Versulin derivative and its use in treatment of diabetes and its complication
A kind of technology of apigenin and derivatives, applied in the field of apigenin derivatives
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Embodiment 1
[0024] Example 1. Extraction and separation of apigenin derivatives
[0025] The 95% alcohol extract of fenugreek seeds is sequentially extracted with petroleum ether, ethyl acetate and n-butanol to obtain n-butanol extraction parts. The extraction part is first subjected to silica gel column chromatography, then separated by AB-8 macroporous resin column chromatography and polyamide column chromatography, and finally purified by ODS preparative chromatography to obtain 4 apigenin derivatives, which are as follows:
[0026] Compound 1: 6-C-D-xylose-8-C-D-galactosyl-apigenin glycoside, which has the following structure:
[0027]
[0028] Compound 2: 6-D-D-galactose-8-D-D-glucose-pigenin glycoside;
[0029] Compound 3: 6-C-D-arabinose-8-C D-galactosyl-apigenin glycoside; and
[0030] Compound 4: 6,8-di-D-galactosyl-apigenin glycoside.
[0031] Compound 1 is a yellow powder. HCl-Mg reaction was positive, phenol-H 2 SO 4 The reaction was positive. according to 1 H-NMR a...
Embodiment 2
[0038] Embodiment 2. Biological activity experiment
[0039] Effect of compound 1 on blood sugar in diabetic mice
[0040]Fifty Kunming mice were randomly divided into normal control group (10 mice) and to-be-made model group (40 mice). After fasting for 24 hours (without water), the mice in the model group to be established were rapidly injected with alloxan physiological saline solution at a dose of 60 mg / kg through the tail vein. After 72 hours, blood was taken from the tip of the tail to measure the blood glucose of the mice. The mice with a blood glucose value > 20.0mmol / L were selected as diabetic mice, and were divided into model group (10 mice), compound I group (50mg / kg, 10 mice), and The gliclazide positive drug group (80 mg / kg, 10 rats) was administered by intragastric administration for 18 consecutive days, and the blood glucose was measured on the 7th and 18th days, respectively. The data are represented by X±SD, and the difference between the means of the two g...
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