Juglone derivative and application thereof
A technology of juglone and derivatives, which is applied in the field of juglone and quinone compounds, can solve the problems that juglone has not yet been retrieved, and has not yet been retrieved, and achieve the effect of inhibiting tumor growth and metastasis, and inhibiting tumor angiogenesis
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Embodiment 1
[0064] 1. Separation of 2-ethoxy-6-acetyl-7-methyl-juglone
[0065] Take Polygonum cuspidatum root powder (400g), add petroleum ether (PE, 1000mL×3) ultrasonic extraction (40kHz, 45°C, 50% power, 30min), ultrasonic extraction solution was filtered with Buchner funnel to obtain filtrate, and the filtrate was obtained by rotating Evaporator concentrated and weighed to obtain the PE extract of Polygonum cuspidatum root (2.3g); the residue was added to EtOAc (1000mL×3), MeOH (1000mL×3), H 2 O (1000mL×2) was ultrasonically extracted sequentially, concentrated and dried to obtain the extract PE crude extract (2.3g), EtOAc crude extract (1.3g), MeOH crude extract (5.8g) and H 2 O crude extract (14.2g, four kinds of extracts of Polygonum cuspidatum root were used to test the activity of HepG2 cells stably transfected with STAT3 reporter. The test results showed that the inhibition rate of EtOAc crude extract on STAT3 regulation was 82.3 at 40 μg / mL. %. Use high performance liquid pha...
Embodiment 2
[0080] Polygonum cuspidatum rhizome coarse powder 9.5kg, added ethyl acetate (EtOAc) and extracted in Buchi automatic extractor under argon protection at 50°C (6L×4, 4x4min, 100pa), concentrated under reduced pressure to obtain Polygonum cuspidatum EtOAc (316g) extract . Take Polygonum cuspidatum EtOAc extract 15g, through silica gel column chromatography, use the mobile phase of petroleum ether-ethyl acetate with a volume ratio of 100:0, 98:2, 95:5, 90:10 and 80:20 to elute successively , collected the eluent of petroleum ether:ethyl acetate=98:2, and obtained 1.6g of chemical components; the chemical components (1.6g) were separated by Sephadex LH20 column, and the elution mobile phase was 100% ethanol, and the elution Liquid chromatography conditions are petroleum ether: ethyl acetate = 7:3 thin-layer chromatography, recover the eluent of thin-layer chromatography ultraviolet 356nm color red spots, concentrate under reduced pressure to obtain 0.34g of chemical microcomponen...
Embodiment 3
[0082] An appropriate amount of Polygonum cuspidatum sample was crushed and passed through a 24-mesh sieve. Using the yield of the extract as an indicator, multiple extraction condition parameters were compared to determine the supercritical CO 2 The optimal process conditions for extracting volatile components of pandanus powder are: extraction kettle pressure 15MPa, extraction temperature 45°C, desorption pressure 6.4MPa, desorption temperature 50°C, CO 2 The flow rate is 32L / h, the extraction time is 2h, and a small amount of ethanol is added as an entrainer. Get 2000g of Polygonum cuspidatum root powder and put it into the extraction kettle, heat the extraction kettle and the analysis kettle, cool the storage tank, when the temperature reaches the preset pressure, and adjust the CO 2 Flow rate, constant temperature and constant pressure circulation extraction, the extract was collected from the separation tank to obtain about 20mL of tan liquid, and the ethanol was removed...
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