Preparation method and application of tris (2-methyl-2-phenylpropyl) tin-4-methyl salicylate complex

Abstract

The invention discloses a preparation method and application of a tris (2-methyl-2-phenylpropyl) stann-4-methyl salicylate complex. The tris (2-methyl-2-phenylpropyl) stann-4-methyl salicylate complex is a complex # imgabs0 # with the following structural formula (I). The invention also discloses a preparation method of the tris (2-methyl-2-phenylpropyl) stann-4-methyl salicylate complex and an application of the tris (2-methyl-2-phenylpropyl) stann-4-methyl salicylate complex in preparation of antitumor drugs.

Description

Technical Field

[0001] The present invention relates to a tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex, a preparation method thereof, and an application of the complex in the preparation of anti-tumor drugs. Background Art

[0002] Organotin carboxylates have high biological activities and have broad application prospects in the fields of sterilization, insecticidal, anti-cancer drug preparation, etc. Therefore, the research on the synthesis, structure and biological activities of organotin carboxylate complexes has received extensive attention from scientists. Existing research shows that the hydrocarbon group R in organotin carboxylates is the main factor determining the anti-cancer activity of the compound. For example, cyclohexyl, n-butyl and phenyltin compounds have strong anti-cancer activities, ethyl is the second, and methyl has almost no anti-cancer activity. Moreover, because known organotin compounds generally have strong toxicity, their applications are subject to certain limitations. Adjusting the balance between their toxicity and biological activities is an important research direction at present. One of the currently effective methods is to greatly change the coordination mode of tin atoms by functionalizing the hydrocarbon group or ligand, thereby affecting the biological activities of organotin complexes. Research shows that the toxicity of organotin compounds is related to their relative molecular masses. The smaller the relative molecular mass, the greater the toxicity, and the relatively large molecular mass of large steric hindrance hydrocarbon tin. Therefore, synthesizing novel large steric hindrance hydrocarbon tin carboxylate complexes and studying their structures and biological activities have important research significance.

[0003] The bis[tris(2-methyl-2-phenylpropyl)tin]carboxylate disclosed in European Patent EP0177785B1 has stronger biological activities than bis[tris(2-methyl-2-phenylpropyl)tin]oxide.

[0004] Chinese Patent CN 106279256 B discloses the application of bis[tris(2-methyl-2-phenyl)propyltin]2,2'-biphenyldicarboxylate complex in the preparation of drugs for treating lung cancer, breast cancer and liver cancer.

[0005] Chinese Patent CN 106279253 B discloses the application of bis[tris(2-methyl-2-phenyl)propyltin]5-nitroisophthalate complex in the preparation of drugs for treating lung cancer, breast cancer and liver cancer.

[0006] Salicylic acid is a fat-soluble organic carboxylic acid and has long been used as a main raw material for synthesizing antipyretic and analgesic drugs (aspirin). The latest research shows that salicylic acid has an effect on the treatment of type I diabetic patients with heart diseases and is recommended as a drug for preventing complications. Some salicylic acid ligands also have good drug activities. For example, 5-aminosalicylic acid, also known as mesalazine, is a new drug for treating ulcerative colitis. Therefore, it is very necessary to combine a bulky hydrocarbon group tin compound with biological activity and a salicylic acid ligand with drug activity to synthesize a novel bulky hydrocarbon group tin carboxylate compound and study its biological activity.

[0007] Based on the fact that bis[tris(2-methyl-2-phenylpropyl)]tin oxide is a substance proven to have good biological activity through experiments, and 2-methyl-2-phenylpropyl has characteristics such as large steric hindrance and large molecular weight, the present invention selects bis[tris(2-methyl-2-phenylpropyl)]tin oxide and reacts it with the salicylic acid ligand 4-methylsalicylic acid under certain conditions to synthesize a complex with strong inhibitory activity against A549 (human lung cancer cells), Hela (human cervical cancer cells), and HGC-27 (human gastric cancer cells), providing a new way for the development of anticancer drugs. Summary of the Invention

[0008] Aiming at the problems existing in the above-mentioned prior art, the first object of the present invention is to provide a tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex.

[0009] The second object of the present invention is to provide a preparation method of the above-mentioned tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex.

[0010] The third object of the present invention is to provide the application of the above-mentioned tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex in the preparation of anticancer drugs.

[0011] As a tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex of the first aspect of the present invention, its structural formula (I) is as follows: (I).

[0012] The tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex of the present invention is analyzed by elemental analysis, infrared spectroscopy, nuclear magnetic resonance spectroscopy, and X-ray single crystal structure analysis, and the results are as follows: Elemental analysis (C 38 H 46 O 3 Sn): Theoretical value: C, 68.17; H, 6.93. Measured value: C, 68.12; H, 6.96.

[0013] IR (KBr, v / cm -1 ): 3057.17 (m), 2954.95 (s), 2920.23 (m), 2860.43 (m), 1641.42 (s), 1597.06 (s), 1494.83 (s), 1440.83 (m), 1382.96 (s), 1346.31 (m), 1307.74 (m), 1253.73 (s), 1163.08 (m), 1074.35 (m), 1029.99 (m), 947.05 (m), 792.74 (m), 769.60 (s), 700.16 (s), 638.44 (m), 619.15 (m), 555.50 (m), 474.49 (m), 441.70 (w).

[0014] 1 1H NMR (CDCl 3 , 500 MHz) δ (ppm): 11.72 (s, 1H), 7.62 (d, J J = 8 Hz, 1H), 7.29 - 7.26 (m, 6H), 7.21 (t, J J = 7 Hz, 3H), 7.09 (d, J J = 7.5 Hz, 6H), 6.77 (s, 1H), 6.66 (d, J J = 7.5 Hz, 1H), 2.34 (s, 3H), 1.24 - 1.22 (m, 24H).

[0015] 13 13C NMR (CDCl 3 , 125 MHz) δ (ppm): 173.73, 161.56, 150.69, 145.51, 130.82, 128.36, 125.88, 125.20, 119.67, 117.10, 112.52, 37.73, 37.66, 32.76 (t, J J = 22.5 Hz), 21.72.

[0016] 119 119Sn NMR (CDCl 3 , 186 MHz), δ (ppm): 104.86.

[0017] The tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex of the present invention has a crystal structure, and its crystallographic data: The crystal belongs to the triclinic system, and the space group P-1 , a a = 0.94022(6) nm, b b = 1.15038(8) nm, c c = 1.73731(12) nm, α α = 105°, β β = 103°, γ γ = 100°, Z Z = 2, V = 1.7064(2) nm 3 , D ρc = 1.303 Mg·m -3 , μ μ(MoKa) = 0.782 mm -1 , F F(000) = 696, 2.29° < θ θ < 27.61°, Crystal size: 0.22 × 0.25 × 0.19 mm, R R1 = 0.0288, wR wR2 = 0.0633.

[0018] The structural feature of the tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex of the present invention is that the central tin in the molecule forms a distorted tetrahedral configuration with the coordinating atoms.

[0019] As a preparation method of the tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex according to the second aspect of the present invention, bis[tris(2-methyl-2-phenylpropyl)]tin oxide, 4-methylsalicylic acid and anhydrous methanol as the solvent are sequentially added into a microwave reaction vessel. Under an air atmosphere, microwave reaction is carried out at a radiation power of 800 W and a temperature of 100 °C for 60 - 120 min. After the reaction is completed, it is naturally cooled, filtered, and the solvent is naturally volatilized and crystallized at room temperature to obtain white crystals, which are the tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex.

[0020] In a preferred embodiment of the present invention, the molar ratio of bis[tris(2-methyl-2-phenylpropyl)]tin oxide to 4-methylsalicylic acid is 1.0:(2.0 - 2.1).

[0021] In a preferred embodiment of the present invention, the amount of anhydrous methanol used as the solvent is 10 - 15 mL per millimole of bis[tris(2-methyl-2-phenylpropyl)]tin oxide.

[0022] Use of tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex as the third aspect of the present invention in the preparation of anti-cancer drugs.

[0023] The applicant has conducted in vitro anti-tumor activity confirmation research on the above complex and confirmed that the complex has certain anti-tumor biological activity. That is to say, the use of the above complex is in the preparation of anti-tumor drugs. Specifically, it is in the preparation of anti-human lung cancer drugs, human cervical cancer drugs, and human gastric cancer drugs.

[0024] The tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex of the present invention shows good anti-cancer activity against human lung cancer cells, human cervical cancer cells, human gastric cancer cells, etc. Anti-lung cancer, anti-cervical cancer, and anti-gastric cancer drugs can be prepared using it as a raw material. Compared with the commonly used platinum-based anti-cancer drugs at present, the tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex of the present invention has the characteristics of high anti-cancer activity, low cost, and simple preparation method, providing a new way for the development of anti-cancer drugs. Description of the Drawings

[0025] Figure 1 It is the crystal molecular structure diagram of tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex.

[0026] Figure 2 It is the IR spectrum of tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex.

[0027] Figure 3 It is for the 1 H NMR spectrum of tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex.

[0028] Figure 4 It is for the 13 C NMR spectrum of tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex.

[0029] Figure 5 It is for the 119 Sn NMR spectrum of tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex. Detailed Embodiments

[0030] The present invention is further described in detail by the following examples, but it should be noted that the scope of the present invention is not limited by any of these examples.

[0031] Example 1: Preparation of tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex: 1.0531 g (1 mmol) of bis[tris(2-methyl-2-phenylpropyl)]tin oxide, 0.3052 g (2 mmol) of 4-methylsalicylic acid, and 10 mL of anhydrous methanol as the solvent were sequentially added to a microwave reaction vessel. Under an air atmosphere, microwave reaction was carried out at a radiation power of 800 W and a temperature of 100 °C for 60 min. After the reaction, it was naturally cooled, filtered, and the solvent was allowed to naturally evaporate and crystallize at room temperature to obtain white crystals, which were tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex. Yield: 75%, melting point: 120 - 122 °C.

[0032] Elemental analysis (C 38 H 46 O 3 Sn): Theoretical values: C, 68.17; H, 6.93. Measured values: C, 68.12; H, 6.96.

[0033] IR (KBr, v / cm -1 ): 3057.17 (m), 2954.95 (s), 2920.23 (m), 2860.43 (m), 1641.42 (s), 1597.06 (s), 1494.83 (s), 1440.83 (m), 1382.96 (s), 1346.31 (m), 1307.74 (m), 1253.73 (s), 1163.08 (m), 1074.35 (m), 1029.99 (m), 947.05 (m), 792.74 (m), 769.60 (s), 700.16 (s), 638.44 (m), 619.15 (m), 555.50 (m), 474.49 (m), 441.70 (w).

[0034] 1 H NMR (CDCl 3 , 500 MHz) δ (ppm): 11.72 (s, 1H), 7.62 (d, J = 8 Hz, 1H), 7.29 - 7.26 (m, 6H), 7.21 (t, J = 7 Hz, 3H), 7.09 (d, J = 7.5 Hz, 6H), 6.77 (s, 1H), 6.66 (d, J = 7.5 Hz, 1H), 2.34 (s, 3H), 1.24 - 1.22 (m, 24H).

[0035] 13 C NMR (CDCl 3 , 125 MHz) δ (ppm): 173.73, 161.56, 150.69, 145.51, 130.82, 128.36, 125.88, 125.20, 119.67, 117.10, 112.52, 37.73, 37.66, 32.76 (t, J J = 22.5Hz), 21.72。

[0036] 119 Sn NMR (CDCl 3 , 186 MHz), δ (ppm): 104.86。

[0037] Its crystallographic data: The crystal belongs to the triclinic system, space group P-1 , a a = 0.94022(6) nm, b b = 1.15038(8) nm, c c = 1.73731(12) nm, α α = 105°, β β = 103°, γ γ = 100°, Z Z = 2, V = 1.7064(2) nm 3 , D ρc = 1.303 Mg·m -3 , μ μ(MoKα) = 0.782 mm -1 , F F(000) = 696, 2.29° < θ θ < 27.61°, Crystal size: 0.22 × 0.25 × 0.19 mm, R R1 = 0.0288, wR wR2 = 0.0633。

[0038] Example 2: Preparation of tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex: 1.0532 g (1.0 mmol) of bis[tris(2-methyl-2-phenylpropyl)]tin oxide, 0.3214 g (2.1 mmol) of 4-methylsalicylic acid and 15 mL of anhydrous methanol as the solvent were successively added to a microwave reaction vessel. Under an air atmosphere, microwave reaction was carried out at a radiation power of 800 W and a temperature of 100 °C for 60 min. After the reaction, it was naturally cooled, filtered, and the solvent was allowed to naturally volatilize and crystallize at room temperature to obtain white crystals, namely tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex. Yield: 79%, melting point: 120 - 122 °C.

[0039] Elemental analysis (C 38 H 46 O 3 Sn): Theoretical values: C, 68.17; H, 6.93. Measured values: C, 68.12; H, 6.96.

[0040] IR (KBr, v / cm -1 ): 3057.17 (m), 2954.95 (s), 2920.23 (m), 2860.43 (m), 1641.42 (s), 1597.06 (s), 1494.83 (s), 1440.83 (m), 1382.96 (s), 1346.31 (m), 1307.74 (m), 1253.73 (s), 1163.08 (m), 1074.35 (m), 1029.99 (m), 947.05 (m), 792.74 (m), 769.60 (s), 700.16 (s), 638.44 (m), 619.15 (m), 555.50 (m), 474.49 (m), 441.70 (w).

[0041] 1 H NMR (CDCl 3 , 500 MHz) δ (ppm): 11.72 (s, 1H), 7.62 (d, J = 8 Hz, 1H), 7.29 - 7.26 (m, 6H), 7.21 (t, J = 7 Hz, 3H), 7.09 (d, J = 7.5 Hz, 6H), 6.77 (s, 1H), 6.66 (d, J = 7.5 Hz, 1H), 2.34 (s, 3H), 1.24 - 1.22 (m, 24H).

[0042] 13 C NMR (CDCl 3 , 125 MHz) δ (ppm): 173.73, 161.56, 150.69, 145.51, 130.82, 128.36, 125.88, 125.20, 119.67, 117.10, 112.52, 37.73, 37.66, 32.76 (t, J = 22.5 Hz), 21.72。

[0043] 119 Sn NMR (CDCl 3 , 186 MHz), δ (ppm): 104.86。

[0044] Its crystallographic data: The crystal belongs to the triclinic system, space group P-1 , a = 0.94022(6) nm, b = 1.15038(8) nm, c = 1.73731(12) nm, α = 105°, β = 103°, γ = 100°, Z = 2, V = 1.7064(2) nm 3 , D c = 1.303 Mg·m -3 , μ (MoKa) = 0.782 mm -1 , F (000) = 696, 2.29° < θ < 27.61°, Crystal size: 0.22 × 0.25 × 0.19 mm, R = 0.0288, wR = 0.0633。

[0045] Example 3: Preparation of tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex: 1.0539 g (1 mmol) of bis[tris(2-methyl-2-phenylpropyl)]tin oxide, 0.3050 g (2 mmol) of 4-methylsalicylic acid, and 12 mL of anhydrous methanol as the solvent were sequentially added to a microwave reaction vessel. Under an air atmosphere, microwave reaction was carried out at a radiation power of 800 W and a temperature of 100 °C for 120 min. After the reaction, it was naturally cooled, filtered, and the solvent was allowed to naturally volatilize and crystallize at room temperature to obtain white crystals, which were tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex. Yield: 77%, melting point: 120 - 122 °C.

[0046] Elemental analysis (C 38 H 46 O 3 Sn): Theoretical values: C, 68.17; H, 6.93. Measured values: C, 68.12; H, 6.96.

[0047] IR (KBr, v / cm -1 ): 3057.17 (m), 2954.95 (s), 2920.23 (m), 2860.43 (m), 1641.42 (s), 1597.06 (s), 1494.83 (s), 1440.83 (m), 1382.96 (s), 1346.31 (m), 1307.74 (m), 1253.73 (s), 1163.08 (m), 1074.35 (m), 1029.99 (m), 947.05 (m), 792.74 (m), 769.60 (s), 700.16 (s), 638.44 (m), 619.15 (m), 555.50 (m), 474.49 (m), 441.70 (w).

[0048] 1 H NMR (CDCl 3 , 500 MHz) δ (ppm): 11.72 (s, 1H), 7.62 (d, J = 8 Hz, 1H), 7.29 - 7.26 (m, 6H), 7.21 (t, J = 7 Hz, 3H), 7.09 (d, J = 7.5 Hz, 6H), 6.77 (s, 1H), 6.66 (d, J = 7.5 Hz, 1H), 2.34 (s, 3H), 1.24 - 1.22 (m, 24H).

[0049] 13 C NMR (CDCl 3 , 125 MHz) δ (ppm): 173.73, 161.56, 150.69, 145.51, 130.82, 128.36, 125.88, 125.20, 119.67, 117.10, 112.52, 37.73, 37.66, 32.76 (t, J J = 22.5 Hz), 21.72。

[0050] 119 Sn NMR (CDCl 3 , 186 MHz), δ (ppm): 104.86。

[0051] Its crystallographic data: The crystal belongs to the triclinic system, space group P-1 , a a = 0.94022(6) nm, b b = 1.15038(8) nm, c c = 1.73731(12) nm, α α = 105°, β β = 103°, γ γ = 100°, Z Z = 2, V = 1.7064(2) nm 3 , D ρc = 1.303 Mg·m -3 , μ μ(MoKα) = 0.782 mm -1 , F F(000) = 696, 2.29° < θ θ < 27.61°, Crystal size: 0.22 × 0.25 × 0.19 mm, R R1 = 0.0288, wR wR2 = 0.0633。

[0052] Example 4: Preparation of tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex: 2.1064 g (2.0 mmol) of bis[tris(2-methyl-2-phenylpropyl)]tin oxide, 0.6110 (4.0 mmol) of 4-methylsalicylic acid and 25 mL of anhydrous methanol as the solvent were successively added to a microwave reaction vessel. Under an air atmosphere, microwave reaction was carried out at a radiation power of 800 W and a temperature of 100 °C for 60 min. After the reaction, it was naturally cooled, filtered, and the solvent was allowed to naturally volatilize and crystallize at room temperature to obtain white crystals, namely tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex. Yield: 77%, melting point: 120 - 122 °C.

[0053] Elemental analysis (C 38 H 46 O 3 Sn): Theoretical values: C, 68.17; H, 6.93. Measured values: C, 68.12; H, 6.96.

[0054] IR (KBr, v / cm -1 ): 3057.17 (m), 2954.95 (s), 2920.23 (m), 2860.43 (m), 1641.42 (s), 1597.06 (s), 1494.83 (s), 1440.83 (m), 1382.96 (s), 1346.31 (m), 1307.74 (m), 1253.73 (s), 1163.08 (m), 1074.35 (m), 1029.99 (m), 947.05 (m), 792.74 (m), 769.60 (s), 700.16 (s), 638.44 (m), 619.15 (m), 555.50 (m), 474.49 (m), 441.70 (w).

[0055] 1 H NMR (CDCl 3 , 500 MHz) δ (ppm): 11.72 (s, 1H), 7.62 (d, J = 8 Hz, 1H), 7.29 - 7.26 (m, 6H), 7.21 (t, J = 7 Hz, 3H), 7.09 (d, J = 7.5 Hz, 6H), 6.77 (s, 1H), 6.66 (d, J = 7.5 Hz, 1H), 2.34 (s, 3H), 1.24 - 1.22 (m, 24H).

[0056] 13 C NMR (CDCl 3 , 125 MHz) δ (ppm): 173.73, 161.56, 150.69, 145.51, 130.82, 128.36, 125.88, 125.20, 119.67, 117.10, 112.52, 37.73, 37.66, 32.76 (t, J = 22.5 Hz), 21.72。

[0057] 119 Sn NMR (CDCl 3 , 186 MHz), δ (ppm): 104.86。

[0058] Its crystallographic data: The crystal belongs to the triclinic system, space group P-1 , a = 0.94022(6) nm, b = 1.15038(8) nm, c = 1.73731(12) nm, α = 105°, β = 103°, γ = 100°, Z = 2, V = 1.7064(2) nm 3 , D c = 1.303 Mg·m -3 , μ (MoKa) = 0.782 mm -1 , F (000) = 696, 2.29° < θ < 27.61°, Crystal size: 0.22 × 0.25 × 0.19 mm, R = 0.0288, wR = 0.0633。

[0059] Example 5: Preparation of tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex: 2.1068 g (2.0 mmol) of bis[tris(2-methyl-2-phenylpropyl)]tin oxide, 0.6262 g (4.1 mmol) of 4-methylsalicylic acid and 25 mL of anhydrous methanol as the solvent were successively added to a microwave reaction vessel. Under an air atmosphere, microwave reaction was carried out at a radiation power of 800 W and a temperature of 100 °C for 90 min. After the reaction, it was naturally cooled, filtered, and the solvent was allowed to naturally volatilize and crystallize at room temperature to obtain white crystals, which were tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex. Yield: 76%, melting point: 120 - 122 °C.

[0060] Elemental analysis (C 38 H 46 O 3 Sn): Theoretical values: C, 68.17; H, 6.93. Measured values: C, 68.12; H, 6.96.

[0061] IR (KBr, v / cm -1 ): 3057.17 (m), 2954.95 (s), 2920.23 (m), 2860.43 (m), 1641.42 (s), 1597.06 (s), 1494.83 (s), 1440.83 (m), 1382.96 (s), 1346.31 (m), 1307.74 (m), 1253.73 (s), 1163.08 (m), 1074.35 (m), 1029.99 (m), 947.05 (m), 792.74 (m), 769.60 (s), 700.16 (s), 638.44 (m), 619.15 (m), 555.50 (m), 474.49 (m), 441.70 (w).

[0062] 1 H NMR (CDCl 3 , 500 MHz) δ (ppm): 11.72 (s, 1H), 7.62 (d, J = 8 Hz, 1H), 7.29 - 7.26 (m, 6H), 7.21 (t, J = 7 Hz, 3H), 7.09 (d, J = 7.5 Hz, 6H), 6.77 (s, 1H), 6.66 (d, J = 7.5 Hz, 1H), 2.34 (s, 3H), 1.24 - 1.22 (m, 24H).

[0063] 13 C NMR (CDCl 3 , 125 MHz) δ (ppm): 173.73, 161.56, 150.69, 145.51, 130.82, 128.36, 125.88, 125.20, 119.67, 117.10, 112.52, 37.73, 37.66, 32.76 (t, J J = 22.5Hz), 21.72。

[0064] 119 Sn NMR (CDCl 3 , 186 MHz), δ (ppm): 104.86。

[0065] Its crystallographic data: The crystal belongs to the triclinic system, space group P-1 , a a = 0.94022(6) nm, b b = 1.15038(8) nm, c c = 1.73731(12) nm, α α = 105°, β β = 103°, γ γ = 100°, Z Z = 2, V = 1.7064(2) nm 3 , D ρc = 1.303 Mg·m -3 , μ μ(MoKα) = 0.782 mm -1 , F F(000) = 696, 2.29° < θ θ < 27.61°, Crystal size: 0.22 × 0.25 × 0.19 mm, R R1 = 0.0288, wR wR2 = 0.0633。

[0066] Example 6: Preparation of tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex: 3.1596 g (3.0 mmol) of bis[tris(2-methyl-2-phenylpropyl)]tin oxide, 0.9158 g (6.0 mmol) of 4-methylsalicylic acid and 30 mL of anhydrous methanol as the solvent were successively added to a microwave reaction vessel. Under an air atmosphere, microwave reaction was carried out at a radiation power of 800 W and a temperature of 100 °C for 120 min. After the reaction, it was naturally cooled, filtered, and the solvent was allowed to naturally volatilize and crystallize at room temperature to obtain white crystals, which were tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex. Yield: 77%, melting point: 120 - 122 °C.

[0067] Elemental analysis (C 38 H 46 O 3 Sn): Theoretical values: C, 68.17; H, 6.93. Measured values: C, 68.12; H, 6.96.

[0068] IR (KBr, v / cm -1 ): 3057.17 (m), 2954.95 (s), 2920.23 (m), 2860.43 (m), 1641.42 (s), 1597.06 (s), 1494.83 (s), 1440.83 (m), 1382.96 (s), 1346.31 (m), 1307.74 (m), 1253.73 (s), 1163.08 (m), 1074.35 (m), 1029.99 (m), 947.05 (m), 792.74 (m), 769.60 (s), 700.16 (s), 638.44 (m), 619.15 (m), 555.50 (m), 474.49 (m), 441.70 (w).

[0069] 1 H NMR (CDCl 3 , 500 MHz) δ (ppm): 11.72 (s, 1H), 7.62 (d, J = 8 Hz, 1H), 7.29 - 7.26 (m, 6H), 7.21 (t, J = 7 Hz, 3H), 7.09 (d, J = 7.5 Hz, 6H), 6.77 (s, 1H), 6.66 (d, J = 7.5 Hz, 1H), 2.34 (s, 3H), 1.24 - 1.22 (m, 24H).

[0070] 13 C NMR (CDCl 3 , 125 MHz) δ (ppm): 173.73, 161.56, 150.69, 145.51, 130.82, 128.36, 125.88, 125.20, 119.67, 117.10, 112.52, 37.73, 37.66, 32.76 (t, J J = 22.5Hz), 21.72。

[0071] 119 Sn NMR (CDCl 3 , 186 MHz), δ (ppm): 104.86。

[0072] Its crystallographic data: The crystal belongs to the triclinic system, space group P-1 , a a = 0.94022(6) nm, b b = 1.15038(8) nm, c c = 1.73731(12) nm, α α = 105°, β β = 103°, γ γ = 100°, Z Z = 2, V = 1.7064(2) nm 3 , D ρc = 1.303 Mg·m -3 , μ μ(MoKα) = 0.782 mm -1 , F F(000) = 696, 2.29° < θ θ < 27.61°, Crystal size: 0.22 × 0.25 × 0.19 mm, R R1 = 0.0288, wR wR2 = 0.0633。

[0073] Test Example: The in vitro anti-cancer activity of the tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex of the present invention was determined by the MTT assay method.

[0074] MTT assay method: Based on the metabolic reduction of 3-(4,5-Dimethylthiazol-2-yl)-2,5-diArenyltetrazoliumbromide. Succinate dehydrogenase in the mitochondria of living cells can reduce exogenous MTT to water-insoluble blue-violet crystalline formazan and deposit it in the cells, while dead cells do not have this function. Dimethyl sulfoxide (DMSO) can dissolve the formazan in the cells. By measuring the optical density at a characteristic wavelength with an enzyme-linked immunosorbent assay (ELISA) reader, the number of living cells can be indirectly reflected.

[0075] The MTT method was used to determine the inhibitory activities of tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex prepared in Example 1 against human lung cancer cells (A549), human cervical cancer cells (Hela), and human gastric cancer cells (HGC-27).

[0076] Cell lines and culture systems: A549, Hela, and HGC-27 cell lines were obtained from the American Type Culture Collection (ATCC). They were cultured in vitro in RPMI1640 (GIBICO) medium containing 10% fetal bovine serum in a 5% (volume fraction) CO 2 incubator at 37 °C with saturated humidity.

[0077] Testing process: The test drug solutions (0.0625 μmol / L - 0.5 μmol / L) were added to each well according to the concentration gradient, and 3 parallel wells were set for each concentration. The experiment was divided into a drug test group (different concentrations of the test drug were added), a control group (only culture medium and cells were added, without the test drug), and a blank group (only culture medium was added, without cells and the test drug). The microtiter plate after adding the drug was placed in an incubator at 37 °C and 5% CO 2 for 24 h. The activity of the control drug was determined according to the method of the test sample. In the microtiter plate after 48 h of culture, 20 μL of MTT (prepared as 5 g / L with PBS solution) was added to each well. After placing it at 37 °C for 4 h, the supernatant was removed. 150 μL of DMSO was added to each well and shaken for 10 min to dissolve the formazan crystals. Finally, the absorbance values of each well were measured at a wavelength of 570 nm using a BioTek multifunctional ELISA reader.

[0078] Data processing: Data processing was performed using the GraAr Pad Prism version 5.0 program, and the IC 50 of the complex was obtained by fitting through a non-linear regression model with a sigmoidal dose-response in the program.

[0079] Analysis was performed on human lung cancer cell line (A549), human cervical cancer cell line (Hela), and human gastric cancer cell line (HGC-27) using the MTT analysis method to determine their IC 50The values are shown in Table 1. The conclusion is as follows: From the data in the table, it can be seen that the tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex of the present invention has relatively high anti-cancer activities against human lung cancer, human cervical cancer, and human gastric cancer, and can be used as a candidate complex for anti-cancer drugs.

[0080] Table 1 In vitro activity test data of the tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex as an anti-cancer drug. Human lung cancer cells Human cervical cancer cells Human gastric cancer cells Cell line A549 Hela HGC-27 <![CDATA[IC 50 μM]]> 1.9815 2.038 1.9385

[0081] The anti-cancer activity test methods of the tris(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complexes prepared in the remaining examples against human lung cancer cells (A549), human cervical cancer cells (Hela), and human gastric cancer cells (HGC-27) by the MTT method are the same as those in the test example, and the test results are basically the same as those in Table 1.

Claims

1. A tri(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex, which is a complex of the following structural formula (I): (I)。 2. The tri(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex as claimed in claim 1, wherein the infrared spectrum data are as follows: FT-IR (KBr, v / cm -1 ): 3057.17 (m), 2954.95 (s), 2920.23 (m), 2860.43 (m), 1641.42 (s), 1597.06 (s), 1494.83 (s), 1440.83 (m), 1382.96 (s), 1346.31 (m), 1307.74 (m), 1253.73 (s), 1163.08 (m), 1074.35 (m), 1029.99 (m), 947.05 (m), 792.74 (m), 769.60 (s), 700.16 (s), 638.44 (m), 619.15(m), 555.50(m), 474.49(m), 441.70 (w); Its NMR spectrum data: 1 H NMR (CDCl3, 500 MHz) δ (ppm):11.72 (s, 1H), 7.62 (d, J = 8 Hz, 1H), 7.29-7.26 (m, 6H), 7.21 (t, J = 7 Hz,3H), 7.09 (d, J = 7.5 Hz, 6H), 6.77 (s, 1H), 6.66 (d, J = 7.5 Hz, 1H), 2.34(s, 3H), 1.24-1.22 (m, 24H); 13 C NMR (CDCl3, 125 MHz) δ (ppm):173.73, 161.56,150.69, 145.51, 130.82, 128.36, 125.88, 125.20, 119.67, 117.10, 112.52,37.73, 37.66, 32.76 (t, J = 22.5 Hz), 21.72; 119 Sn NMR (CDCl3, 186 MHz), δ (ppm): 104.

86.

3. The tri(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex according to claim 1, wherein The tri(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex is a crystal structure, and its crystallographic data are as follows: triclinic system, space group P -1 , a =0.94022(6)nm, b =1.15038(8)nm, c =1.73731(12)nm, α =105°, β =103°, γ =100°, Z =2, V = 1.7064(2)nm 3 ; The central tin in the molecule and the coordinating atoms form a distorted tetrahedral configuration.

4. The method for preparing the tri(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex according to claim 1, characterized in that: Add bis(tri(2-methyl-2-phenylpropyl)]tin oxide, 4-methylsalicylic acid and solvent anhydrous methanol into a microwave reaction tank in sequence, and carry out microwave reaction at a radiation power of 800 W and a temperature of 100°C under air atmosphere for 60-120 min. After the reaction is completed, cool naturally, filter, and allow the solvent to evaporate and crystallize naturally at room temperature to obtain white crystals, which are tri(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex.

5. The preparation method according to claim 4, characterized in that: The molar ratio of the bis[tri(2-methyl-2-phenylpropyl)]tin oxide to 4-methylsalicylic acid is 1.0:(2.0-2.1).

6. The preparation method according to claim 4, characterized in that: The amount of the solvent anhydrous methanol is 10-15 ml per millimole of bis[tri(2-methyl-2-phenylpropyl)]tin oxide.

7. Use of the tri(2-methyl-2-phenylpropyl)tin-4-methylsalicylate complex of claim 1 in the preparation of anticancer drugs.

8. The use according to claim 7, wherein the cancer cells are lung cancer, cervical cancer, or gastric cancer.

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