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

105 results about "Catalpol" patented technology

Catalpol is an iridoid glucoside. This natural product falls in the class of iridoid glycosides, which are simply monoterpenes with a glucose molecule attached.

Method for preparing catalpol

The invention relates to a method for preparing catalpol, which has simple operation, light pollution and less equipment investment. The method comprises the following processing steps of: taking fresh roots of rehmannia root; adding methanol of which the volume is 5 to 10 times weight of the fresh roots; refluxing for 2 to 4 times, and taking 0.5 to 2 hours for each refluxing; merging backflow liquid; filtering the liquid; recovering the methanol at reduced pressure and condensing the liquid; adding isopyknic water saturation butarol to extract for 3 to 8 times; merging a butarol layer; recovering the butarol at reduced pressure until the butarol is exhausted; adsorbing the butarol with a macroporous adsorbent resin column; carrying out water washing to remove impurities; carrying out elution with 5 to 30 percent ethanol; collecting eluent of which the volume is 3 to 8 times volume of the column; concentrating and drying the eluent; adding the eluent to a silica gel chromatographic column by a dry method; carrying out elution with chloroform-methanol-water (6:4:1); making the eluent in each column volume as one fluid part; collecting 3rd to 6th fluid parts; merging the fluid parts; recovering the solvent and concentrating the fluid parts; and adding anhydrous ethanol to crystallize. The catalpol prepared by the method has high product purity and is easy to realize industrialization expansion.
Owner:南京璇荣贸易有限公司

Method for extracting catalpol from rehmannia stem

The invention relates to a method for extracting catalpol from rehmannia stem, which belongs to the medicine technical field. The method comprises the following steps: 1) rehmannia stem and water are heated for backflow extraction, an extract is performed pressure reduction and concentration to obtain a concentrate A; 2) 95% of ethanol is added in the concentrate A, standing is carried out for overnight, a supernate is performed pressure reduction and concentration to obtain a concentrate B; 3) a concentrate B is led to a XAD-16 macroporous resin column, elution is carried out by water, then elution is carried out by ethanol, an ethanol eluate is collected, the pressure reduction and concentration are carried out to obtain a stiff paste; 4) silica gel is added in the stiff paste, dried and a silica gel column is added, elution is carried out by ethyl acetate/methanol according to ratio of 4:1, a target fraction is collected, the pressure reduction, concentration and drying processes are carried out; 5) recrystallization is carried out on a dried object, the processes of filtering and drying are carried out to obtain the catalpol pure product. Compared with the prior art, the method of the invention has the characteristics of strong industrialization operationality, high extraction efficiency, resource preservation and environmental protection.
Owner:苏州玉森新药开发有限公司

Method for extracting catalpol from traditional Chinese medicine rehmannia root

The invention discloses a method for extracting catalpol from traditional Chinese medicine rehmannia root, belonging to the technical field of biomedicines. The method comprises the following steps: 1) taking homogenate of fresh rehmannia root and water, further adding methanol, stirring and then, filtering to obtain filtrate; 2) further extracting filter residue with methanol solution once, merging filtrate obtained by filtering twice and concentrating to obtain viscous liquid; 3) adding ethanol solution into the liquid, stirring and pouring out obtained clear liquid when no precipitate is generated any more; concentrating the obtained clear liquid till no alcohol exists so as to separate out pigment contained in rehmannia root from solution; 4) filtering insoluble, extracting water phase with n-butanol twice, merging n-butanol phase and removing solvent by reduced pressure evaporation to obtain grey white crystals; 5) recrystallizing the crystals with water once to obtain white crystals, namely catalpol. The extraction method disclosed by the invention has the advantages of simple process, extensive sources of raw material traditional Chinese medicine rehmannia root, low cost and environment-friendly extraction preparation process and opens a broad market for developing novel catalpol health care products and medicaments.
Owner:DAKANG JUNBISHA XIANYANG SHAANXI PROV

Medical prescription of catalpol freezing-drying powder for injection and preparation method

The invention relates to a medical prescription of catalpol freezing-drying powder for injection and a preparation method thereof. The invention is characterized in that the medical prescription of the catalpol freezing-drying powder for injection comprises 1 to 1000 mg of catalpol, 50mg to 2000mg of mannite, 100mg to 4000mg of glycine, 25mg to 1000mg of fucose, and 10% of sodium hydroxide solution right amount (pH 6.8-7.0). The invention also contains the medicinal application of the catalpol freezing-drying powder for injection which is used for treating clinical ischemia cerebral disease. The invention also comprises accessories used in the prescription which are used for preparing the catalpol and the freezing-drying powder for injection of the composition which is prepared by the catalop and other medicines according to different mixing ratios and is used for treating the ischemia cerebral disease. The invention aims at providing the traditional Chinese medicine active ingredient medicinal preparation. The preparation can permeate the blood brain barrier, alleviates the injury degree of the cerebral ischemia, increases the tolerance capability of the ischemia and oxygen-poor of brain tissues, promotes the newborn and the mature of brain microvascular, protects neurovascular units, promotes the neuron axon and dendrite growth, strengthens the synapse reconstruction, improves the back neutral behaviors of the cerebral ischemia, increases the neutral function score, and promotes the motor function recovery of affected limbs after the cerebral ischemia.
Owner:SOUTHWEST UNIVERSITY

Method for drying rehmannia through nitrogen regulating hot air

The invention discloses a method for drying rehmannia through nitrogen regulating hot air. The method includes the steps that ultrasonic preprocessing is carried out on the rehmannia firstly; and then nitrogen regulating hot air drying is carried out. According to the method for drying the rehmannia through the nitrogen regulating hot air, ultrasonic preprocessing is combined with the nitrogen regulating hot air drying to dry the rehmannia; advantage complementing and the coordination effect of a plurality of processing modes are achieved; catalpol losses in the rehmannia drying process are slowed down; the dry rehmannia quality is improved; meanwhile, the drying resistance is reduced; the drying efficiency is improved; the drying time is shortened. By means of the method for drying the rehmannia, the time used for achieving the dry rehmannia safety storage moisture content which is 0.15g / g in dry basis ranges from 130 min to 510 min; the dry rehmannia catalpol content ranges from 2.42% to 2.98%; the drying time is short; the catalpol content is high; the problems that traditional drying time for drying the rehmannia through the hot air is long, and the drying quality is not high are solved; rapid and quality-retaining drying of the rehmannia is achieved.
Owner:HENAN UNIV OF SCI & TECH

Pharmaceutical composition for treating diabetes and application thereof

InactiveCN103893361ASignificantly lower blood sugarAdvantages Lipid and hypoglycemicMetabolism disorderPlant ingredientsTiaozhi jiangtangAdditive ingredient
The invention provides a pharmaceutical composition for treating diabetes and application thereof. The pharmaceutical composition is mainly prepared from the following raw materials in parts by weight: 1 part of coptis chinensis and 0.1-20 parts of fresh rehmannia; the pharmaceutical composition is prepared by the following steps: extracting the coptis chinensis through steps of performing ethanol reflux extraction, and concentrating and drying an extracting solution to obtain a coptis chinensis extract; extracting the fresh rehmannia through steps of performing ethanol reflux extraction, and concentrating and drying an extracting solution to obtain a fresh rehmannia extract; then mixing the coptis chinensis extract with the fresh rehmannia extract. The invention provides application of the pharmaceutical composition in preparing a medicine for treating the diabetes as well. The pharmaceutical composition disclosed by the invention has a significant advantage in the transfer rate of such main active ingredients as catalpol, stachyose and berberine and the like compared with Qianjin optis chinensis pills prepared by a conventional process; moreover, pharmacological experiments prove that the medicine disclosed by the invention has significant pharmacological effects of regulating fat and reducing sugar, and the pharmacological effects are remarkably better than that of a conventional process product.
Owner:TIANJIN INSTITUTE OF PHARMA RESEARCH

Method for producing catalpol by utilizing suspension-cultured rehmannia glutinosa cambium stem cells

The invention discloses a method for producing catalpol by utilizing suspension-cultured rehmannia glutinosa cambium stem cells. The method specifically comprises the following steps: taking rehmanniaglutinosa plant stems as explants and establishing a rehmannia glutinosa cambium stem cell culture system capable of stable growth through induced culture, isolation culture and subculture; then adding a combined inductor beta-CD and methyl jasmonate in a bioreactor for suspension culture and refining through ultrasound extraction, macro-porous resin absorption and a high-performance liquid-phasepreparation column to obtain the high-purity hinokitiol. The method disclosed by the invention has the benefits that the utilized plant stem cell culture system has the excellent characteristics of synchronous growth, stable genetic character, high growth speed, stable catalpol synthesis and the like and provides a novel method for catalpol preparation as a raw material for catalpol preparation;in addition, compared with a chemical synthesis method, the method for producing the catalpol by utilizing a bioreactor culture technology combined with a plant stem cell culture technology has the advantages of being short in production period, high in safety, low in cost, high in yield, low in pollution and the like.
Owner:XINXIANG MEDICAL UNIV

Method for extracting catalpol

The invention relates to a method for extracting catalpol and in particular relates to a method for ultrasonic extraction on catalpol. The method comprises the following treatment steps: crushing fresh rehmannia roots into 2-10mm; adding distilled water which is 1-2 times of the mass of the treated rehmannia root powder into the treated rehmannia root powder, and further adding a prepared methanolblending liquid (the density is 0.82-0.89g/ml) which is 2-3% by weight of the raw materials; putting the obtained material into an ultrasonic device, further adding a 70-95% ethanol solution which is4-6 times of the weight of the raw materials, performing extraction for 3-4 hours under conditions that the ultrasonic frequency is 40KHz and the temperature is 60-70 DEG C, performing vacuum concentration on the extract, and recycling ethanol so as to obtain a concentrated solution; eluting the obtained concentrated solution by using 80% ethanol on a macroreticular resin column, collecting eluant, controlling the concentration temperature to be less than or equal to 50 DEG C, controlling the vacuum degree to minus 0.05MPa to minus 0.08MPa, and performing drying, so as to obtain catalpol. Themethod provided by the invention is simple and feasible, is high in content of a purification substance, namely the catalpol, is good in reproducibility, and in addition, a resin can be repeatedly used.
Owner:南京萌源康德生物技术有限公司
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