82 results about "Anastrozole" patented technology

A process for making anastrozole using a 1-substituted triazole can reduce formation of the undesired iso-anastrozole. A typical process is represented by

wherein compound (10) is a 1-substituted triazole and compound (1) is anastrozole.

The present invention provides an improved process for preparing Anastrozole.

The invention belongs to medical technology, in particular to a dispersible tablet form of anastrozole. Through a large number of clinical investigations, we have overcome the technical prejudice that anastrozole does not need to be developed into dispersible tablets in the prior art, and obtained the present invention. Clinical experiments have confirmed that the adverse reactions of the present invention are significantly reduced, and the compliance of medication is significantly improved. Obtained unexpected clinical efficacy. It has the characteristics of low production cost, stable preparation, fast absorption and high bioavailability. The invention is suitable for treating advanced breast cancer of postmenopausal women, and provides a good therapeutic drug dosage form for breast cancer patients.

The invention relates to anticancer sustained release injection which comprises sustained release microspheres and menstruum, wherein, the sustained release microspheres comprise anticancer active components and sustained release auxiliary material; the menstruum is special menstruum that contains suspending agent. The anticancer active components are fotemustine, nimustine, carmustine or combination of bendamustine and mitozolomide, docetaxel, etoposide, teniposide, vinblastine, anastrozole, tamoxifen, fluorouracil or mitomycin C; the sustained release auxiliary material is polylactic acid and polylactic acid copolymer, polyethylene glycol and polylactic acid copolymer of polyethylene glycol, terminal carboxyl group polylactic acid copolymer, EVAc, fatty acid and decanedioic acid copolymer, etc.; viscosity of the suspending agent is 100cp-3,000cp (at 25 DEG C-30 DEG C), and the suspending agent is selected from sodium carboxymethylcellulose, etc. The sustained release microspheres can also be made into sustained release implant; the injection or implant is injected or placed in or around tumor so as to reduce general reaction of the drug and selectively improve and keep local concentration for about 30-50 days. The anticancer sustained release injection can be used solely and can also promote anti-tumor effects of non-operative treatments, such as chemotherapy and/or radiotherapy, etc.

The present invention relates to a pharmaceutical product for administration to a patient, the product comprising 4′-cyano-α′,α′,α′-trifluoro-3-(4-fluorophenylsulphonyl)-2-hydroxy-2-methylpropiono-m-toluidide, or a pharmaceutically acceptable salt or solvate thereof, in solid dispersion with an enteric polymer having a pK_a from 3 to 6, the product further comprising an anti-oestrogen (eg, tamoxifen citrate) and/or an aromatase inhibitor (eg, anastrozole). The invention also relates to a pharmaceutical dose of the drug and anti-oestrogen/aromatase inhibitor provided by such a formulation. An advantage is the treating and/or preventing of at least one side effect selected from gynaecomastia, breast tenderness, hot flushes, impotence and reduction in libido, while increasing the bioavailability of the drug; reducing inter-patient variability in plasma concentrations of the 4′-cyano-α′,α′,α′-trifluoro-3-(4-fluorophenylsulphonyl)-2-hydroxy-2-methylpropiono-m-toluidide; enhancing the storage stability of the drug; and/or treating and/or reducing the risk of prostate cancer in a patient.

Disclosed is a prescription composition of a drug compound containing granules for oral administration and the preparation process, characterized in that the granule contains anastrozole, filler and other pharmaceutical excipient. The anastrozole is produced into suitable preparation with good bioavailability and drug stability in the preparation process.

The invention discloses granulating equipment. The granulating equipment comprises a pressure tank and a mixed granulating machine, the pressure tank is arranged on the left side of the mixed granulating machine, the upper portion of the pressure tank is provided with a compressed air connector, the bottom of the pressure tank is provided with a connection hose, and the connection hose is used for being connected with the pressure tank and the mixed granulating machine. The granulating equipment further comprises a sprinkler, the top of the sprinkler is provided with holes, and the sprinkler is arranged on the upper half portion of the mixed granulating machine and is connected with the connection hose through a connection pipe. The granulating equipment is suitable for preparing solid preparations like capecitabine tablets, moxifloxacin hydrochloride tablets, Letrozol tablets, anastrozole tablets, repaglinide tablets, acarbose chewable tablets and tacrolimus capsules. The granulating equipment is easy and convenient to operate; the prepared particles are good in mobility and compressibility; the manufactured preparations are smooth and attractive in appearance and free of spots on surfaces, meanwhile, the quality indexes like disintegration time, the dissolution rate and the content uniformity all accord with or exceed inner quality standards, and finally the solid preparations with good quality can be obtained.

The invention relates to a novel synthesis process of pharmaceutical intermediate 3, 5-bi(2-cyanoindole-isopropyl)-toluene, belonging to the chemical synthesis technology field. The invention uses 5-methyl-1, 3-dimethyl phthalate as the material, synthesizes anastrozole intermediate 3, 5-bi(2-cyanoindole-isopropyl)-toluene by esterification, reduction, brominating, cyaniding and methylation reaction. The reduction method using borohydrides is performed in aether solvent, the method can completely avoid using high-toxicity solvent such as CCl4 or the like; in the methylation reaction, expensive iodomethane is replaced by p-toluenesulfonic acid methyl; the purity of product 3, 5-bi(2-cyanoindole-isopropyl)-toluene (2) is high.

The invention relates to a temperature-controlled sustained-release injection containing a hormone anti-cancer drug, which comprises the anti-cancer drug, an amphiphilic block copolymer, a solvent and a certain amount of drug release regulator, wherein, the mixture of the amphiphilic block copolymer and a solvent without organic solvent has the temperature-sensitive gelatinization feature, which is flowable liquid in the environment that is lower than the body temperature and can be automatically converted to the water-insoluble gel that can not flow and be biodegradable for absorption in an endotherm, and the water-insoluble gel can allow the contained hormone anti-cancer drug to have the local sustained release in a tumor and maintain the effective drug concentration for a plurality of weeks to a plurality of months; the viscosity of the temperature-controlled sustained-release injection is 10cp to 3000cp ( at 5 DEG C to 30 DEG C ), and the gelatinization temperature is 35 DEG C to 37 DEG C. The sustained-release injection can be injected in the tumor or the tumor periphery or be arranged in the postoperative tumor cavity, thus significantly reducing the systemic reaction of the drug, selectively strengthening the treatment effects of chemotherapy, radiotherapy and other non-surgical therapies, and being used for the treatment of the tumors in different stages. The anti-cancer drug can be triptorelin, goserelin, leuprorelin, anastrozole, idoxifene, tamoxifen and other hormone anti-cancer drugs.

The invention discloses a method for preparing anastrozole. The anastrozole is prepared by using a,a,a',a',5-pentamethyl-1,3-diacetonitrile benzene as a starting material, bromizing under the action of a brominating agent NBS to generate a midbody 3,5-bi[(2,2-dimethyl)cyan methyl]-benzyl bromide, and catalyzing and condensing the midbody with 1,2,4-triazole in water and organic solvent by phase transfer to prepare anastrozole. The method has the advantages of simplicity in operation, mild reaction condition, high yield and high purity of products, and is suitable for industrial production of anastrozole.

Formulations and methods for transdermal drug delivery compositions that include anastrozole are disclosed. Transdermal anastrozole compositions of the present disclosure may be indicated for treating testosterone deficiency. Disclosed transdermal anastrozole compositions may include permeation enhancers that may improve penetration of anastrozole in human skin. Permeation enhancers within transdermal anastrozole compositions may include oils from Amazon rainforest such as Pracaxi oil, Plukenetia volubilis seed oil, Inaja oil, and Patauá oil, which includes behenic and oleic fatty acids that may provide penetration power. Transdermal anastrozole may include organic solvents as transdermal penetration enhancers. Additionally, transdermal anastrozole compositions may include physiological lipids, phospholipids, and one or more butters rich in linoleic acid and linolenic acid that may also provide penetration power with restorative benefits to the skin.

The invention relates to an external patch containing anastrozole and a preparation method thereof. The external preparation uses anastrozole as a main drug, and is used for treating breast cancer. The external patch containing anastrozole is absorbed in a percutaneous manner, is uniform in drug release and mild and durable in action. One patch can be continuously used for 7 days. The patch directly acts on skin without passing through gastrointestinal tracts, so that the first pass effect of liver can be avoided, adverse response is reduced, and the occurrence rate of adverse responses is reduced. The external patch has good patient compliance, and is convenient to use and carry.

A process for the preparation of anastrozole which comprises: a) brominating 3,5-bis(2-cyanoprop-2-yl)toluene (II) in an organic solvent using a brominating agent to obtain 3,5-bis(2-cyanoprop-2-yl)benzylbromide (III); b) heating the reaction mass of step a) to the reflux temperature of the organic solvent for a period of time no longer than 3 hours; c) isolating and purifying the bromo intermediate (III) using an organic solvent; d) alkylating the bromo intermediate in the presence of a base, optionally a phase transfer catalyst, a 1,2,4-triazole and an organic solvent to obtain anastrozole; and e) isolating and purifying the anastrozole from an organic solvent.

The invention belongs to the field of pharmaceutical technology, disclosing an anastrozole controlled release patch and a preparation method thereof. The invention comprises a back lining layer, a medicine reservoir and an anti-sticking layer, wherein, the medicine reservoir comprises remedium cardinale anastrozole, pressure sensitive adhesive and sorbefacient by skin, wherein, the anastrozole accounts for 0.5-30wt%, the pressure sensitive adhesive accounts for 70-90wt% and the sorbefacient by skin accounts for 0.5-50wt%; inert filler, plasticizer, tackifier, chemical inhibitor and the like can also be added to the list. The anastrozole, the pressure sensitive adhesive and the sorbefacient by skin are fully mixed and transferred to be coated on the anti-sticking layer for being dried at the temperature of 40-80 DEG C, and then the mixture are compounded by using PVC or lining materials without woven fabrics and made into the patch of different sizes and specifications by die cutting, thus obtaining the finished product. The patch can not only avoid stimulus to the gastrointestinal tract by oral medication but also reduce the toxic side effect of the medicine by slow release; the release lasts for at least 7 days, thus ensuring lasting and stable therapeutical efficiency; if medicine administration is desired to be halted, removing the patch can achieve the purpose; the patch features convenient use; in addition, the patch is flexible and appropriately adhesive.

This invention relates to the treatment of breast cancer in a subject, for example a female subject. Including methods of: treating metastatic breast cancer; refractory breast cancer; AR-positive breast cancer; AR-positive refractory breast cancer; AR-positive metastatic breast cancer; AR-positive and ER-positive breast cancer; triple negative breast cancer; advanced breast cancer; breast cancer that has failed selective estrogen receptor modulator (SERM) (tamoxifen, toremifene, raloxifene), gonadotropin-releasing hormone (GnRH) agonist (goserelin), aromatase inhibitor (AI) (letrozole, anastrozole, exemestane), cyclin-dependent kinase 4/6 (CDK 4/6) inhibitor (palbociclib (Ibrance), ribociclib (Kisqali), abemaciclib (Vorzenio)), mTOR inhibitor (everolimus), trastuzumab (Herceptin, ado-trastuzumab emtansine), pertuzumab (Perjeta), lapatinib, neratinib (Nerlynx), olaparib (Lynparza) (an inhibitor of the enzyme poly ADP ribose polymerase (PARP)), bevacizumab (Avastin), and/or fulvestrant treatments; metastasis in a subject suffering from breast cancer; HER2-positive; and/or treating a subject suffering from ER mutant expressing breast cancer, comprising administering to the subject a therapeutically effective amount of a selective androgen receptor modulator (SARM) compound.

The invention relates to anticancer sustained release injection which comprises sustained release microspheres and menstruum, wherein, the sustained release microspheres comprise anticancer active components and sustained release auxiliary material; the menstruum is special menstruum that contains suspending agent. The anticancer active components are fotemustine, nimustine, carmustine or combination of bendamustine and mitozolomide, docetaxel, etoposide, teniposide, vinblastine, anastrozole, tamoxifen, fluorouracil or mitomycin C; the sustained release auxiliary material is polylactic acid and polylactic acid copolymer, polyethylene glycol and polylactic acid copolymer of polyethylene glycol, terminal carboxyl group polylactic acid copolymer, EVAc, fatty acid and decanedioic acid copolymer, etc.; viscosity of the suspending agent is 100cp-3,000cp (at 25 DEG C-30 DEG C), and the suspending agent is selected from sodium carboxymethylcellulose, etc. The sustained release microspheres can also be made into sustained release implant; the injection or implant is injected or placed in or around tumor so as to reduce general reaction of the drug and selectively improve and keep local concentration for about 30-50 days. The anticancer sustained release injection can be used solely and can also promote anti-tumor effects of non-operative treatments, such as chemotherapy and/or radiotherapy, etc.

The invention discloses a novel method for synthesizing anastrozole, and belongs to the technical field of medicinal chemistry. The method comprises the following steps: 3,5-dibromo toluene used as a starting material reacts to produce 3,5-dibromo methyl toluene under the effect of a brominating agent NBS (N-bromosuccinimide), and reacts to produce an intermediate 3,5-bis[(2,2-dimethyl) cyano methyl]- bromo methyl benzene through a cyanidation reaction, a methylation reaction and a bromination reaction; and then the intermediate reacts with 1,2,4-triple nitrogen oxazole sodium to produce the anastrozole. The novel method is characterized in that the second step of cyano substitution reaction is improved. The method has the advantages that the process is simple, the efficiency is greatly improved, the yield is improved to 83 percent to 88.20 percent, the cost is reduced, the solvent use amount is reduced, the environment is further protected, and little side reaction is caused; and as the cost is reduced, the method is very beneficial to and suitable for industrialized production.