Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

70 results about "Harmine" patented technology

Harmine, also known as banisterine and as telepathine, a fluorescent harmala alkaloid belonging to the beta-carboline family of compounds. It occurs in a number of different plants, most notably the Middle Eastern plant harmal or Syrian rue (Peganum harmala) and the South American vine Banisteriopsis caapi (also known as "yage" or "ayahuasca"). Harmine reversibly inhibits monoamine oxidase A (MAO-A), an enzyme which breaks down monoamines, making it a RIMA. Harmine selectively binds to MAO-A but does not inhibit the variant MAO-B.

Total alkaloids extraction of corydalis, its preparation method, medicine composition containing the total alkaloids extraction and application thereof

InactiveCN101054377AEfficient preparation methodIn line with the proportion of natural occurrencePowder deliveryAlkaloids chemistryHarmineFreeze-drying
The present invention discloses a Rhizoma Corydalis Decumbentis total alkaloids extract, its preparation method, pharmaceutical composition containing same. The total alkaloids mainly comprise : macleyine, tetrahydropalmatine, bicucalline, palmatine hydrochloride, 'xiawuning' alkaloid, corydaline harmine, other alkaloid and extract. The preparation method is : using Rhizoma Corydalis Decumbentis as material, adding right amount of polar solvent for leaching, merging the leachate, carrying out large pore adsorption resin chromatography, eluting impurity with diluted acid and alkaline aqueous solution orderly, eluting using polar organic solvent, collecting elution liquor, eliminating impurity further by alumina column adsorption, Collecting after-column liquid, concentrating liquor to obtain the Rhizoma Corydalis Decumbentis total alkaloids extract. The present invention also discloses a pharmaceutical composition containing the total alkaloids extract and uses of the pharmaceutical composition in preparing tablet, capsule, soft capsule, suppository, granula, transdermal absorption agent, drop pills, oral disintegrating agent, slow release agent, freeze-drying powder injection etc.
Owner:SHANGHAI INST OF PHARMA IND

Preparation method and application of fatty acid-trimethyl chitosan polymer modified by lactobionic acid

The invention discloses a fatty acid-trimethyl chitosan polymer modified by a lactobionic acid, a preparation method and an application. The fatty acid-trimethyl chitosan polymer modified by the lactobionic acid is an active targeting nano micelle carrier material. A trimethyl chitosan with a good water-solubility is used as a carrier material, the hydrophobic modification is performed by a fatty acid, and then the surface modification is performed by the lactobionic acid to obtain a polymer micelle with the lactobionic acid which mediates tumor tissue target. Harmine is used as a model drug to prepare a drug-loaded nano-micelle in a rubbing and self-assembly mode. A test confirms that the drug loading capacity and encapsulated ratio of the drug-loaded nano-micelle are high, the slow-release property is achieved, cells are effectively taken in through a lactobionic acid receptor pathway, and distribution of drugs on the tumor tissue is increased, so that the curative effect is improved, the toxic and side effect is reduced, and targeted therapy is achieved. The fatty acid-trimethyl chitosan polymer modified by the lactobionic acid, the preparation method and the application provide an ideal novel drug carrier and a preparation form for antitumor drugs with slightly solubility.
Owner:SUZHOU UNIV

Method for determining decumbent corydalis tuber total alkaloid extractive content with UFLC and method for establishing UFLC finger print thereof

The invention relates to determination of alkaloid content in decumbent corydalis tuber total alkaloid extractive. The determination method comprises the following steps: (1) preparing a decumbent corydalis tuber total alkaloid extractive solution; (2) preparing a standard solution; (3) respectively sucking the extractive solution and the standard solution of an equal amount, and carrying out UFLC determination to obtain a UFLC chromatogram; and (4) analyzing chromatographic peaks of protopine, bicuculline, xiawuning alkaloid, corydaline harmine, tetrahydropalmatine and palmatine in the chromatogram, and calculating contents thereof by an external standard method. Besides, the invention also provides a method for establishing a UFLC finger print of decumbent corydalis tuber total alkaloidextractive. The determination method can quickly and accurately determine contents of six main alkaloids in decumbent corydalis tuber total alkaloid extractive, and the UFLC finger print of decumbentcorydalis tuber total alkaloid extractive can be used for the overall control on substance groups in decumbent corydalis tuber total alkaloid extractive, thereby controlling the quality of extractivefrom the macro analysis perspective.
Owner:SHANGHAI INST OF PHARMA IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products