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Preparation method for ebracteolatain A and application of ebracteolatain A in preparation of breast cancer medicine

A technology of euphorin and breast cancer, which is applied in the field of medicine, can solve the problems of no pharmacological activity research reports, etc., and achieve the effect of enhanced anti-breast cancer cell activity, high yield, and good practical significance

Inactive Publication Date: 2017-04-26
SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Ebracteolatain A (ebracteolatain A), diphenylmethane compound, 3,3'-diacetyl-2,4'-dimethoxy-2',4,6,6'-tetrahydroxy-5 '-Methyldiphenylmethane (Deng Bin, Mu Shuzhen, Hao Xiaojiang. Chemical constituents of Euphorbia lunata. China Natural Medicine. 2010,8(3):183-185), there is no research on pharmacological activity to report

Method used

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  • Preparation method for ebracteolatain A and application of ebracteolatain A in preparation of breast cancer medicine
  • Preparation method for ebracteolatain A and application of ebracteolatain A in preparation of breast cancer medicine
  • Preparation method for ebracteolatain A and application of ebracteolatain A in preparation of breast cancer medicine

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Embodiment 1

[0026] Embodiment 1: the method for preparing monomer compound from Euphorbia chamaejasma

[0027] 30kg of dried Euphorbia chamaejasma, crushed, soaked in 80% (ethanol: water 80:20) ethanol reflux extraction twice, each time for 2 hours, the amount of solvent was 180L and 150L respectively. Combine the extracts, filter while hot, combine and concentrate until no ethanol remains, and concentrate the volume to 8L. Take 2L of the concentrated solution and add 1L of water to dilute it, then extract 3 times with petroleum ether, ethyl acetate and n-butanol in sequence, each time the extraction solvent is 3L, and recover the solvent under reduced pressure to obtain 60g of petroleum ether and 160g of ethyl acetate , 20g of n-butanol.

[0028] The ethyl acetate part was passed through a normal phase silica gel column and eluted with petroleum ether: ethyl acetate 100:1, 50:1, 20:1, 15:1, 10:1, 5:1, 1:1 to obtain Fr. 1-Fr. 7.

[0029] Take 12g of Fr.2 to pass through the normal phas...

Embodiment 2

[0050] Embodiment 2: Anti-breast cancer cell experiment in vitro

[0051] MTT method was used to evaluate cytotoxicity, and 6 types of breast cancer cells were selected for research, namely triple negative breast cancer MDA-MB-231, Sum149, LuminalA type MCF-7, LuminalB type ZR-75-1, Her 2 positive type SKBr3, BT474. Paclitaxel was used as the positive control drug. Adjust the above six kinds of breast cancer cell density to 5 × 10 4 cells / ml, inoculate into 96-well culture plate, inoculate 100 μL cell suspension in each well, place at 37°C, 5% CO 2 Cultivate overnight in an incubator, observe that the cells adhere to the wall and grow well, and then set up a positive control group, a tumor cell control group and an experimental group with different concentrations of drugs. The experimental group added 8 sample solutions with gradient concentrations. The concentration of compound 1 and 2 mother solutions was 5mM, and the concentration of paclitaxel mother solution was 3.5mM....

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Abstract

The invention belongs to the medical technical field, and specifically relates to a preparation method for ebracteolatain A and an application of the ebracteolatain A in preparation of a breast cancer medicine. An extracting process comprises the steps of extracting euphorbia fischeriana steud medical material powder by petroleum ether, ethyl acetate and n-butyl alcohol, and next, performing separation the abovementioned parts by a silica gel column chromatography. The preparation method is simple, quick and convenient, the reproducibility is high, and the extracting purity is high; in the obtained compound, a diphenylmethane compound has relatively high breast cancer cell viability resistance while 2, 4-dihydroxyl-6-methoxyl-3-methyl-1-acetyl benzene has no obvious breast cancer cell viability resistance; and therefore, the compound with the diphenylmethane mother nucleus can obviously suppress the breast cancer cell viability, and the compound has certain structure-function relationship.

Description

technical field [0001] The invention belongs to the technical field of medicine, and specifically screens out active ingredients of anti-breast cancer cells from natural products. Background technique [0002] Breast cancer is one of the most common malignant tumors in women, and its high morbidity and rising mortality have always been a disease of global concern. According to the 2011 global cancer statistics report, the number of new cases of breast cancer in the world reached 1.384 million in 2008, accounting for 23.0% of the total number of new cases of malignant tumors, while the number of deaths was as high as 459,000. The age-standardized incidence rate of world population in some more developed countries It is 66.4 / 100,000, while it is 27.3 / 100,000 in developing countries. The incidence of female breast cancer in China ranks first in the incidence of female cancer, and its mortality rate ranks sixth in female cancer mortality. Since the current incidence of breast ...

Claims

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Application Information

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IPC IPC(8): A61K31/12A61P35/00C07C45/78C07C49/84
CPCA61K31/12C07C45/78C07C49/84
Inventor 赵亮王莹曹青青李洋李云青孙峰峰柴逸峰朱臻宇洪战英
Owner SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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