72 results about "Rupatadine" patented technology

The invention relates to a liquid preparation for dosing eyes, which comprises 0.1 to 25 g/100 mL of rupatadine and 0.5 to 30 g/100 mL of cyclodextrin compound. The invention also relates to a methodfor making the liquid preparation. The liquid preparation of the invention has the characteristics of rapid absorption, convenient use, obvious curative effect and stability, and has excellent curative effect for treating conjunctivitis, in particular for treating allergic conjunctivitis.

The invention provides a process for preparing Rupatadine or its salts, wherein the Rupatadine has a chemical formula (I).

The present invention provides cyclodextrin-free aqueous liquid formulations of rupatadine fumarate, useful for the treatment of allergic rhinitis and urticaria. Said formulations comprise rupatadine fumarate, one or more cosolvents and one or more pH regulating agents wherein the composition has a pH between 4 and 6.5.

The invention relates to rupatadine fumarate eye drops. The eye drops are prepared from rupatadine fumarate serving as a primary medicament, and a thickening agent, buffer salt, an isotonic agent, a bacteriostatic agent and a solubilizer serving as auxiliary materials. A preparation method A comprises the following steps of: dissolving the thickening agent by using a certain amount of water, and dissolving the primary medicament, the buffer salt, the isotonic agent, the bacteriostatic agent and the solubilizer by using a certain amount of water for injection; and mixing the two kinds of solution, and adding a proper amount of water for injection to reach the needed concentration. A preparation method B comprises the following steps of: stirring the thickening agent, the rupatadine fumarate, the buffer salt, the bacteriostatic agent, the isotonic agent, the solubilizer and the water for injection for a long time until the solution is clarified; and supplying the water for injection to fix the volume. The rupatadine fumarate eye drops have the advantages of simple preparation method and use for treating ocular surface allergic diseases, and have the characteristics of obvious curative effect, no irritation, no toxic or side effect, high stability and the like.

The invention relates to a compound composition containing intal and statins claritin. The compound composition consists of the following components: a) a certain amount of intal; b) a certain amount of one of olopatadine hydrochloride, ioratadine, desloratadine, degreasing ioratadine, desloratadine, rupatadine and betahistine; c) other medicinal excipients. The compound composition can be made into external preparations such as eye drops, nose drops, aerosol, spray, inhalant, gelata, eye ointments, ointments or patch and the like. The compound composition can be used for curing the diseases such as anaphylactic eye diseases, anaphylactic rhinitis, skin urtication, urticaria, allergic asthma and the like, can significantly improve allergic symptoms, and has the characteristics of high efficiency, stability, safety, low adverse reaction rate, convenient use and the like.

The invention provides a rupatadine fumarate compound which has dual effects of antihistamine and antagonistic platelet activating factor (PAF). According to the research, allergy and inflammatory diseases are multi-factor complex processes caused by generation and release of various different media; histamine is the most inflammatory medium appearing in allergy early symptom, and the disease symptoms including sneezing, rhinocnesmus, tearing, running nose, skin itch, wheal and the like are mostly caused by histamine H1 receptor. And PAF also can cause bronchial constriction and increased permeability of the vessel, so that running nose, nasal congestion, wheal and itch are caused; meanwhile, the PAF is also a main cause of asthma. The antiallergic drug which is clinically used only has an antihistamine activity effect, but does not have a PAF antagonistic effect.

The invention provides a method for preparing rupatadine fumarate, which is suitable for actual large-scale industrial production and has high yield and quality and excellent stability. A preparation method for the salifying of the rupatadine fumarate comprises the following step of performing a salifying reaction on rupatadine and fumaric acid in a mixed solvent, wherein the mixed solvent is a mixed solvent of acetone and water in a volume ratio of 5-20:1. In addition, the rupatadine fumarate also can be subjected to recrystallization in the mixed solvent.

The invention discloses rupatadine fumarate tablets and a preparation method thereof, belonging to the technical field of medicine. The tablets are prepared by making granules from rupatadine fumarate as active ingredient, and pharmaceutical adjuvants including a filler, a binder and a disintegrant, adding a lubricant, and making into tablets. Through the screening of the type and use amount of the filler, disintegrant, binder and lubricant and the use of specific sieving mesh to sieve raw materials during a preparation process, the prepared tablets have stable properties, good content uniformity, good dissolution, small tablet weight difference and high stability, so as to ensure in vivo bioavailability and clinical curative effect.

The invention provides a preparation method of rupatadine fumarate, which includes the steps of (1) reducing an amide compound 1 with a borane reagent to obtain rupatadine 2, represented as the following formula; and (2) performing a salt-forming reaction to the rupatadine with fumaric acid to prepare the rupatadine fumarate. The method is simple in operations, is reduced in use amount of reagents and is increased in production yield when compared with a method in the prior art.

The invention provides a preparation method of rupatadine fumarate shown as a formula (VII). The preparation method comprises the following steps: (1) 5-methylnicotinic acid is taken as a raw material and subjected to a reaction in presence of methanol and a catalyst, and a corresponding compound shown as a formula (II) is obtained; (2) the compound shown as the formula (II) is subjected to a reaction in presence of a reducing agent and a solvent, and a corresponding compound shown as a formula (III) is obtained; (3) the compound shown as the formula (III) is subjected to a reaction in presence of a brominating agent and a solvent, and a corresponding compound shown as a formula (IV) is obtained; (4) the compound shown as the formula (IV) and desloratadine (V) are subjected to condensation under the actions of an acid binding agent and a solvent, and rupatadine (VI) is obtained; (5) rupatadine (VI) is subjected to a reaction in presence of fumaric acid and a solvent, and corresponding rupatadine fumarate (VII) is obtained.

The invention relates to the fields of medicine and dosage forms of medicine, in particular to an oral liquid preparation of rupatadine fumarate and a preparation method of the oral liquid preparation, and discloses an oral liquid preparation of rupatadine fumarate. The oral liquid preparation per 100 mL contains 0.128 g of rupatadine fumarate, 1-20 g of a solubilizer, 1-30 g of a sweetening agent, 0-0.2 g of a flavoring agent, 0-0.01 g of a coloring agent, 0-0.20 g of a preservative and a pH regulator for adjusting the pH value to 4.6-5.6. The oral liquid preparation of rupatadine fumarate has good stability in the study of accelerated stability.

The invention provides a preparation method of a rupatadine fumarate impurity S. The preparation method comprises the following steps: performing a substitution reaction on a raw material A and a rawmaterial B to obtain a substitution product; halogenating the substitution product by a halogenating reagent to obtain a halogenation product; and performing a condensation reaction on the halogenation product and a raw material C to obtain the rupatadine fumarate impurity S. The preparation method has the advantages of wide sources and low prices in the raw materials, increase in the yield of therapamycin fumarate impurity S through a short synthesis route, few side reactions and good reproducibility. A reference substance with excellent quality and high purity can be provided for the qualitative and quantitative analysis of rupatadine fumarate through the preparation and structural identification of the rupabadine fumarate impurity S in order to guide the preparation and the applicationof the rupatadine fumarate. The structure of the rupatadine fumarate impurity S is shown in the description, and X in the structure is a halogen atom.

The invention relates to the technical field of content detection of biomedical preparations, in particular to a method for detecting the content of rupatadine fumarate by liquid chromatography. According to the method, a chromatographic column is used, gradient elution is adopted, a flowing phase consists of a flowing phase A and a flowing phase B, the flowing phase A is a buffer solution which consists of 0.05 to 0.30 volume percent triethylamine and 0.01 to 0.05mol/L phosphate and phosphoric acid and has the pH of 3.0 to 5.0, and the flowing phase B is an organic modifier. By the method, related substances such as the rupatadine fumarate are controlled, and the content of the rupatadine fumarate can be accurately measured, the quality of the rupatadine fumarate is controllable, the method is simple and quick, can be used for the quality control of the rupatadine fumarate and has great practical significance for quality control in the synthesis and preparation processes, analysis sensitivity is high, a result is accurate and reliable, the quality of Chinese herbal medicines and a preparation is controllable, and the requirement of quick analysis during production is met.

The invention relates to a rupatadine fumarate granule and a preparation method thereof. The rupatadine fumarate granule can be used for treating allergic rhinitis and urticaria. The granule comprises rupatadine fumarate, organic acid, a water-soluble polymer material, a flavoring agent, an artificial sweetening agent and solid fruity essence and does not contain antiseptic. The rupatadine fumarate granule is prepared by using the proper preparation method. The preparation method effectively overcomes the problems of dissolving-out speed and hygroscopicity, improves stability of the granule and enables the granule to have good taste and to be easily taken by patients.

The invention discloses a rupatadine preparation process, which comprises: S1, preparing methyl 5-methylnicotinate; S2, preparing 5-methyl-3-pyridinemethanol; S3, preparing 3-methyl-5-chloromethylpyridine hydrochloride; and S4, preparing rupatadine. According to the present invention, the preparation process has advantages of low cost, mild reaction condition, simple operation, low requirement onequipment, good product purity and high yield, and is suitable for large-scale industrial production.

An external patch that contains rupatadine as a second-generation antihistamine, has excellent plaster physical properties, good adhesion to applied skin, and good transdermal absorption of rupatadine as an active ingredient is provided. The external patch containing rupatadine uses an acrylic adhesive as an adhesive base. Specifically, the external patch containing rupatadine uses an acrylic adhesive as an adhesive base and further contains an organic acid having 2 to 7 carbon atoms as a solubilizer, a fatty acid ester as a softener, and/or a surfactant.

The invention relates to the biomedical technical field, and in particular, relates to a rupatadine fumarate emulsion type nasal spray agent and a preparation method thereof. A prescription of nasal drops contains the following medicinal-grade components by mass: 2-5% of rupatadine fumarate, 5-25% of an oil phase, 10-20% of an emulsifier, 40-65% of an aqueous phase, 0.5-5% of an osmotic pressure regulation agent, 0.05-0.1% of a bacteriostatic agent, and 0.5-5% of a pH regulator. A nose drop liquid is prepared by emulsification with a high-speed shearing homogenizer, aseptic operation is carried out, and the nose drop liquid are sub-packed in a special spray device.

Methods for preventing feedlot bovine respiratory diseases employing an anti-inflammatory drug rupatadine are disclosed. Compositions are further disclosed. Beneficially, the methods and compositions provide safe and cost-effective management of a costly disease.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a rupatadine fumarate intermediate and a preparation method of rupatadine fumarate. The method comprises the following steps: (1) reacting a compound shown in a formula VI with a halogenating reagent to obtain a rupatadine fumarate intermediate shown in a formula V; (2) adding the intermediate of formula V and a compound of formula IV into an acid-binding agent for reaction to obtain a compound of formula III; (3) reacting the compound in the formula III with a reducing agent to obtain a compound in a formula II; and (4) reacting the compound shown in the formula II with fumaric acid to obtain rupatadine fumarate. According to the preparation method, 3, 5-dimethylpyridine-N-oxide is used for carrying out bromination or chlorination, and compared with bromination or chlorination carried out by using 3, 5-dimethylpyridine, the purity and the yield of a halogenated product are higher. Moreover, after the compound shown in the formula V reacts with the compound shown in the formula IV, column chromatography is not needed, the compound shown in the formula III is obtained through solvent refining, post-treatment operation is simple, and industrial production is facilitated.

The invention discloses a preparation method of a rupatadine fumarate tablet. The preparation method comprises the following steps of: S1, mixing rupatadine fumarate with a part of microcrystalline cellulose, and then performing jet milling to obtain mixed powder; S2, mixing the mixed powder, pregelatinized starch, lactose and the remaining microcrystalline cellulose, performing wet granulation, and drying the mixture in a fluidized bed, adopting water as a wetting agent; and S3, carrying out size stabilization on particles obtained in the step S2, mixing the particles with magnesium stearate and a coloring agent, and tabletting to obtain the rupatadine fumarate tablet. According to the preparation method of the rupatadine fumarate tablet of the invention, the rupatadine fumarate and a part of microcrystalline cellulose are mixed and then are subjected to airflow pulverization, so that the operability in production is improved, the solubility of the raw materials can also be improved, and the absorption speed of the product in vivo is greatly increased; the wet granulation process is adopted, the process is stable and controllable; and the stability of the prepared sample is relatively good, and large-scale production and quality control during large-scale production are facilitated.