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

Medicinal composition and preparation method thereof

A composition and medicine technology, applied in the field of pharmaceutical compositions and their preparation, can solve problems such as poor water solubility of medicines, and achieve the effects of convenient operation process, good solubility, and improved utilization efficiency

Inactive Publication Date: 2013-03-06
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortcomings of poor water solubility of certain drugs in the prior art, the present invention provides a pharmaceutical composition capable of improving the water solubility of drugs and a preparation method thereof

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
  • Medicinal composition and preparation method thereof
  • Medicinal composition and preparation method thereof
  • Medicinal composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] According to the preparation method provided by the present invention, the contacting in step (a) is carried out under an inert atmosphere, and the contacting conditions include: the molar ratio of the ester to the cyclodextrin is 1-15:1, relatively For 1g of cyclodextrin, the amount of the organic amine is 0.01-5ml, the amount of the first organic solvent is 4-100ml, the contact temperature is 70-85°C, and the contact time is 10-15 hours.

[0044] Since lactide, glycolide and caprolactone are ring-opened under the action of the catalyst, they can directly react with -OH on the cyclodextrin. Therefore, in the present invention, one or both of lactide, glycolide and caprolactone are directly contacted with cyclodextrin to obtain the cyclodextrin-aliphatic polyester graft represented by formula (6). branch polymer. Lactide, glycolide, and caprolactone used in the present invention are all commercially available.

[0045] According to the preparation method provided by t...

Embodiment 1

[0065] Preparation of hydroxypropyl β-cyclodextrin-polylactic acid-dipalmitoylphosphatidylethanolamine grafted polymer nanoparticles loaded with paclitaxel

[0066] (1) Put 5.64g of lactide (Alfar Aesar, 97%, analytically pure) and 2.5g of hydroxypropyl β-cyclodextrin (Sigma-Aldrich, Japan) in a three-necked flask, and vacuumize for 1 hour Finally, add 10 mL of distilled dimethyl sulfoxide to dissolve, add 0.5 mL of triethylamine (Xilong Chemical Factory, Shantou City, Guangdong, analytically pure), and react at 80 °C for 12 hours under nitrogen protection to obtain hydroxypropyl β - Cyclodextrin-polylactic acid graft polymer crude product. Then precipitate with 200mL water, wash with water (100mL×4 times), dry in a vacuum oven at 20°C for 48 hours, then extract with toluene (20mL×2 times), and dry in a vacuum oven at 20°C for 48 hours. 6.11 g of solid product hydroxypropyl β-cyclodextrin-polylactic acid graft polymer was obtained. Calculated n=14.

[0067](2) Add 2 g of hy...

Embodiment 2

[0083] Preparation of hydroxypropyl β-cyclodextrin-polylactic acid-dipalmitoylphosphatidylethanolamine grafted polymer nanoparticles loaded with paclitaxel

[0084] Steps (1) to (3) were carried out according to the method of Example 1. The dosages, conditions and results of the substances involved in the method are shown in Tables 1 to 3.

[0085] (4) Dissolve 20 mg of purified hydroxypropyl β-cyclodextrin-polylactic acid-dipalmitoylphosphatidylethanolamine graft polymer in 3 mL of dichloromethane to obtain cyclodextrin-aliphatic polyester-phosphatidyl Ethanolamine-grafted polymer solution, 0.2 mg of paclitaxel (Norui Pharmaceutical Technology Co., Ltd., Beijing, batch number: 090328) was dissolved in 0.2 mL of dichloromethane to obtain paclitaxel solution, cyclodextrin-aliphatic polyester-phosphatidylethanolamine The graft polymer solution and paclitaxel solution were mixed, and the mixture was added to 20mL aqueous solution containing 0.4%wt surfactant polyvinyl alcohol (PV...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a medicinal composition and a preparation method thereof. The medicinal composition comprises a carrier and an active component loaded on the carrier, wherein the carrier is nano particles of cyclodextrin-aliphatic polyester-phosphatidyl ethanolamine graft polymer with the structural formula shown in a formula (1) in the specifications; and in the formula (1), m is an integer from 6 to 8, and G is an oxygen atom or has a formula shown in the specifications.

Description

technical field [0001] The invention relates to a pharmaceutical composition and a preparation method thereof. Background technique [0002] Some drugs have good curative effects on major diseases, but due to their poor water solubility, they cannot be effectively absorbed by the human body, making it difficult to fully exert their drug effects, which affects their clinical application. [0003] Paclitaxel (PTX for short) is a new type of broad-spectrum anticancer drug chemically modified from diterpenoid natural products extracted from Taxus brevifolia. It has attracted widespread attention due to its unique mechanism of action. Numerous studies have shown that paclitaxel is effective in the treatment of various tumors, such as ovarian cancer, breast cancer, non-small cell lung cancer, head-neck cancer, and Kaposi sarcoma caused by AIDS, etc., so it is used as a first-line broad-spectrum anticancer drug. But its water solubility is extremely poor. In order to increase its ...

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): A61K47/40A61K31/337A61K9/14C08B37/16C08G63/91A61P35/00
Inventor 聂广军吴雁苗卿华韩思媛王欢
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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