41 results about "Crisaborole" patented technology

The invention discloses a preparation method of crisaborole. The method comprises the steps as follows: a compound shown in a formula I and alkali metal borohydride are subjected to a contact reaction, and a compound shown in a formula II is obtained; the compound shown in the formula II and a compound a are subjected to a contact reaction, and a compound III is obtained; or the compound shown inthe formula II and dihydropyran are subjected to a contact reaction, and a compound III is obtained, wherein the compound a is trimethylchlorosilane, tert-butyldimethylsilyl chloride or chloromethyl methyl ether; the compound shown in the formula III and an isopropylmagnesium chloride solution are subjected to a contact reaction, and a standby solution is obtained; then, the standby solution is added to a mixed solution of a compound b and a third organic solvent for a contact reaction, hydrochloric acid is added for a contact reaction, and crisaborole, namely, a compound shown in a formula IV, is obtained, wherein the compound b is 2-alkoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, triisopropyl borate or trimethyl borate.

The invention relates to the technical field of crisaborole, in particular to a preparation method of crisaborole. The method comprises the following steps: carrying out nitration reaction on cyanophenylboronic acid and concentrated nitric acid to obtain 2-cyan-4-nitrobenzeneboronic acid; then carrying out reduction reaction to obtain 2-formoxyl-4-nitrobenzeneboronic acid; then carrying out reduction reaction to obtain 2-hydroxymethyl-4-nitrophenylboronic acid; carrying out condensation reaction to obtain 2-hydroxymethyl-5-nitrobenzeneboronicacidhemiester; carrying out reduction reaction and diazotization hydrolysis reaction to obtain 2-hydroxymethyl-5-hydroxy benzeneboronicacidhemiester; and finally, carrying out etherification reaction on the 2-hydroxymethyl-5-hydroxy benzeneboronicacidhemiester and fluorobenzonitrile to obtain the crisaborole. The preparation method of the crisaborole has the advantages that the purity of the prepared crisaborole is good, and the yield is high.

The invention relates to the technical field of medicines, in particular to compound pharmaceutical composition for treating inflammatory diseases of skin. The compound pharmaceutical composition is characterized in that active ingredients of the compound medicine comprise tofacitinib and crisaborole. The pharmaceutical composition has higher treatment effects and lower use dosage, has remarkablecollaborative treatment effects and can be used for treating inflammatory diseases of skin.

The invention discloses a preparation method of a Crisaborole intermediate. The Crisaborole intermediate has a structure shown as the formula VI. The preparation method comprises the following steps:performing a contact reaction on a compound shown as the formula I and benzyl halide, so as to form a compound shown as the formula II; performing a contact reaction on the compound shown as the formula II and alkali metal borohydride, so as to obtain a compound shown as the formula III; performing a contact reaction on the compound shown as the formula III and a compound a, or performing a contact reaction on the compound shown as the formula III and dihydropyran, so as to obtain a compound shown as the formula IV, wherein the compound a is trimethylchlorosilane, tert-butyldimethylsilyl chloride and chloromethyl methyl ether; performing a contact reaction on the compound shown as the formula IV and an isopropylmagnesium chloride solution; adding an obtained solution into a compound b, performing a contact reaction on the mixture and fourth organic solvent mixed liquor and adding hydrochloric acid into the mixture for contact reaction, so as to obtain a compound shown as the formula V,wherein the compound b is 2-alkoxy-4, 4, 5, 5-tetramethyl-1, 3, 2-dioxaborolane, triisopropyl borate or trimethyl borate; performing a hydrogenation reaction on the compound shown as the formula V toobtain a compound shown as the formula VI.

The invention provides crisaborole temperature-sensitive gel as well as a preparation method and application thereof. The crisaborole temperature-sensitive gel is prepared from the following raw material components in percentage by mass: 1 to 2 percent of crisaborole, 17 to 23 percent of poloxamer, 0.1 to 1 percent of modified cellulose, 5 to 15 percent of propylene glycol and/or glycerol, 5 to 10percent of ethanol, 0.01 to 0.02 percent of butylated hydroxytoluene and the balance of water. The crisaborole temperature-sensitive gel disclosed by the invention has the advantages that injection implantation and long-term drug release can be achieved; the drug can play a good slow-release effect in a human body by adopting a percutaneous drug delivery mode; in addition, drug extravasation canbe prevented and long-term drug release is achieved.

The invention provides a preparation method of crisaborole. More specifically, 5-bromophthalide is used as an initial raw material, and is subjected to etherification, hydrolysis, hydroxyl protection, condensation reaction, photoreaction boronation and cyclization to obtain the crisaborole. The preparation method has the advantages of readily available raw materials, mild reaction conditions, avoidance of metal catalysis and harsh conditions due to adoption of photoreaction for boronizing, low cost, convenience in operation and suitability for industrial production.

The invention discloses a method for preparing crisaborole shown as a formula I. The preparation method disclosed by the invention comprises the following steps: carrying out the following reaction between a compound IV and bis(pinacolato)diboron in a solvent in the presence of alkali and a catalyst, thereby obtaining the compound V. The preparation method disclosed by the invention has the characteristics of being readily available in raw materials, simple in steps, mild in reaction conditions, controllable in quality, environmental-friendly, low in cost and the like. The industrial production of the bulk drug is facilitated, and development of the economic technology is promoted. The structural formula is as shown in the specification.

The invention discloses a Crisaborole sustained-release film with good paste effect and a preparation method thereof. The film is prepared by the following raw materials: active ingredients, a plasticizer, a filler, an absorption enhancer, a suspending agent, and an adhesive. The film solves the problem that the frequency of drug use is too high and a longer skin retention time and a reduced number of administrations can be provided, a film preparation is prepared by using a variety of film-forming auxiliary materials, which complement each other and indispensable, the plasticizer and the filler enhance film formation, the absorption enhancer enhances drug penetration capability, and the suspending agent ensures the dispersibility of the raw materials in a liquid state, and the adhesive enhances the adhesion of the film to the skin.

The present invention relates to a novel process for the preparation of 4-[3-formyl-4-(4, 4, 5, 5-tetramethyl-1, 3, 2-dioxaborol-2-yl) phenoxy] benzonitrile; and the compound is used as an intermediate for the synthesis of crisaborole. The method adopted by the invention is a non-palladium-catalyzed decarboxylation boronation method which takes carboxylic ester as a substrate and isonicotinate as a catalyst; and compared with a palladium-catalyzed coupling boronation method which takes halide as a substrate in the prior art, the method has the advantages of safety in operation, low cost, environmental friendliness and the like.

A crisaborole sustained-release film having good absorption effects and a preparing method thereof are disclosed. The film is prepared from an active component, a plasticizer, a filler, an absorptionpromoter, a suspending aid and an adhesive. The film can overcome a problem that medicine use frequency is over-high and can provide longer skin residence time and a decreased number of times of administration. A plurality of film forming auxiliary materials, which supplement each other and which are integral, are adopted to prepare the film, the plasticizer and the filler enhance film forming performance, the absorption promoter enhances medicine infiltration capacity, the suspending aid ensures dispersibility of raw materials in a liquid state, and the adhesive enhances the degree of adhesion between the film and skin.

The invention discloses a medicine gel, a preparation method thereof and application of the medicine gel. The medicine gel is prepared from the following components: 1-2 wt% of crisaborole, 1.2-2.4 wt% of diphenylheptane A hydroxypropyl-beta-cyclodextrin inclusion compound, 18-20 wt% of poloxamer 407, 1-3 wt% of poloxamer 188, 0.1-0.2 wt% of hydroxypropyl cellulose, 8-10 wt% of propylene glycol, 5-10 wt% of glycerol, 0.1-0.2 wt% of ethylparaben and 51.6-64.9 wt% of water. The medicinal gel disclosed by the invention can realize long-term drug release; By employing a percutaneous drug deliveryway, the drug can play a very good slow-release role in a human body, and the drug can be prevented from extravasation, and is released for a long time.

The invention discloses a preparation method of a crisaborole intermediate product. The crisaborole intermediate product has a structure represented by a general formula A1. The preparation method comprises the following steps: S1, adding a compound represented by a chemical formula II into an organic solvent, adding an acidic material, and carrying out a reaction to obtain a compound represented by a chemical formula III. The invention also discloses a preparation method of the crisaborole, which comprises the preparation method of the intermediate product of the crisaborole, and further comprises the following steps: adding the compound represented by a chemical formula VI into an organic solvent, carrying out contact reaction on the compound and bis (pinacolato) diboron under an alkaline condition and a palladium catalyst, and cyclizing under an acidic condition to obtain the crisaborole. According to the present invention, the yield and the safety performance of the whole process can be improved, the process production process is optimized, the excellent mass production method is provided for the crisaborole, and the crisaborole can be well applied to the industrial production.

A crisaborole sustained-release film having good sustained release effects and a preparing method thereof are disclosed. The film is prepared from an active component, a plasticizer, a filler, an absorption promoter, a suspending aid and an adhesive. The film can overcome a problem that medicine use frequency is over-high and can provide longer skin residence time and a decreased number of times of administration. A plurality of film forming auxiliary materials, which supplement each other and which are integral, are adopted to prepare the film, the plasticizer and the filler enhance film forming performance, the absorption promoter enhances medicine infiltration capacity, the suspending aid ensures dispersibility of raw materials in a liquid state, and the adhesive enhances the degree ofadhesion between the film and skin.

The invention discloses a method for synthesizing a crisaborole intermediate by using a microchannel reactor. The method comprises the following steps: dissolving an intermediate a in an organic solution b, uniformly mixing to obtain a material 1, and conveying the material 1 to a pre-cooling module in the microchannel reactor through a plunger pump for mixing and pre-cooling. According to the present invention, the crisaborole intermediate is synthesized by using the microchannel reactor, the continuous online mixing, pre-cooling and reaction of the reaction material liquid can be achieved due to the unique microstructure design of the microchannel reactor, and the mixing reaction can be completed in the short time even if the two-phase or the three-phase is not dissolved, compared with the traditional stirring hydrogenation reaction kettle, the mixing efficiency is improved by more than 100 times, the whole reaction time can be shortened from several hours to about 30 seconds, the impurity content of the product can be greatly reduced due to overhigh local concentration in the process, the purity and the yield of the product are improved, and the safety is also greatly improved.

The invention provides the application of a phosphodiesterase inhibitor or a pharmaceutical composition of the phosphodiesterase inhibitor in preparation of medicines for treating novel coronavirus pneumonia, screening of systematic biology and cellular level experiments verify that zardaverine, Pimobendan and crisaborole can inhibit proliferation of novel coronavirus to different degrees on the cellular level; wherein zardaverine has the strongest anti-new coronavirus effect, Pimobendan has the second anti-new coronavirus effect, and zardaverine, Pimobendan and crisaborole can be used for preparing medicines for treating novel coronavirus pneumonia.

The invention discloses a preparation method of a skin-touch crisaborole slow-release film. The skin-touch crisaborole slow-release film is prepared from the following raw materials: an active component, a plasticizer, a filling agent, an absorption promoter, a suspending agent and an adhesive. According to the preparation method disclosed by the invention, the problem that the utilization frequency of a drug is too high is solved, longer skin retention time is provided and the number of times of drug administration is reduced; a film agent is prepared by matching various film-forming auxiliary materials and the materials are complementary to each other and are necessary; the film forming property is enhanced through the plasticizer and the filing agent and the penetration capability of the drug is enhanced through the absorption promoter; the dispersity of the raw materials under a liquid state is ensured through the suspending agent and the fitting degree between the film agent and skin is enhanced through the adhesive.