Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Flavonoids and their preparation methods and applications

A technology of flavonoids and extracts, applied in cosmetic preparations, cosmetics, organic chemistry, etc., can solve the problem of limited types of flavonoids, and achieve excellent whitening and anti-inflammatory effects, novel structure, and unique effects.

Active Publication Date: 2017-01-18
完美(广东)日用品有限公司 +2
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that the various flavonoids isolated from Lychee Grass usually show good pharmaceutical activity, but the types of flavonoids isolated from Lychee Grass are very limited in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flavonoids and their preparation methods and applications
  • Flavonoids and their preparation methods and applications
  • Flavonoids and their preparation methods and applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The preparation method of flavonoid novel compound Ia described in the present embodiment comprises the steps:

[0042] (1) Weigh 10 parts by weight of the whole herb of Litchi, crush it and add 50 parts by weight of an aqueous solution of 95v% ethanol, stir well, soak for 30 days, collect the percolate, and concentrate in vacuum to obtain the extract of Litchi;

[0043] (2) The lychee grass extract is mixed with silica gel and diatomaceous earth with a mass ratio of 1:1, and loaded onto a silica gel column, using 3 times the column volume of petroleum ether and 3 times the column volume of acetic acid Ethyl is eluted as an eluent, and the ethyl acetate eluate is collected and concentrated to obtain 0.21 parts by weight of the first medicinal extract;

[0044] (3) Carry out silica gel column chromatography separation to the first medicinal extract, successively use 10 times of column volume of dichloromethane, 10 times of column volume of the mixed solvent of dichlorome...

Embodiment 2

[0057] The preparation method of flavonoid novel compound Ia described in the present embodiment comprises the steps:

[0058] (1) Weigh 10 parts by weight of the whole herb of Lychee Grass, add 300 parts by weight of 50v% ethanol aqueous solution after crushing, stir well, soak for 17.5 days, collect the percolate, and concentrate in vacuum to obtain the Lychee Grass extract;

[0059] (2) The lychee grass extract is mixed with silica gel and diatomaceous earth with a mass ratio of 3:1, and loaded onto a silica gel column, using petroleum ether of 10 times column volume and acetic acid of 10 times column volume successively Ethyl is eluted as an eluent, and the ethyl acetate eluate is collected and concentrated to obtain 0.26 parts by weight of the first medicinal extract;

[0060] (3) Carry out silica gel column chromatography separation to the first medicinal extract, use 3 times of column volumes of dichloromethane, 3 times of column volumes of the mixed solvent of dichloro...

Embodiment 3

[0064] The preparation method of flavonoid novel compound Ia described in the present embodiment comprises the steps:

[0065] (1) Weigh 10 parts by weight of the whole herb of Lychee Herb, add 200 parts by weight of absolute ethanol after crushing, stir well, soak for 18 days, collect the percolation liquid, and concentrate in vacuum to obtain the Herba Lychee extract;

[0066] (2) The lychee grass extract is mixed with silica gel and diatomaceous earth with a mass ratio of 1:1, and loaded onto a silica gel column, using 10 times the column volume of petroleum ether and 7 times the column volume of acetic acid Ethyl is eluted as an eluent, and the ethyl acetate eluate is collected and concentrated to obtain 0.25 parts by weight of the first medicinal extract;

[0067] (3) Carry out silica gel column chromatography separation to the first medicinal extract, use 3 times of column volumes of dichloromethane, 6 times of column volumes of the mixed solvent of dichloromethane and m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a new flavone compound with a structure shown by a formula (I) in the specification, a preparation method thereof and an application thereof in skin whitening and / or anti-inflammation. The new flavone compound can significantly inhibit tyrosinase activity and the nitrogen oxide metabolism of LPS induced mice macrophage RAW 264.7, therefore, the new flavone compound provided by the invention can be hopefully used for preparing medicaments with skin whitening and anti-inflammation effects, and a new thought is provided for researching and developing medicaments, health products, daily chemical products and the like with skin whitening and anti-inflammation effects.

Description

technical field [0001] The present invention relates to a new compound in medicinal plants, in particular to a new flavonoid compound and its derivatives isolated from Lychee Grass, and to a preparation method of the new flavonoid compound and its derivatives and its application in whitening and / or anti-inflammatory applications. [0002] technical background [0003] Lychee grass is the whole herb of Salvia plebeian R.Br. in the family Labiatae. etc., are widely distributed in East China, South Central, and Southwest China, and are mainly produced in Jiangsu, Zhejiang, Anhui and other provinces. [0004] Litchi grass tastes bitter, pungent, and cool in nature. It has the functions of clearing heat and detoxifying, cooling blood and dissipating blood stasis, diuresis and reducing swelling. It is used to treat acute tonsillitis, chronic bronchitis, nephritis edema, hemorrhoid swelling and pain. The main chemical components in Lychee Grass include flavonoids, terpenes, sesqui...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07D493/04A61K31/352A61K8/49A61P29/00A61Q19/02
CPCA61K8/498A61Q19/02C07D493/04
Inventor 胡瑞连李子安段朝辉周秋娜侴桂新金敏蓉
Owner 完美(广东)日用品有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com