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71results about How to "Pharmacologically active" patented technology

Method for separating and preparation of Gelsemium elegans alkaloid monomer by high speed counter current chromatography

The invention discloses a method for separating and preparing a gelsemium alkaloid monomer from gelsemium by adopting high-speed counter current chromatography, which pertains to the separation method of medicinal plant monomers. The invention takes total alkaloids of gelsemium as a raw material and a high-speed counter current chromatograph as a separating device and the method comprises that a solvent system which is composed of stationary phase and mobile phase is prepared; the high-speed counter current chromatograph is filled with the stationary phase and then the mobile phase is pumped in and balanced; and then sampling is conducted by a sample valve; target components are collected according to the map of a detector or in combination of the detection methods of high efficiency liquid chromatography and thin layer chromatography, and distilled under reduced pressure and then recrystallized to obtain the gelsemium alkaloid monomer with high purity. By adjusting the specific proportional parameters of the solvent system, single or multiple target gelsemium alkaloid monomers can be separated by one step or step by step. The method is convenient and efficient, large in preparation amount, less in sample loss, good in separation effect and high in controllability and applicable to automatic production and the obtained gelsemium alkaloid monomer from separation has diverse pharmacological activities and application prospect to be prepared into medicines.
Owner:FUJIAN MEDICAL UNIV

Method for separating and preparation of Gelsemium elegans alkaloid monomer by high speed counter current chromatography

The invention discloses a method for separating and preparing a gelsemium alkaloid monomer from gelsemium by adopting high-speed counter current chromatography, which pertains to the separation method of medicinal plant monomers. The invention takes total alkaloids of gelsemium as a raw material and a high-speed counter current chromatograph as a separating device and the method comprises that a solvent system which is composed of stationary phase and mobile phase is prepared; the high-speed counter current chromatograph is filled with the stationary phase and then the mobile phase is pumped in and balanced; and then sampling is conducted by a sample valve; target components are collected according to the map of a detector or in combination of the detection methods of high efficiency liquid chromatography and thin layer chromatography, and distilled under reduced pressure and then recrystallized to obtain the gelsemium alkaloid monomer with high purity. By adjusting the specific proportional parameters of the solvent system, single or multiple target gelsemium alkaloid monomers can be separated by one step or step by step. The method is convenient and efficient, large in preparation amount, less in sample loss, good in separation effect and high in controllability and applicable to automatic production and the obtained gelsemium alkaloid monomer from separation has diverse pharmacological activities and application prospect to be prepared into medicines.
Owner:FUJIAN MEDICAL UNIV

Tegafur derivative containing 1,3,4-thiadiazole heterocyclic ring and amide group

The invention provides a tegafur derivative containing a 1,3,4-thiadiazole heterocyclic ring and an amide group. The structural formula of the tegafur derivative is as shown in the specification. A preparation method of the tegafur derivative comprises the steps of (1) dissolving a 3-(methoxycarbonylmethyl)tegafur in methanol, dropwise adding a sodium hydroxide solution, extracting by using ethyl acetate and distilled water and separating out an organic layer and a water layer, next, extracting by using ethyl acetate and blending the organic layers, and adding anhydrous sodium sulfate to obtain 1-(tetrahydro-2-furyl)-3-carbethoxy-5-fluoro-2,4-pyrimidinedione; (2) blending 1-(tetrahydro-2-furyl)-3-carbethoxy-5-fluoro-2,4-pyrimidinedione with dioxane, then adding sulfoxide chloride to obtain a 1-(tetrahydro-2-furyl)-3-chloracetyl-5-fluoro-2,4-pyrimidinedione solution, and then adding dioxane, evenly mixing and then sealing for later use; (3) taking 2-amino-5-p-nitrophenyl-1,3,4-thiadiazole, dioxane and triethylamine, and dropwise adding the 1-(tetrahydro-2-furyl)-3-chloracetyl-5-fluoro-2,4-pyrimidinedione solution obtained in the step (2) to obtain a pure product 1-(tetrahydro-2-furyl)-3-acetamido-[5-p-nitrophenyl-(1,3,4-thiadiazole-2-yl)]-5-fluoro-2,4-pyrimidinedione. The tegafur derivative has anti-tumor effect and no obvious toxicity, and is used for clinically treating malignant tumors.
Owner:INST OF PHARMACY SHANDONG PROV ACAD OF MEDICAL SCI

Nepenthes extract mosquito-repellent liquid and preparation method thereof

The invention belongs to the field of mosquito-repellent incenses, and in particular relates to a nepenthes extract mosquito-repellent liquid and a preparation method thereof. The nepenthes extract mosquito-repellent liquid is prepared from the following raw materials in parts by weight: 110-160 parts of a nepenthes extracting solution, 67-94 parts of a wormwood extracting solution, 33-51 parts of a lantana camara extract solution, 8-20 parts of a lavender extract solution, 40-60 parts of deionized water and 30-55 parts of ethanol. The preparation method comprises the following steps: performing ultrasonic treatment, eccentric treatment, concentration treatment and the like so as to prepare the nepenthes extracting solution, the wormwood extracting solution, the lantana camara extracting solution and the lavender extracting solution, mixing the nepenthes extracting solution, the wormwood extracting solution, the lantana camara extracting solution, the lavender extracting solution, deionized water and ethanol, and performing sealed stirring for 3-6 hours at 53-70 DEG C to obtain the nepenthes extract mosquito-repellent liquid. Effective components of the nepenthes extract mosquito-repellent liquid are all extracted from natural traditional Chinese herbal medicines which are relatively low in cost, so that the prepared product is safe and non-toxic and has the effects of killing bacteria, repelling mosquitoes and helping sleep.
Owner:郑耀相

Quantitative fingerprint spectrum analysis method for components in ginger ginger pinellia percolate

The invention discloses a quantitative fingerprint spectrum analysis method for components in ginger and ginger pinellia percolate. The method comprises the following steps: (1) preparing a test solution and a reference substance mixed solution; and (2) analyzing the reference substance mixed solution and the test solution by adopting a high performance liquid chromatograph to obtain the quantitative fingerprint spectrum of the components in the ginger and pinellia percolate. Wherein the chromatographic conditions are as follows: a high performance liquid chromatography system is selected as an instrument, and a Waters Atlants T3 chromatographic column (100mm * 2.1 mm, 3.0 [mu] m) is selected as a chromatographic column; a DAD detector is adopted; the flow rate is 0.30 mL/min, the column temperature is 25 DEG C, and the sample injection volume is 3-5 [mu] L; taking pure water and acetonitrile as mobile phases; and (3) selecting chromatographic peaks existing in chromatograms of different batches of ginger and ginger pinellia percolates as common peaks, calculating component contents of different batches of percolates, and calculating similarity, thereby providing scientific basis and technical support for quality control of the ginger and ginger pinellia percolates. The method provided by the invention makes up for the deficiency of a method for detecting chemical components of a common goldenrop capsule production intermediate.
Owner:浙江赞生药业有限公司
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