Medicament of expectorant anti-asthma, preparing method and function thereof
A drug, anti-asthma technology, applied in the direction of drug combination, pharmaceutical formula, medical preparations containing active ingredients, etc., can solve the problems of adverse reactions, high price, no recognized rapid control of acute asthma attacks and significant prevention of asthma recurrence. , to achieve a good expectorant effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0071] Take Desert Ga or Desert Ga seeds, pulverize them, pass through a 40-mesh sieve, add 10 times the amount of 80% ethanol to heat and reflux to extract twice for 2 hours each time, combine the filtrates, concentrate and evaporate to dryness to obtain Drug A.
Embodiment 2
[0073] 1. Put the drug A obtained in Example 1 on a silica gel column, the weight ratio of the weight of the silica gel to the dry crude extract is 4: 1 (Kg / Kg), use chloroform to elute, and the eluent is concentrated to obtain the extract;
[0074] 2. continue to go up the silica gel column with the extractum obtained in step 1 and adopt cyclohexane-acetone gradient elution, the condition of gradient elution adopts thin-layer chromatography (TLC) to control, and the condition of thin-layer separation is as follows: stationary phase It is a silica gel G plate, the developing agent is cyclohexane-acetone=2:1, and the developing agent is 1% aluminum chloride solution. Use cyclohexane to elute first, until spray 1% aluminum trichloride solution and then put UV 365 When there are green fluorescent spots on the bottom, use cyclohexane-acetone (10:1) solvent to elute, and use the same method and conditions of thin-layer chromatography to track and identify until after spraying 1% al...
Embodiment 3
[0076] 1. The drug A obtained in Example 1 is put on a silica gel column, the weight ratio of the weight of the silica gel to the dry crude extract is 4: 1 (Kg / Kg), and ethyl acetate is used for elution, and the eluent is concentrated to obtain the extract ;
[0077] 2. The medicinal extract obtained in step 1 continues to go up the silica gel column and adopts cyclohexane-acetone (6: 1) gradient elution, and the condition of gradient elution adopts thin-layer chromatography (TLC) to control, and the thin-layer separation The conditions are as follows: the stationary phase is silica gel G plate, and the developer is cyclohexane-acetone=2:1. When red spots appear after spraying 10% sulfuric acid ethanol solution, use cyclohexane-acetone (4:1) solvent instead Carry out elution, also adopt the aforementioned thin-layer chromatography method and condition to track and identify, until after spraying 10% sulfuric acid ethanol solution, when there are no other impurities except red s...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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