47 results about "Butenamide" patented technology

The invention discloses a preparation method of neratinib (I). The preparation method comprises the step that 6-[(E)-4-(dimethylamino)-2-butenamide]-7-ethoxy-4-amino-3-quinolinecarbonitrile (II) and 3-chloro-4-[(pyridine-2-yl)methoxy]-benzaldehyde (III) carry out condensation and reduction reactions to obtain neratinib (I). The preparation method is easy in obtainment of raw materials, concise in process, economical and environment-friendly and suitable for industrial production.

The invention relates to the field of pharmaceuticals, in particular to a preparation method of neratinib. The preparation method specifically includes: successively condensing 6-[(E)-4-(dimethylamino)-2-butenamido]-7-ethoxy-4-chloro-3-cyanoquinoline (I) with 2-chloro-4-aminophenol (II) and 2-(chloromethyl)pyridine hydrochloride (III) through an intermediate (E)-N-{4-[3-chloro-4-hydroxyanilino]3-cyano-7-ethoxy-6-quinoline}-4-dimethylamino-2-butenamide (IV). The materials in the preparation method are easy to obtain, and the preparation method is simple, green and economical and has greatly worthy of application.

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 present invention discloses a pharmaceutical composition and a preparation method thereof, particularly to a pharmaceutical composition, which comprises an active substance (2E)-N-(4-((3-chloro-4-fluorophenyl)amino)-7-(((3S)-tetrahydro-3-furanyl)oxy)-6-quinazolinyl)-4-(dimethylamino)-2-butenamide dimaleate, a carrier, a disintegrant, a glidant and a lubricant. The composition of the present invention is hardly electrostatically charged, and is suitable for being directly prepared into the solid preparation. The present invention further discloses a solid preparation prepared from the composition.

The invention discloses a preparation method of an EGFR molecular targeting antitumor drug. The EGFR molecular targeting antitumor drug is (E)-N-[4-(3-acetylenephenyl)-amino-3-cyano-7-ethoxy-6-quinolyl]-4-(dimethylamino)-2-buteneamide. The preparation method of the EGFR molecular targeting antitumor drug comprises the following step: carrying out a heating substitution reaction on N-(4-chloro-3-cyano-7-ethoxyquinoline-6-yl)acetamide and m-aminophenylacetylene under the condition that n-propanol is used as a reaction solvent. The method has the advantages of easily available raw materials, simple process, short reaction time, low impurity content, high yield, suitability for industrial production and the like.

Disclosed are 4-amino-2-butenamides of Formula (I) having pharmacological activity, pharmaceutical compositions containing them, and methods for the treatment of diseases mediated by the cathepsin C enzyme such as chronic obstructive pulmonary disease.

The invention relates to a synthesis method for trans N-ethyl-N-(2'-alkyl phenyl)-2-butenamide. The method comprises the steps of: 1) adding trans 2- butenoic acid into a reaction bottle, conducting dilution with an alkane solvent, performing cooling to 0-10DEG C, adding thionyl chloride dropwise, and then carrying out reaction at 10-50DEG C for 3-4h for standby use; 2) adding N-ethyl-2-alkyl aniline into the reaction bottle, conducting dilution with an alkane solvent, adding an alkaline aqueous solution, subjecting the mixed solution to stirring reaction at room temperature, adding the mixed solution obtained in step 1) slowly in a dropwise manner, and then carrying out reaction at 60-90DEG C for 5-6h at the end of dropwise adding; and 3) at the end of the reaction, separating out the organic phase, and washing the organic phase to neutral by water, conducting room temperature distillation to remove the solvent, and then performing pressure reduced distillation to separate the product. The method is simple, has high product yield, and can produce the high purity trans-structure product.

The invention relates to a quinazoline derivative shown in a formula (1) and a pharmaceutically acceptable salt thereof. In the formula (1), R<1> is selected from one or more halogens, trifluoromethyl, trifluoromethoxy, nitro, cyano, hydroxyl or sulfonyl isopropyl; R<2> is selected from methoxy, ethoxy, 3-methyl ether ethoxy, 4-methylpiperazine ethoxy, 4-(N,N-dimethyl)amino-2-butene acylamino or 2-morpholine ethoxy; and R<3> is selected from methyl, ethyl or acetyl. The quinazoline derivative provided by the invention, pharmaceutically acceptable salts, solvates, stereoisomers and prodrugs ofthe quinazoline derivative all have remarkable EGFR inhibitory activity, have high in-vitro inhibitory activity on EGFR, T790M and C797S drug resistance mutation, and have remarkable curative effectsin treatment of EGFR-related diseases.

The invention relates to a crystal form C of (2E)-N-[4-[(3-chloro-4-fluorophenyl) amino]-7-methoxy-6-quinazolinyl]-4-(1-piperidinyl)-2-buteneamide, a preparation method thereof and a medicine containing the crystal form C. The crystal form C is an anhydrous substance, Cu-K alpha radiation is used, and the crystal form C has an X-ray powder diffraction pattern with characteristic peaks at diffraction angles 2theta of 5.6 +/- 0.2 degrees, 10.5 +/- 0.2 degrees and 12.8 +/- 0.2 degrees. The crystal form C is the anhydrous substance and has obvious advantages in medicine development compared with an existing solvate, in addition, the solubility of the crystal form C is remarkably improved compared with that of the existing solvate on the premise that good stability is kept.

A method has been developed to prepare (E)- and (Z)-2-methyl-2-butenoic acids (2M2BA) from a mixture of (E,Z)-2-methyl-2-butenenitriles (2M2BN) by the regioselective hydrolysis of (E)-2M2BN to (E)-2-methyl-2-butenoic acid (2M2BA) using enzyme catalysts having either a nitrilase activity or a combination of nitrile hydratase and amidase activities. The method provides high yields without significant conversion of (Z)-2M2BN to (Z)-2M2BA. The regioselective hydrolysis of (E)-2M2BN to (E)-2M2BA makes possible the facile separation of (E)-2M2BA from (Z)-2M2BN or (Z)-2-methyl-2-butenamide (2M2BAm), and the subsequent conversion of (Z)-2M2BN or (Z)-2M2BAm to (Z)-2M2BA.

The invention relates to a method for synthesizing a sulfur-containing gamma, gamma-bis-arylamine butyramide compound, which comprises the following steps of: stirring N-(2-(ethylthio)phenyl)butyl-3-acrylamide serving as a reaction substrate, arylamine serving as a nucleophilic reagent, palladium acetate serving as a catalyst, ferric trichloride and ferrous acetate serving as oxidants, benzoic acid serving as an additive and acetonitrile serving as a solvent, at 90 DEG C to react for 24 hours; and after the reaction is finished, filtering the reaction liquid, removing the solvent from the filtrate by using a rotary evaporator to obtain a residue, carrying out column chromatography separation on the residue by using a silica gel column, leaching the residue by using an eluent, collecting effluent containing a target product, combining the effluent, and carrying out vacuum concentration to remove the solvent to obtain the target product. The method has the advantages of simple and easily available raw materials, relatively mild reaction conditions, novel and simple preparation process, less pollution and low energy consumption.

The invention discloses a substituted butenamide-N-oxide as well as a preparation method and application thereof. The compound is prepared by carrying out oxidation reaction on a compound (E)-N-[4-(3-ethynylphenyl) amino-3-cyano-7-ethoxyquinoline-6-yl]-4-(dimethylamino) butyl-2-alkenyl amide or a salt thereof in a solvent. A pharmaceutical composition containing the compound can be used as a targeted drug for treating patients with tumors. Compared with the prior art, the N-oxide has a good anti-cancer effect, the application prospect of an anti-cancer treatment drug is increased, the process preparation and operation are relatively simple, the reaction time is short, few three wastes are generated, and the process is environmentally friendly.

The present invention addresses the problem of providing an antitumor agent for acute myeloid leukemia, the antitumor agent exhibiting practical effects on acute myeloid leukemia. According to the present invention, provided is an antitumor agent for acute myeloid leukemia, the antitumor agent containing a compound, such as (S,E)-N-(1-((5-(2-((4-cyanophenyl)amino)-4-(propylamino)pyrimidin-5-yl)-4-pentyn-1-yl)amino)-1-oxopropan-2-yl)-4-(dimethylamino)-N-methyl-2-butenamide, represented by general formula [1] specified in the present specification, or a salt thereof, wherein the amount of the antitumor agent administered per dose is within a predetermined range.

The invention relates to a preparation method for a refined material of crude trimesic acid. The preparation method comprises the following steps: adding, by weight, maleic anhydride, polyvinyl alcohol, 1,5,9,13-tetradeca-tetraene, 3-isopentyl(2-methyl-3-furyl)disulfide, furan-3-ylethynyltrimethylsilane, N-hydroxy-5-norbornene-2,3-dicarboximide perfluorobutylsulfonate, (2Z)-cyano-3-hydroxy-N-[4-(trifluoromethyl)phenyl]-2-butenamide, benzoyl peroxide, liquid wax and water into a reaction kettle, and carrying out uniform mixing under stirring; then carrying out heating for a reaction; after completion of the reaction, carrying out washing with gasoline so as to remove the liquid wax; and then successively carrying out washing with water and drying to obtain the refined material of crude trimesic acid.

The present invention relates to an improved process for the preparation of N-[4-[(3-chloro-4-fluorophenyl)amino]-7-[[(3S)-tetrahydro-3-furanyl]oxy]-6-quinazolinyl]-4-(dimethyl amino)-(2E)-2-butenamide (2Z)-2-butenedioate (1:2) represented by the following structural formula: