Preparation method and application of tris (2-methyl-2-phenylpropyl) tin-5-methoxy salicylate complex

Abstract

The invention discloses a preparation method and application of a tris (2-methyl-2-phenylpropyl) stann-5-methoxy salicylate complex. The tris (2-methyl-2-phenylpropyl) stann-5-methoxy 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) tin-5-methoxy salicylate complex and an application of the tris (2-methyl-2-phenylpropyl) tin-5-methoxy salicylate complex in preparation of antitumor drugs.

Description

Technical Field

[0001] The present invention relates to a tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate 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, and anti-cancer drug preparation. Therefore, the research on the synthesis, structure, and biological activities of organotin carboxylate complexes has received extensive attention from scientists. Existing research has shown 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 relatively strong anti-cancer activities, ethyl is the second, and methyl has almost no anti-cancer activity. However, since known organotin compounds generally have strong toxicities, their applications are subject to certain limitations. Adjusting the balance between their toxicities and biological activities is an important research direction at present. One effective method currently 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 has shown 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 group tin. Therefore, synthesizing novel large steric hindrance hydrocarbon group tin carboxylate complexes and studying their structures and biological activities have important research significances.

[0003] The bis[tris(2-methyl-2-phenylpropyl)tin] carboxylate disclosed in European Patent EP0177785B1 has stronger biological activity 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 analgesics (aspirin). The latest research shows that salicylic acid has an effect on the treatment of type I diabetic patients with existing 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 hydrocarbyltin compound with biological activity and a salicylic acid ligand with drug activity to synthesize a novel bulky hydrocarbyltin carboxylate compound and study its biological activity.

[0007] Based on the fact that bis[tris(2-methyl-2-phenylpropyl)]tin oxide has been experimentally proven to have good biological activity, 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 5-methoxysalicylic 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-5-methoxysalicylate 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-5-methoxysalicylate complex.

[0010] The third object of the present invention is to provide the application of the above-mentioned tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex in the preparation of anticancer drugs.

[0011] As a tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex according to the first aspect of the present invention, its structural formula (I) is as follows: (I).

[0012] The tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex of the present invention is analyzed by elemental analysis, infrared spectroscopy, nuclear magnetic resonance spectroscopy and X-ray crystal structure analysis, and the results are as follows: Elemental analysis (C 38 H 46 O 4 Sn): Theoretical value: C, 66.58; H, 6.76. Measured value: C, 66.55; H, 6.72.

[0013] IR (KBr, v / cm -1 ): 3055.24 (w), 2954.95 (s), 2920.23 (s), 2856.58 (m), 1741.72 (w), 1639.49 (w), 1589.34 (s), 1489.05 (s), 1444.68 (m), 1413.82 (m), 1377.17 (s), 1296.16 (s), 1259.52 (m), 1236.37 (s), 1203.58 (m), 1130.29 (w), 1074.35 (m), 1035.77 (m), 995.27 (w), 933.55 (w), 873.75 (w), 823.60 (m), 769.60 (s), 702.09 (s), 613.36 (m), 557.43 (m), 464.84 (w).

[0014] 1 H NMR (CDCl 3 , 500 MHz) δ (ppm): 11.30 (s, 1H), 7.32 - 7.28 (m, 7H), 7.22 (t, J J = 1.88 Hz, 3H), 7.12 - 7.10 (m, 6H), 7.04 (dd, J J = 9 Hz, J J = 3 Hz, 1H), 6.91 (d, J J = 9 Hz, 1H), 3.79 (s, 3H), 1.32 - 1.22 (m, 24H).

[0015] 13 C NMR(CDCl 3 , 125 MHz), δ(ppm): 173.36, 155.98, 151.65, 150.71, 128.46, 126.00, 125.26, 122.23, 117.77, 114.91, 113.81, 55.82, 37.88, 37.72 (t, J J = 10.13 Hz), 32.81 (t, J J = 22.25 Hz).

[0016] 119 Sn NMR (CDCl 3, 186 MHz) δ (ppm): 108.68。

[0017] The tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex of the present invention has a crystal structure, and its crystallographic data: The crystal belongs to the orthorhombic system, space group P 2 1 2 1 2 1 , a =0.95616(6) nm, b =1.81404(11) nm, c =2.01623(12) nm, α =90°, β =90°, γ =90°, Z =4, V = 3.4972(4) nm 3 , D c = 1.302 Mg·m -3 , μ (MoKa) = 0.767 mm -1 , F (000) = 1424, 2.02° < θ <25.01°, Crystal size: 0.25 × 0.19 × 0.21 mm, R =0.0191, wR =0.0459。

[0018] The structural feature of the tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate 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-5-methoxysalicylate complex according to the second aspect of the present invention, bis[tris(2-methyl-2-phenylpropyl)]tin oxide, 5-methoxysalicylic 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 allowed to naturally volatilize and crystallize at room temperature to obtain white crystals, which are the tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex.

[0020] In a preferred embodiment of the present invention, the molar ratio of bis[tris(2-methyl-2-phenylpropyl)]tin oxide to 5-methoxysalicylic acid is 1.0:(2.0 - 2.05).

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

[0022] Use of a tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex according to 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 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-5-methoxysalicylate complex of the present invention shows good anti-cancer activity against human lung cancer cells, human cervical cancer cells, human gastric cancer cells, etc. Using it as a raw material to prepare anti-lung cancer, anti-cervical cancer, and anti-gastric cancer drugs, compared with the commonly used platinum-based anti-cancer drugs, the tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the crystal molecular structure diagram of the tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex.

[0026] Figure 2 It is the IR spectrum of the tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex.

[0027] Figure 3 It is for the 1 1H NMR spectrum of the tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex.

[0028] Figure 4 It is for the 13 13C NMR spectrum of the tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex.

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

[0030] Figure 6 It is the TG-DTG curve of the tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex. DETAILED DESCRIPTION OF THE INVENTION

[0031] The present invention will be 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.

[0032] Example 1: Preparation of tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex: 1.0537 g (1.0 mmol) of bis[tris(2-methyl-2-phenylpropyl)]tin oxide, 0.3374 g (2.0 mmol) of 5-methoxysalicylic 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 volatilize and crystallize at room temperature to obtain white crystals, which were tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex. Yield: 69%, melting point: 96 - 98 °C.

[0033] Elemental analysis (C 38 H 46 O 4 Sn): Theoretical values: C, 66.58; H, 6.76. Measured values: C, 66.55; H, 6.72.

[0034] IR (KBr, v / cm -1 ): 3055.24 (w), 2954.95 (s), 2920.23 (s), 2856.58 (m), 1741.72 (w), 1639.49 (w), 1589.34 (s), 1489.05 (s), 1444.68 (m), 1413.82 (m), 1377.17 (s), 1296.16 (s), 1259.52 (m), 1236.37 (s), 1203.58 (m), 1130.29 (w), 1074.35 (m), 1035.77 (m), 995.27 (w), 933.55 (w), 873.75 (w), 823.60 (m), 769.60 (s), 702.09 (s), 613.36 (m), 557.43 (m), 464.84 (w).

[0035] 1 H NMR (CDCl 3 , 500 MHz) δ(ppm): 11.30 (s, 1H), 7.32 - 7.28 (m, 7H), 7.22 (t, J J = 1.88 Hz, 3H), 7.12 - 7.10 (m, 6H), 7.04 (dd, J J = 9 Hz, J J = 3 Hz, 1H), 6.91 (d, J J = 9 Hz, 1H), 3.79 (s, 3H), 1.32 - 1.22 (m, 24H).

[0036] 13 C NMR(CDCl 3 , 125 MHz), δ(ppm): 173.36, 155.98, 151.65, 150.71, 128.46, 126.00, 125.26, 122.23, 117.77, 114.91, 113.81, 55.82, 37.88, 37.72(t, J J = 10.13 Hz), 32.81 (t, J J = 22.25 Hz).

[0037] 119 Sn NMR (CDCl 3 , 186 MHz) δ (ppm): 108.68.

[0038] Its crystallographic data: The crystal belongs to the orthorhombic system, space group P 2 1 2 1 2 1 , a a = 0.95616(6) nm, b b = 1.81404(11) nm, c c = 2.01623(12) nm, α α = 90°, β β = 90°, γ γ = 90°, Z Z = 4, V = 3.4972(4) nm 3 , D ρc = 1.302 Mg·m -3 , μ μ(MoKa) = 0.767 mm -1 , F F(000) = 1424, 2.02° < θ< 25.01°, crystal size: 0.25 × 0.19 × 0.21 mm, R = 0.0191, wR = 0.0459.

[0039] Example 2: Preparation of tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex: Add 1.0541 g (1.0 mmol) of bis[tris(2-methyl-2-phenylpropyl)]tin oxide, 0.3711 g (2.1 mmol) of 5-methoxysalicylic acid, and 15 mL of anhydrous methanol as the solvent into the microwave reaction vessel in sequence. Under an air atmosphere, carry out microwave reaction at a radiation power of 800 W and a temperature of 100 °C for 60 min. After the reaction, cool naturally, filter, and let the solvent evaporate and crystallize naturally at room temperature to obtain white crystals, which are tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex. Yield: 70%, melting point: 96 – 98 °C.

[0040] Elemental analysis (C 38 H 46 O 4 Sn): Theoretical values: C, 66.58; H, 6.76. Measured values: C, 66.55; H, 6.72.

[0041] IR (KBr, v / cm -1 ): 3055.24 (w), 2954.95 (s), 2920.23 (s), 2856.58 (m), 1741.72 (w), 1639.49 (w), 1589.34 (s), 1489.05 (s), 1444.68 (m), 1413.82 (m), 1377.17 (s), 1296.16 (s), 1259.52 (m), 1236.37 (s), 1203.58 (m), 1130.29 (w), 1074.35 (m), 1035.77 (m), 995.27 (w), 933.55 (w), 873.75 (w), 823.60 (m), 769.60 (s), 702.09 (s), 613.36 (m), 557.43 (m), 464.84 (w).

[0042] 1 H NMR (CDCl 3 , 500 MHz) δ(ppm): 11.30 (s, 1H), 7.32 - 7.28 (m, 7H), 7.22 (t, J J = 1.88 Hz, 3H), 7.12 - 7.10 (m, 6H), 7.04 (dd, J J = 9 Hz, J J = 3 Hz, 1H), 6.91 (d, J J = 9 Hz, 1H), 3.79 (s, 3H), 1.32 - 1.22 (m, 24H).

[0043] 13 C NMR(CDCl 3 , 125 MHz), δ(ppm): 173.36, 155.98, 151.65, 150.71, 128.46, 126.00, 125.26, 122.23, 117.77, 114.91, 113.81, 55.82, 37.88, 37.72(t, J J = 10.13 Hz), 32.81 (t, J J = 22.25 Hz).

[0044] 119 Sn NMR (CDCl 3 , 186 MHz) δ (ppm): 108.68.

[0045] Its crystallographic data: The crystal belongs to the orthorhombic system, space group P 2 1 2 1 2 1 , a a = 0.95616(6) nm, b b = 1.81404(11) nm, c c = 2.01623(12) nm, α α = 90°, β β = 90°, γ γ = 90°, Z Z = 4, V = 3.4972(4) nm 3 , D ρc = 1.302 Mg·m -3 , μ μ(MoKa) = 0.767 mm -1 , F F(000) = 1424, 2.02° < θ< 25.01°, crystal size: 0.25 × 0.19 × 0.21 mm, R = 0.0191, wR = 0.0459.

[0046] Example 3: Preparation of tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex: Add 1.0534 g (1.0 mmol) of bis[tris(2-methyl-2-phenylpropyl)]tin oxide, 0.1676 g (1.0 mmol) of 5-methoxysalicylic acid, and 12 mL of anhydrous methanol as the solvent into the microwave reaction vessel in sequence. Under an air atmosphere, carry out microwave reaction at a radiation power of 800 W and a temperature of 100 °C for 120 min. After the reaction is completed, cool naturally, filter, and let the solvent naturally volatilize and crystallize at room temperature to obtain white crystals, which are tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex. Yield: 70%, melting point: 96 – 98 °C.

[0047] Elemental analysis (C 38 H 46 O 4 Sn): Theoretical values: C, 66.58; H, 6.76. Measured values: C, 66.55; H, 6.72.

[0048] IR (KBr, v / cm -1 ): 3055.24 (w), 2954.95 (s), 2920.23 (s), 2856.58 (m), 1741.72 (w), 1639.49 (w), 1589.34 (s), 1489.05 (s), 1444.68 (m), 1413.82 (m), 1377.17 (s), 1296.16 (s), 1259.52 (m), 1236.37 (s), 1203.58 (m), 1130.29 (w), 1074.35 (m), 1035.77 (m), 995.27 (w), 933.55 (w), 873.75 (w), 823.60 (m), 769.60 (s), 702.09 (s), 613.36 (m), 557.43 (m), 464.84 (w).

[0049] 1 H NMR (CDCl 3 , 500 MHz) δ(ppm): 11.30 (s, 1H), 7.32 - 7.28 (m, 7H), 7.22 (t, J J = 1.88 Hz, 3H), 7.12 - 7.10 (m, 6H), 7.04 (dd, J J = 9 Hz, J J = 3 Hz, 1H), 6.91 (d, J J = 9 Hz, 1H), 3.79 (s, 3H), 1.32 - 1.22 (m, 24H).

[0050] 13 C NMR(CDCl 3 , 125 MHz), δ(ppm): 173.36, 155.98, 151.65, 150.71, 128.46, 126.00, 125.26, 122.23, 117.77, 114.91, 113.81, 55.82, 37.88, 37.72(t, J J = 10.13 Hz), 32.81 (t, J J = 22.25 Hz).

[0051] 119 Sn NMR (CDCl 3 , 186 MHz) δ (ppm): 108.68.

[0052] Its crystallographic data: The crystal belongs to the orthorhombic system, space group P 2 1 2 1 2 1 , a a = 0.95616(6) nm, b b = 1.81404(11) nm, c c = 2.01623(12) nm, α α = 90°, β β = 90°, γ γ = 90°, Z Z = 4, V = 3.4972(4) nm 3 , D ρc = 1.302 Mg·m -3 , μ μ(MoKa) = 0.767 mm -1 , F F(000) = 1424, 2.02° < θ< 25.01°, crystal size: 0.25×0.19×0.21 mm, R = 0.0191, wR = 0.0459.

[0053] Example 4: Preparation of tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex: Sequentially add 2.1073 g (2.0 mmol) of bis[tris(2-methyl-2-phenylpropyl)]tin oxide, 0.6734 g (4.0 mmol) of 5-methoxysalicylic acid, and 25 mL of anhydrous methanol as the solvent into a microwave reaction vessel. Under an air atmosphere, carry out a microwave reaction at a radiation power of 800 W and a temperature of 100 °C for 60 min. After the reaction is completed, let it cool naturally, filter, and let the solvent naturally volatilize and crystallize at room temperature to obtain white crystals, which are tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex. Yield: 69%, melting point: 96 – 98 °C.

[0054] Elemental analysis (C 38 H 46 O 4 Sn): Theoretical values: C, 66.58; H, 6.76. Measured values: C, 66.55; H, 6.72.

[0055] IR (KBr, v / cm -1 ): 3055.24 (w), 2954.95 (s), 2920.23 (s), 2856.58 (m), 1741.72 (w), 1639.49 (w), 1589.34 (s), 1489.05 (s), 1444.68 (m), 1413.82 (m), 1377.17 (s), 1296.16 (s), 1259.52 (m), 1236.37 (s), 1203.58 (m), 1130.29 (w), 1074.35 (m), 1035.77 (m), 995.27 (w), 933.55 (w), 873.75 (w), 823.60 (m), 769.60 (s), 702.09 (s), 613.36 (m), 557.43 (m), 464.84 (w).

[0056] 1 H NMR (CDCl 3 , 500 MHz) δ(ppm): 11.30 (s, 1H), 7.32 - 7.28 (m, 7H), 7.22 (t, J J = 1.88 Hz, 3H), 7.12 - 7.10 (m, 6H), 7.04 (dd, J J = 9 Hz, J J = 3 Hz, 1H), 6.91 (d, J J = 9 Hz, 1H), 3.79 (s, 3H), 1.32 - 1.22 (m, 24H).

[0057] 13 C NMR(CDCl 3 , 125 MHz), δ(ppm): 173.36, 155.98, 151.65, 150.71, 128.46, 126.00, 125.26, 122.23, 117.77, 114.91, 113.81, 55.82, 37.88, 37.72(t, J J = 10.13 Hz), 32.81 (t, J J = 22.25 Hz).

[0058] 119 Sn NMR (CDCl 3 , 186 MHz) δ (ppm): 108.68.

[0059] Its crystallographic data: The crystal belongs to the orthorhombic system, space group P 2 1 2 1 2 1 , a a = 0.95616(6) nm, b b = 1.81404(11) nm, c c = 2.01623(12) nm, α α = 90°, β β = 90°, γ γ = 90°, Z Z = 4, V = 3.4972(4) nm 3 , D ρc = 1.302 Mg·m -3 , μ μ(MoKa) = 0.767 mm -1 , F F(000) = 1424, 2.02° < θ< 25.01°, crystal size: 0.25 × 0.19 × 0.21 mm, R = 0.0191, wR = 0.0459.

[0060] Example 5: Preparation of tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex: Sequentially add 2.1073 g (2.0 mmol) of bis[tris(2-methyl-2-phenylpropyl)]tin oxide, 0.6898 g (4.1 mmol) of 5-methoxysalicylic acid, and 25 mL of anhydrous methanol as the solvent into the microwave reaction vessel. Under an air atmosphere, carry out microwave reaction at a radiation power of 800 W and a temperature of 100 °C for 90 min. After the reaction is completed, cool naturally, filter, and let the solvent naturally volatilize and crystallize at room temperature to obtain white crystals, which are tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex. Yield: 71%, melting point: 96 – 98 °C.

[0061] Elemental analysis (C 38 H 46 O 4 Sn): Theoretical values: C, 66.58; H, 6.76. Measured values: C, 66.55; H, 6.72.

[0062] IR (KBr, v / cm -1 ): 3055.24 (w), 2954.95 (s), 2920.23 (s), 2856.58 (m), 1741.72 (w), 1639.49 (w), 1589.34 (s), 1489.05 (s), 1444.68 (m), 1413.82 (m), 1377.17 (s), 1296.16 (s), 1259.52 (m), 1236.37 (s), 1203.58 (m), 1130.29 (w), 1074.35 (m), 1035.77 (m), 995.27 (w), 933.55 (w), 873.75 (w), 823.60 (m), 769.60 (s), 702.09 (s), 613.36 (m), 557.43 (m), 464.84 (w).

[0063] 1 H NMR (CDCl 3 , 500 MHz) δ(ppm): 11.30 (s, 1H), 7.32 - 7.28 (m, 7H), 7.22 (t, J J = 1.88 Hz, 3H), 7.12 - 7.10 (m, 6H), 7.04 (dd, J J = 9 Hz, J J = 3 Hz, 1H), 6.91 (d, J J = 9 Hz, 1H), 3.79 (s, 3H), 1.32 - 1.22 (m, 24H).

[0064] 13 C NMR(CDCl 3 , 125 MHz), δ(ppm): 173.36, 155.98, 151.65, 150.71, 128.46, 126.00, 125.26, 122.23, 117.77, 114.91, 113.81, 55.82, 37.88, 37.72(t, J J = 10.13 Hz), 32.81 (t, J J = 22.25 Hz).

[0065] 119 Sn NMR (CDCl 3 , 186 MHz) δ (ppm): 108.68.

[0066] Its crystallographic data: The crystal belongs to the orthorhombic system, space group P 2 1 2 1 2 1 , a a = 0.95616(6) nm, b b = 1.81404(11) nm, c c = 2.01623(12) nm, α α = 90°, β β = 90°, γ γ = 90°, Z Z = 4, V = 3.4972(4) nm 3 , D ρc = 1.302 Mg·m -3 , μ μ(MoKa) = 0.767 mm -1 , F F(000) = 1424, 2.02° < θ< 25.01°, crystal size: 0.25×0.19×0.21 mm, R = 0.0191, wR = 0.0459.

[0067] Example 6: Preparation of tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex: Sequentially add 3.1594 g (3.0 mmol) of bis[tris(2-methyl-2-phenylpropyl)]tin oxide, 1.0094 g (6.0 mmol) of 5-methoxysalicylic acid, and 30 mL of anhydrous methanol as the solvent into a microwave reaction vessel. Under an air atmosphere, perform a microwave reaction at a radiation power of 800 W and a temperature of 100 °C for 120 min. After the reaction, cool naturally, filter, and allow the solvent to naturally volatilize and crystallize at room temperature to obtain white crystals, which are tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex. Yield: 72%, melting point: 96 – 98 °C.

[0068] Elemental analysis (C 38 H 46 O 4 Sn): Theoretical values: C, 66.58; H, 6.76. Measured values: C, 66.55; H, 6.72.

[0069] IR (KBr, v / cm -1 ): 3055.24 (w), 2954.95 (s), 2920.23 (s), 2856.58 (m), 1741.72 (w), 1639.49 (w), 1589.34 (s), 1489.05 (s), 1444.68 (m), 1413.82 (m), 1377.17 (s), 1296.16 (s), 1259.52 (m), 1236.37 (s), 1203.58 (m), 1130.29 (w), 1074.35 (m), 1035.77 (m), 995.27 (w), 933.55 (w), 873.75 (w), 823.60 (m), 769.60 (s), 702.09 (s), 613.36 (m), 557.43 (m), 464.84 (w).

[0070] 1 H NMR (CDCl 3 , 500 MHz) δ(ppm): 11.30 (s, 1H), 7.32 - 7.28 (m, 7H), 7.22 (t, J J = 1.88 Hz, 3H), 7.12 - 7.10 (m, 6H), 7.04 (dd, J J = 9 Hz, J J = 3 Hz, 1H), 6.91 (d, J J = 9 Hz, 1H), 3.79 (s, 3H), 1.32 - 1.22 (m, 24H).

[0071] 13 C NMR(CDCl 3 , 125 MHz), δ(ppm): 173.36, 155.98, 151.65, 150.71, 128.46, 126.00, 125.26, 122.23, 117.77, 114.91, 113.81, 55.82, 37.88, 37.72(t, J J = 10.13 Hz), 32.81 (t, J J = 22.25 Hz).

[0072] 119 Sn NMR (CDCl 3 , 186 MHz) δ (ppm): 108.68.

[0073] Its crystallographic data: The crystal belongs to the orthorhombic system, space group P 2 1 2 1 2 1 , a a = 0.95616(6) nm, b b = 1.81404(11) nm, c c = 2.01623(12) nm, α α = 90°, β β = 90°, γ γ = 90°, Z Z = 4, V = 3.4972(4) nm 3 , D ρc = 1.302 Mg·m -3 , μ μ(MoKa) = 0.767 mm -1 , F F(000) = 1424, 2.02° < θ< 25.01°, crystal size: 0.25 × 0.19 × 0.21 mm, R = 0.0191, wR = 0.0459.

[0074] Test example: For the tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex of the present invention, its in vitro anti-cancer activity was determined by the MTT assay method.

[0075] 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 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.

[0076] The MTT method was used to determine the inhibitory activities of the tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex prepared in Example 1 against human lung cancer cells (A549), human cervical cancer cells (Hela), and human gastric cancer cells (HGC-27).

[0077] Cell lines and culture systems: The 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.

[0078] Test procedure: 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 the culture medium and cells were added, without the test drug), and a blank group (only the 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. After culturing for 48 h, 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.

[0079] Data processing: The data processing uses the GraAr Pad Prism version 5.0 program, and the complex IC 50 is obtained by fitting through the non-linear regression model with S-shaped dose response in the program.

[0080] The human lung cancer cell line (A549), human cervical cancer cell line (Hela), and human gastric cancer cell line (HGC-27) were analyzed by the MTT assay to determine their IC 50 values. The results are shown in Table 1. The conclusion is: As can be seen from the data in the table, the tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate 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.

[0081] Table 1 In vitro activity test data of the tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate 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]]> 0.4648 0.4134 0.3116

[0082] The test method for the anti-cancer activities of the tris(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complexes prepared in the remaining examples against human lung cancer cells (A549), human cervical cancer cells (Hela), and human gastric cancer cells (HGC-27) was the same as that in the test example, and the test results were basically the same as those in Table 1.

Claims

1. A tri(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex, which is a complex of the following structural formula (I): (I)。 2. The tri(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex as claimed in claim 1, wherein the infrared spectrum data are as follows: FT-IR (KBr, v / cm -1 ): 3055.24 (w), 2954.95 (s), 2920.23 (s), 2856.58 (m), 1741.72 (w), 1639.49 (w), 1589.34 (s), 1489.05 (s), 1444.68 (m), 1413.82 (m), 1377.17 (s), 1296.16 (s), 1259.52 (m), 1236.37 (s), 1203.58 (m), 1130.29 (w), 1074.35 (m), 1035.77 (m), 995.27 (w), 933.55 (w), 873.75 (w), 823.60 (m), 769.60 (s), 702.09 (s), 613.36 (m), 557.43 (m), 464.84 (w); Its NMR spectrum data: 1 H NMR (CDCl3, 500 MHz) δ (ppm): 11.30 (s, 1H), 7.32 - 7.28 (m, 7H), 7.22 (t, J = 1.88 Hz,3H), 7.12 - 7.10 (m, 6H), 7.04 (dd, J = 9 Hz, J = 3 Hz,1H), 6.91 (d, J = 9 Hz, 1H), 3.79 (s, 3H), 1.32 - 1.22 (m, 24H); 13 C NMR (CDCl3, 125 MHz) δ (ppm): 173.36, 155.98, 151.65, 150.71, 128.46, 126.00,125.26, 122.23, 117.77, 114.91, 113.81, 55.82, 37.88, 37.72 (t, J = 10.13Hz), 32.81 (t, J = 22.25 Hz); 119 Sn NMR (CDCl3, 186 MHz) δ (ppm): 108.

68.

3. The tri(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex according to claim 1, wherein The tri(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex is a crystal structure, and its crystallographic data are as follows: orthorhombic system, space group P 212121, a =0.95616(6) nm, b =1.81404(11) nm, c =2.01623(12) nm, α =90°, β =90°, γ =90°, Z =4,V=3.4972(4) 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-5-methoxysalicylate complex according to claim 1, characterized in that: Add bis(tri(2-methyl-2-phenylpropyl))tin oxide, 5-methoxysalicylic 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-5-methoxysalicylate 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 and 5-methoxysalicylic 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. The tri(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex of claim 1 has a certain thermal stability range and can stably exist below 215°C.

8. Use of the tri(2-methyl-2-phenylpropyl)tin-5-methoxysalicylate complex of claim 1 in the preparation of anticancer drugs.

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

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