-2. Figure 5 is a graph showing the mean volume change of tumor tissues in tumor-bearing mice. Figure 6 is a graph showing the average body weight change during administration of tumor-bearing mice.

Claims (38)

a compound of the formula (I) or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof or boric anhydride: Wherein S _{1 is} selected from the group consisting of F, Cl, Br, I, C _1-6 alkyl, cyano or trifluoromethyl; and S _{2 is} selected from H, C _1-6 alkyl, cyano or trifluoromethyl When S _{1 is} selected from F, Cl, Br, I, S _{2 is} not H; R _{2 is} selected from C _1-6 alkyl; X ₁ and X _{2 are} selected from hydroxyl groups, or X ₁ and X ₂ are boron The atoms together form a substituted or unsubstituted 5-20 membered ring which additionally includes 0-2 heteroatoms selected from nitrogen, oxygen or sulfur. The compound according to claim 1, or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof or a boric anhydride, characterized in that the compound is as shown in the formula (II): Wherein R ₃ and R _{4 are} selected from hydrogen, or R ₃ and R ₄ together with the oxygen and boron atoms form a substituted or unsubstituted 5-20 membered ring, the ring further comprising 0-2 selected from the group consisting of A ring heteroatom of nitrogen, oxygen or sulfur. The compound according to claim 1 or 2, or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof or a boric anhydride, characterized in that the substituent of the 5-20 membered ring is 0-4 R ₁₁ ; wherein R ₁₁ are each independently selected from the group consisting of hydrazine, -OH, -COOH, -L ₁ -OH, -L ₁ -COOH, C ₁ -C ₄ alkyl, =Y, wherein L ₁ It is selected from a C ₁ -C ₄ alkylene group, Y is O or S; or two adjacent substituents R ₁₁ are bonded to form a 3-8 membered cycloalkane substituted by 0-4 R ₁₂ and a 3-8 membered heterocyclic ring. Or an aromatic hydrocarbon or a heteroaromatic hydrocarbon; wherein R _{12 is} each independently selected from the group consisting of hydrazine, -OH, -COOH, -L ₁ -OH, -L ₁ -COOH, C ₁ -C ₄ alkyl, amine group, F, Cl. The compound according to any one of claims 1 to 3, or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof or a boric anhydride, characterized in that the compound is as defined ( III): . The compound of any one of claims 1 to 4, or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof or a boric anhydride, characterized in that R _{2 is} selected from isobutyl . The compound of any one of claims 1 to 4, or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof or boric anhydride, characterized in that X ₁ and X _{2 are} selected from the group consisting of X ₁ and X _{2 are} selected from the group consisting of X ₁ and X ₂ The hydroxyl group, or X ₁ and X _{2 ,} together form a moiety which is cyclized with the two functional groups of the borate esterifying agent. The compound according to claim 6 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof or a boric anhydride, characterized in that X ₁ and X _{2 are} selected from a hydroxyl group. The compound according to claim 6 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, characterized in that the boronic acid esterifying agent is selected from at least one hydroxyl group or at least one a compound of a carboxyl group. The compound according to claim 8 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, characterized in that the borate esterifying agent is a boric acid ester containing a N atom. Chemical agent. The compound of claim 8 or 9 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, characterized in that when X ₁ and X _{2 are} co-formed with boron esterification When the two functional groups of the agent form a ring-forming moiety, the ring formed is a 5-10 membered ring. The compound according to claim 8 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, wherein the boronic acid esterifying agent is selected from the group consisting of monosaccharides. The compound according to claim 8 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, characterized in that the boronic acid esterifying agent is selected from the group consisting of C _4-10 saturated boron The acidifying agent wherein the sum of the amounts of the hydroxyl group and the carboxyl group is 2-4. The compound according to claim 8 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, characterized in that the boronic acid esterifying agent is selected from the group consisting of mannitol, citric acid, and a pharmaceutically acceptable salt thereof. Salicylic acid, substituted hydroxamic acid salicylate, malic acid, tartaric acid, glucose, diethanolamine, dipropanolamine, triethanolamine, tripropanolamine, N-methyldiethanolamine, N-butyldiethanolamine, and N Any of N-bis(2-hydroxyethyl)glycine. The compound according to claim 13 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, characterized in that the borate esterifying agent is selected from the group consisting of diethanolamine and dipropanolamine. , triethanolamine, tripropanolamine, N-methyldiethanolamine, N-butyldiethanolamine, N,N-bis(2-hydroxyethyl)glycine, citric acid. The compound according to claim 13 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, characterized by the substitution of the substituted salicylic acid and the substituted hydroxyguanamine salicylate The groups are each independently selected from the group consisting of H, C _1-6 alkyl, carboxyl, hydroxy, C _1-6 alkoxy, fluoro, chloro, and amine. The compound of any one of claims 1 to 15 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof or a boric anhydride, characterized in that the ring Selected from the following structure: . The compound according to any one of claims 1 to 7 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof or a boric anhydride, characterized in that the compound is of the formula ( Ia): . The compound according to claim 17 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof or a boric anhydride, characterized in that the compound (Ia) is one of the following structures: . The compound according to any one of claims 1 to 6 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, wherein the compound is represented by the formula (Ib) : Wherein n ₁ , n _{2 are} selected from 1 or 2; R _{5 is} selected from H, C _1-6 alkyl, -L ₁ -OH or -L ₁ -COOH, wherein L _{1 is} selected from C ₁ -C ₄ Alkylene. The compound according to claim 19, or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, wherein the compound (Ib) is as shown in the formula (Ib1): R ₅ ^{' is} selected from the group consisting of H, C _1-6 alkyl, 2-hydroxyethyl or carboxymethyl. The compound according to claim 20, or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, wherein the compound (Ib1) is one of the following structures: . The compound according to the invention of claim 19, or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, wherein the compound (Ib) is as shown in the formula (Ib2): R ₅ ^{'' is} selected from the group consisting of H, C _1-6 alkyl, 3-hydroxypropyl. The compound according to claim 22, or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, wherein the compound (Ib2) is one of the following structures: . The compound according to any one of claims 1 to 6 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, wherein the compound is represented by the formula (Ic) : Wherein n ₃ and n ₄ are each independently selected from 0 or 1. The compound according to claim 24, or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, wherein the compound is represented by the formula (Ic1): . The compound according to claim 25, or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, wherein the compound (Ic1) is one of the following structures: . The compound according to claim 24, or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, wherein the compound is represented by the formula (Ic2): . The compound according to claim 27, or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, wherein the compound (Ic2) is one of the following structures: . The compound according to any one of claims 1 to 6 or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, wherein the compound is represented by the formula (Id) : Wherein X is selected from O or NR, and R is OH; and R _{7 is} selected from the group consisting of H, C _1-6 alkyl, C _1-6 alkoxy, hydroxy, carboxy, amine, F, Cl, Br, I. The compound according to the invention of claim 29, or a crystalline form thereof, or a pharmaceutically acceptable salt thereof, or a solvate thereof, wherein the compound (Id) is one of the following structures: . The compound according to any one of claims 1 to 30, or a pharmaceutically acceptable salt thereof, or a prodrug thereof, or a solvate thereof or a boric anhydride, for preparing an antitumor drug or a proteasome inhibitor Use in medicine. The use according to claim 31, wherein the proteasome inhibitor is a proteasome chymotrypsin-like protease inhibitor. The use according to claim 31, characterized in that the antitumor drug is a drug for preventing and/or treating plasmacytoma. The use according to claim 33, characterized in that the plasmacytoma is multiple myeloma. The use according to claim 31, wherein the tumor is colon cancer, cervical cancer, lung cancer, lymphoma, ovarian cancer, kidney cancer, stomach cancer, nasopharyngeal cancer. A pharmaceutical composition comprising the compound according to any one of claims 1 to 30, or a pharmaceutically acceptable salt thereof or boric anhydride as an active ingredient, plus pharmaceutically acceptable Preparation of excipients. The pharmaceutical composition according to claim 36, wherein the pharmaceutically acceptable excipient is selected from the group consisting of a diluent, a filler, a coloring agent, a glidant, a lubricant, a binder, a stabilizer, Any one or more of a suspending agent or a buffering agent. The pharmaceutical composition according to claim 36, which is characterized in that the preparation is a tablet, a capsule, an oral solution, an injection, a transdermal agent, an aerosol solid preparation, a liposome preparation or a controlled release preparation. .