Furo[2,3-h] chromene compound and use for preventing platelet aggregation
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A platelet aggregation and compound technology, applied in the field of medicine, can solve the problems of poor stability and low content of natural flavonoids, and achieve the effect of a simple synthesis method
Inactive Publication Date: 2009-07-22
SHENYANG PHARMA UNIVERSITY
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[0006] However, the content of natural flavonoids is low, and the stability of 4-chromanone Mannich bases is poor. We modified the structures of flavonoids and 4-chromanones, designed and synthesized a series of furo[2,3- h] chromene compounds to overcome the above-mentioned shortcomings of natural flavonoids and 4-chromanones
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Embodiment 1
[0022] Example 1: 8-benzoyl-9-methylfuro[2,3-h]-4-chromanone
[0023] Mix 3mmol 7-hydroxy-8-acetyl-4-chromanone, 3mmol α-chloroacetophenone, 30mmol anhydrous potassium carbonate, 50mL dry acetone, and stir and reflux for 7 hours. After cooling, suction filtration, rotary evaporation to evaporate the acetone, 30 mL of ethyl acetate was added, followed by washing with 10 mL of water and 10 mL of saturated sodium chloride aqueous solution, drying, and rotary evaporation to remove ethyl acetate. Column chromatography separation (oil ether: ethyl acetate = 8:1) to obtain a white solid. The yield was 42%, MS m / z(M): 306.31. 1 H-NMR(d 6 -DMSO): δ 1.94 (3H, s), 2.97 (2H, t), 4.13 (2H, t), 7.06 (1H, d, J = 8.88 Hz), 7.45-7.54 (3H, m), 7.71 (1H , D, J = 8.91 Hz), 7.81 (2H, m).
Embodiment 2
[0024] Example 2: 8-(4-Methylbenzoyl)-9-methylfuro[2,3-h]-4-chromanone
[0025] According to the method of Example 1, reacted with 7-hydroxy-8-acetyl-4-chromanone and 4-methyl-α-chloroacetophenone to obtain a white solid with a yield of 38%. MS m / z(M): 320.34. 1 H-NMR(d 6 -DMSO): δ 1.95 (3H, s), 2.35 (3H, s), 2.97 (2H, t), 4.13 (2H, t), 7.06 (1H, d, J = 8.92 Hz), 7.25 (2H, dd) , J=1.80, 8.88 Hz), 7.69-7.71 (3H, m).
Embodiment 3
[0026] Example 3: 8-(4-Chlorobenzoyl)-9-methylfuro[2,3-h]-4-chromanone
[0027] According to the method of Example 1, reacted with 7-hydroxy-8-acetyl-4-chromanone and 4-chloro-α-chloroacetophenone to obtain a white solid with a yield of 32%. MS m / z(M): 340.76. 1 H-NMR(d 6 -DMSO): δ 1.94 (3H, s), 2.97 (2H, t), 4.13 (2H, t), 7.06 (1H, d, J = 8.91 Hz), 7.46 (2H, dd, J = 1.80, 8.88 Hz ), 7.71-7.75 (3H, m).
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Abstract
The invention pertains to the field of medical technology and relates to a furo [2, 3-h] chromene compound and an application thereof for inhibiting platelet aggregation; the furo [2, 3-h] chromene compound, pharmaceutically-acceptable salt, or stereo-isomers and pre-drugs of the furo [2, 3-h] chromene compound, as well as pharmaceutical compatibility acceptable carriers or diluents of the furo [2, 3-h] chromene compound can be used as platelet aggregation inhibitors. The structural formula of the furo [2, 3-h] chromene compound is as shown above, wherein, X can be chosen from CH2 or C=O, R1 can be independently chosen from H or a substituted or un-substituted aromatic base, R2 can be independently chosen from H or a substituted or un-substituted aromatic base, and R can be independently chosen from H, alkyl group with one to four carbon atoms, chlorine, bromine, fluorin, methoxyl, nitryl or hydroxyl. The furo [2, 3-h] chromene compound has simple synthetic method, adapts to industrialized production and is more stable compared with natural analogues. Shown by biological activity assay, the furo [2, 3-h] chromene compound has antithrombin activity and is a platelet aggregation inhibiting drug.
Description
Technical field [0001] The invention belongs to the technical field of medicine, and relates to furo[2,3-h]chromene compounds and their use in anti-platelet aggregation. Background technique [0002] Clinical studies have shown that common clinical cardiovascular and cerebrovascular diseases such as hypertension, diabetes, angina pectoris, myocardial infarction, cerebral infarction and cerebral hemorrhage are all related to changes in platelet function and abnormal hemorheology (Tianjin Medicine, 1992, 20 (11): 684). Therefore, preventing platelet aggregation is of great significance. [0003] Platelets are produced by the lysis of mature megakaryocytes in the bone marrow. The newly formed platelets are large in size, have the ability to synthesize proteins, have strong adhesion, are prone to aggregation and release reactions, and have hemostatic function. It is currently believed that the physiological activities of platelets mainly include adhesion, aggregation and release reac...
Claims
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