117 results about "Afatinib" patented technology

The invention provides a novel synthesis method for afatinib. The afatinib is prepared by activating or chlorinating dimethylamino crotonic acid hydrochloride by using an amide connection reagent and then reacting with N<4>-(3-chloro-4-fluoro-phenyl)-7-((S)-tetrahydrofuran-3-oxy)quinazoline-4,6-diamine. The invention further provides a process of preparing dimethylamino crotonic acid hydrochloride and an intermediate thereof. The method for preparing the afatinib provided by the invention has the advantages of low production cost, small environmental pollution, and simplicity and convenience in operation and is suitable for industrial production.

The invention relates to a liquid phase separation detection method of afatinib and enantiomer of the afatinib, and belongs to the technical field of separation detection. The method comprises the step of carrying out isocratic elution by adopting 250mm*4.6mm and 5 micrometers CHIRALPAK OZ-H chiral chromatographic column as a separation chromatographic column and adopting a mixed solution of n-hexane, ethanol, methanol and diethylamine as a flow phase. By adopting the method, the afatinib and an enantiomer impurity of the afatinib can be effectively separated and detected, and the peak pattern of a chromatographic peak is good.

The invention relates to the technical field of analytical chemistry and discloses a method for detecting afatinib dimaleate isomer and main degradation impurities through a high performance liquid chromatography.According to the method, afatinib dimaleate raw materials or preparations are compounded into a detection solution with diluent, bonding amylose-trichlorobenzene carbamic acid ester serves as a stationary phase, a normal hexane-ethanol-organic base solution serves as a mobile phase for isocratic elution, and an HPLC spectrogram is recorded under afatinib absorption wavelength.According to the method, a chromatographic column with trichlorobenzene carbamic acid ester serving as a filling material, the normal hexane-ethanol-organic base solution serves as the mobile phase, the content of isomers existing in afatinib dimaleate and preparations thereof can be measured quantitatively, afatinib, the isomers and the main impurities can be separated completely, the peak pattern is good, the method meets the specifications in Chinese Pharmacopoeia, quality of afatinib dimaleate and afatinib dimaleate preparation products is effectively controlled, and the method is great in specificity, high in sensitivity and good in accuracy.

The invention discloses a medicinal composition for resisting non-small cell lung cancer. The active components of the medicinal composition comprise an artemisinin derivative and EGFR-TKI (epidermal growth factor receptor-tyrosine kinase inhibitor), wherein the artemisinin derivative is selected from one of dihydroartemisinin, artesunate, artemether and arteether; and the EGFR-TKI is selected from one of gefitinib, erlotinib, afatinib and osimertinib. The invention also discloses application of the medicinal composition to preparation of medicines for treating and resisting the non-small cell lung cancer. When the medicinal composition provided by the invention is used for treating the non-small cell lung cancer, the medicinal effect which is more excellent than that of the singly used EGFR-TKI can be achieved, the sensitizing effect is achieved, the problem of partial medicine resistance of the non-small cell lung cancer EGFR-TKI is solved, and a scientific basis is provided for the development of new medicines.

The invention provides a novel preparation method of an afatinib compound. Raw materials and reagents used in the preparation method have the advantages of low cost, stable chemical property and convenience in long-term storage and the content of an impurity cis-isomer in the prepared afatinib compound is very low.

The invention discloses an Afatinib (I) preparation method which comprises the following steps: performing etherification reaction on 4-chloro-6-amino-7-hydroxyquinazoline (II) and (S)-3-hydroxytetrahydrofuran to generate 4-chloro-6-amino-7-[(S)-(tetrahydrofuran-3-yl)oxy]quinazoline (III); performing acylation reaction on the compound (III) and 4-(N,N-dimethylamino)-2-ene-butyryl chloride to generate 4-chloro-6-{[4-(N,N-dimethylamino)-1-oxo-2-butene-1-yl]amino}-7-[(S)-(tetrahydrofuran-3-yl)oxy]quinazoline (IV); and performing condensation reaction on the compound (IV) and 4-fluoro-3-chloroaniline to obtain Afatinib (I). The preparation method is simple, economic and environment-friendly in process, and meets the requirements for large-scale industrialization.

The present invention relates to a high purity preparation method of Afatinib intermediate, and particularly relates to a high purity preparation method of an antineoplastic treatment medicine maleate Afatinib intermediate (II) compound, the method comprises the following steps: an objective product is obtained sequentially through substitution in two steps, reduction reaction and the like of 6-amino-7-fluoro-3,4-dihydro-quinazolin-4-one. The method is simple in process, economic and environmental-friendly, and suitable for industrial amplification requirements, and the manufactured finished product is high in purity.

The invention relates to a method for detecting Afatinib, relevant substances thereof, and especially cis-isomers thereof. The method comprises the following steps: carrying out gradient elution by using a high performance liquid chromatograph, wherein Phenomenex C18 (250mm*4.6mm, 5[mu]m) is adopted as a chromatographic column, an aqueous solution containing 0.2% of formic acid and 0.1% of trifluoroacetic acid is adopted as a mobile phase A, acetonitrile is adopted as a mobile phase B, the detection wavelength is 255-265nm, and the column temperature is 35-45DEG C; and carrying out gradient elution under certain conditions. The method can effectively separate and detect Afatinib, relevant substances thereof, and especially cis-isomers thereof.

The invention relates to a crystal form of afatinib di-meleate, a method for preparing the crystal form, pharmaceutical composition with the same and application of the pharmaceutical composition. X-ray powder diffraction spectra of the crystal form have characteristic peaks at diffraction angles 2theta of 4.9+/-0.2 degrees, 10.5+/-0.2 degrees, 12.8+/-0.2 degrees, 17.2+/-0.2 degrees and 19.8+/-0.2 degrees, and a melting point of the crystal form is 168.68. The crystal form, the method, the pharmaceutical composition and the application have the advantage that the pharmaceutical composition can be applied to anti-cancer medicine.

The invention discloses a method for preparing Afatinib (I). The method comprises the following steps: 2-cyano-4-[4-(N,N-dimethylamino)-1-oxo-2-buten-1-yl]amino-5-[(S)-(tetrahydrofuran-3-yl)oxy]aniline (II) and N,N-dimethylformamide dimethylacetal (DMF-DMA) are subjected to condensation reaction so as to produce an intermediate (III), and the intermediate (III), without to the need of separation, is directly subjected to cyclization reaction with 4-fluoro-3-chloroaniline so as to prepare Afatinib (I). According to the method, the steps for preparing Afatinib are reduced obviously, and the cost is reduced greatly.

The invention discloses a method for preparing Afatinib. The method comprises the following steps: 4-fluoro-3-chloroaniline and N,N-dimethylformamide dimethylacetal (DMF-DMA) are subjected to condensation reaction so as to produce a Schiff base (III), and the Schiff base (III), without to the need of separation, is subjected to cyclization reaction with 2-cyano-4-[4-(N,N-dimethylamino)-1-oxo-2-buten-1-yl]amino-5-[(S)-(tetrahydrofuran-3-yl)oxy]aniline so as to prepare Afatinib. According to the method, the steps for preparing Afatinib are reduced obviously, and the cost is reduced greatly.

The invention discloses a preparation method of an afatinib intermediate. The preparation method comprises the following steps of: sequentially carrying out nitrification, etherification, reduction, amidation, nitrification and reduction on 4-cyanol phenol serving as the starting raw material to prepare 2-cyano-4-[4-(N,N-dimethylamino)-1-oxo-2-butene-1-yl]amino-5-[(S)-tetrahydrofuran-3-yl]oxy]phenylamine (I). The preparation method has the advantages that the process is stable, raw materials are easily available, cost is low and all reactions are classic reactions; therefore, the preparation method meets the requirement of industrial amplification.

The invention discloses an EGFR inhibitor for targetedly treating a cancer and a preparation method and application thereof.The structural formula of the EGFR inhibitor is shown in the formula I.The EGFR inhibitor can be used for preventing and/or treating the cancer such as a human skin caner or a lung cancer.The EGFR inhibitor can selectively inhibit cell lines of EGFR double mutation (EGFRT790M and L858R), and the inhibitory activity to EGFR wild type cells is weak; therefore, the EGFR inhibitor can be used for treating lung cancer patients with EGFRT790M and L858R mutation, and the side effects are fewer, wherein the side effects are caused by inhibiting wild type EGFR, for example, Afatinib.

The invention discloses an EGFR (epidermal growth factor receptor) inhibitor for targeted therapy of cancers, and a preparation method and application thereof. The structural formula of the EGFR inhibitor is disclosed as Formula I, wherein R is H, OH, NR', C1-C3 alkyl, C1-C3 alkenyl, aryl or heterocycle, and R' is C1-C3 alkyl. The EGFR inhibitor can be used for preventing and/or treating cancers, such as human skin squamous carcinoma or lung cancer. Compared with the existing inhibitors (such as AZD9291, afatinib and the like), the EGFR inhibitor disclosed by the invention has novel chemical structure. The EGFR inhibitor can selectively inhibit cell lines of EGFR double mutants (EGFRT790M/L858R), and has lower inhibition activities for EGFR wild type cells. Therefore, the EGFR inhibitor disclosed by the invention can be used for treating the patient with lung cancer with EGFRT790M/L858R mutants, and has lower side effect (caused by the inhibition of the wild type EGFR, such as afatinib).

The invention discloses a high-purity afatinib preparation method, which comprises: (1) adding a trans-4-dimethylaminocrotonic acid hydrochloride to the mixed solvent of N-methylpyrrolidone and ethyl acetate, cooling, adding thionyl chloride to the system in a dropwise manner, and stirring until the reaction is completely performed; (2) dissolving N4-(3-chloro-4-fluoro-phenyl)-7-(S)-tetrahydrofuran-3-yloxy)quinazoline-4,6-diamine by using N-methylpyrrolidone, adding the obtained solution to the reaction system obtained in the step (1), and stirring until the reaction is completely performed; and (3) adding purified water to the reaction system obtained in the step (2), quenching the reaction, adjusting the pH value with a sodium hydroxide solution, extracting with ethyl acetate, carrying out pressure reducing concentration, carrying out cooling crystallization, carrying out suction filtration, and drying to obtain the high-purity afatinib product. According to the present invention, the post-treatment of the preparation method is simple and convenient, the high purity product can be obtained without the additional refining, and the preparation method is suitable for industrial large-scale production.

The invention relates to the field of medicines, particularly relates to an application of curcumin and afatinib as well as a pharmaceutically acceptable salt thereof for combined treatment of non-small cell lung cancer, and more particularly relates to the application for combined treatment of non-small cell lung cancer having drug resistance for gefitinib and erlotinib.

The invention relates to a novel Afatinib-maleate crystal form and a preparation method thereof. Compared with a known Afatinib salt crystal form, the Afatinib-maleate crystal form provided by the invention has a plurality of improved characteristics. The invention also relates to pharmaceutical compositions containing the Afatinib-maleate crystal form, and application in preparation of drugs used for treatment of advanced non-small cell lung cancer (NSCLC) and HER2 positive advanced breast cancer.

The invention provides a preparation method for afatinib. The preparation method comprises the following steps: subjecting trans-4-dimethylaminocrotonic acid hydrochloride (III) to chlorination so as to obtain trans-4-dimethylaminocrotonyl chloride hydrochloride (IV); and reacting the compound (IV) with N4-(3-chloro-4-fluoro-phenyl)-7-((S)-tetrahydrofuran-3-yl-oxy)quinazoline-4,6-diamine (V) so as to prepare afatinib (VI). Reaction equations are described in the specification.

The invention relates to a compound, and a preparation method and application thereof. Specifically, the compound is as shown in a formula 1 which is described in the specification. The invention also provides the preparation method for the compound as shown in the formula 1. The preparation method comprises a step of contacting N-[4-[(3-chloro-4-fluorophenyl)amino]-7[[(3S)-tetrahydro-3-furyl]oxy]-6-quinazolinyl]-4-(dimethylamino)-2-butyleneamide with an alkaline aqueous solution in an organic solvent so as to obtain the compound as shown in the formula 1. The preparation method is simple to operate; a white powder product can be obtained through direct filtering after post-treatment; and the prepared compound has high purity, as high as 99% or above, and can be directly used as an impurity control substance for research on the quality of an afatinib bulk drug.

The invention firstly provides a composition containing a protein kinase inhibitor and metformin or pharmaceutically acceptable salts thereof. The composition is characterized in that the protein kinase inhibitor is one selected from nilotinib, pazopanib, afatinib, bosutinib, crizotinib, axitinib and regorafenib or pharmaceutically acceptable salts or solvates thereof or solvates of the pharmaceutically acceptable salts thereof, and the molar ratio of the metformin to the protein kinase inhibitor is (0.01-100):1. In-vitro bacteriostatic tests find that the composition containing the metforminand the protein kinase inhibitor can achieve a synergistic bacteriostatic effect on various bacteria such as staphylococcus aureus in the molar ratio of (0.01-100):1 (at an inhibition rate of 30%, thecombined medication index CI is smaller than 1).

The invention provides a method of blocking transmission of a Plasmodium parasite and a method of treating or preventing malaria comprising administering to an animal an effective amount of a first compound of formula I: wherein A, B, R¹, R², R¹⁰, and R¹¹ are described herein, either alone or in combination with a second compound selected from elesclomol, NSC 174938, NVP-AUY922, Maduramicin, Narasin, Alvespimycin, Omacetaxine, Thiram, Zinc pyrithione, Phanquinone, Bortezomib, Salinomycin sodium, Monensin sodium, Dipyrithione, Dicyclopentamethylene-thiuram disulfide, YM155, Withaferin A, Adriamycin, Romidepsin, AZD-1 152-HQPA, CAY10581, Plicamycin, CUDC-101, Auranofin, Trametinib, GSK-458, Afatinib, and Panobinostat.

The invention discloses a synthesis method of an anti-tumor medicine afatinib and belongs to the technical field of pharmaceutical chemistry. The method takes 2-nitryl-5-bromophenol as a raw material and obtains the afatinib through a five-step chemical reaction. The raw material of a synthesis route is easy to obtain, a process route is shortened, the operation is simple and the yield of products is high; and industrial production is easy to realize.

The invention provides a preparation method of an Afatinib intermediate and particularly provides a preparation method of N<4>-(3-chloro-4- fluorophenyl)-7-[[(3S)-tetrahydro-3-furyl]oxy]-4,6-quinazoline diamine. According to the method, 4-[(3-chloro-4-fluorophenyl)amino]-6-nitro-7-((S)-tetrahydrofuran-3-yloxy)-quinazoline, zinc powder and an acidic material are mixed in a mixed solvent of a polar solvent and water for a reduction reaction, a product is filtered and alkalified, and the Afatinib intermediate is obtained. The preparation method has the advantages of high product yield, low pollution degree, low production cost and the like.

The invention relates to a synthetic method for an afatinib intermediate. The method comprises the step of: carrying out a reaction on (S)-N-(3-floro-4-fluorophenyl)-6-nitryl-7-[(tetrahydrofuran-3-yl)oxy]quinazoline-4-amine and sodium hydrosulfite. The method provided by the invention not only obtains a high yield, but also simplifies the post-treatment of reaction.