45 results about "Lenvatinib Mesylate" patented technology

The invention belongs to the field of pharmaceutical synthesis, and relates to impurities in a raw medical material production process and preparation methods of the impurities, in particular to preparation methods of process impurities A, B and C of lenvatinib mesylate, namely, 4-[3-chloro-4-(N'-cyclopropylureido) phenoxy]-7-methoxyquinoline-6-carboxamide mesylate), as a drug for treating radioiodine-refractory thyroid cancer and an application of the impurities to quality research of lenvatinib mesylate. With adoption of the methods, the process impurities A, B and C are obtained through chemical synthesis for the first time, and the target compounds shown in the description can be obtained through efficient and rapid separation.

The invention provides a medicinal composition containing lenvatinib. The medicinal composition comprises, by weight, 1-20% of lenvatinib mesylate, 20-60% of anhydrous calcium hydrogen phosphate, 10-55% of a filler, 5-35% of a disintegrating agent, 0-10% of an adhesive and 0.5-5% of a lubricant. Preferably, the particle size of the anhydrous calcium hydrogen phosphate is 200-600 meshes, or the D90 is about 20-75 [mu]m. The medicinal composition has good stability, has a dissolubility reaching 90% or above in 15 min, has effectively improved bioavailability, is easy to prepare, and is suitable for industrial production.

Biomarkers are provided that are predictive of a subject's responsiveness to a therapy comprising lenvatinib or a pharmaceutically acceptable salt thereof (e.g., lenvatinib mesylate). The biomarkers, compositions, and methods described herein are useful in selecting appropriate treatment modalities for a subject having cancer (e.g., thyroid cancer, kidney cancer), suspected of having cancer, or at risk of developing cancer.

The present disclosure relates to a novel crystalline form of lenvatinib mesylate and the preparation method thereof. The novel crystalline form of mesylate of the present disclosure can be used for treating invasive and differentiated thyroid cancer. The novel crystalline form of mesylate of the present disclosure has good solubility, stability, and remarkable purification effect in process. The preparation method of this novel crystalline form is simple, low cost, and has an important value for future optimization and development of the drug.

The invention discloses a crystal form of lenvatinib mesylate, a preparation method of the crystal form, a pharmaceutical composition containing the crystal form and application of the crystal form inpreparation of medicines for treating invasive and differentiated thyroid cancer. An X-ray powder diffraction pattern of the crystal form of lenvatinib mesylate comprises peaks at a diffraction angle(2) of about 16.1+/-0.2 degrees, 17.8+/-0.2 degrees, 18.8+/-0.2 degrees, 25.0+/-0.2 degrees and 25.4+/-0.2 degrees.

The invention belongs to the technical field of pharmaceutical chemicals and especially relates to a preparation method of a lenvatinib mesylate crystal form C. According to the method, the conditions of high temperature, acid serving as a solvent and the like are avoided, so that the content of impurities is greatly reduced, the purity is high, the yield is high, the purity is 99% or above and the yield is 95% or above. Therefore, the method is simple in process, convenient to operate, mild in condition, free of special reaction conditions, environmentally friendly and suitable for industrial production.

A preparation method of a lenvatinib mesylate crystal form X comprises the following steps that lenvatinib is stirred in acetonitrile and purified water and pulped, wherein the mass volume ratio of lenvatinib to acetonitrile to purified water is 1 g: (2-6 ml): (2-6 ml), and the stirring and pulping temperature is 20-30 DEG C; then, a mixed solution of acetic acid, acetonitrile and methanesulfonicacid is dropwise added, wherein the mass volume ratio of lenvatinib to acetic acid to acetonitrile is 1 g: (1-3 ml): (2-6 ml), and the mass ratio of lenvatinib to methanesulfonic acid is 1 g: (0.22-0.45 g); and after the system is clarified, 0-5% by mass of a seed crystal in a crystal form X is added, acetonitrile is dropwise added into the solution, the mass volume ratio of acetonitrile to lenvatinib is (1-6 ml: 1 g), the temperature is kept at 15-30 DEG C, the heat preservation stirring time is 12-24 h, and suction filtration and drying are conducted to obtain solid powder. The method is simple in preparation process, better in product quality and suitable for industrial production.

The present disclosure relates to a novel crystalline form of lenvatinib mesylate and the preparation method thereof. The novel crystalline form of mesylate of the present disclosure can be used for treating invasive and differentiated thyroid cancer. The novel crystalline form of mesylate of the present disclosure has good solubility, stability, and remarkable purification effect in process. The preparation method of this novel crystalline form is simple, low cost, and has an important value for future optimization and development of the drug.

The invention discloses a method for refining Lenvatinib mesylate. The method for refining the Lenvatinib mesylate, provided by the invention, comprises the following step: subjecting a solution formed by an organic solvent and crude Lenvatinib mesylate to cooling and crystallization, thereby obtaining the Lenvatinib mesylate, wherein the organic solvent is a mixed solvent of ethylene glycol di-C1-C4 alkyl ether and C1-C4 alkyl alcoholic solvent or a mixed solvent of ethylene glycol mono-C1-C4 alkyl ether and acetic acid C1-C4 alkyl ester solvent; and the crude Lenvatinib mesylate has an HPLCpurity of 95.0% to 99.0%. The product prepared by the method disclosed by the invention is high in purity, the HPLC purity is higher than 99.80%, the content of a single impurity is lower than 0.10%,the yield of refining is high and reaches 81% to 87%, the production cost is low, and thus, the method is applicable to industrial production.

The invention discloses a method for detecting methanesulfonate genotoxic impurities in lenvatinib mesylate by gas chromatography, the methanesulfonate genotoxic impurities may be contained in an antitumor drug lenvatinib mesylate, and at present, the methanesulfonate genotoxic impurities are generally detected by liquid chromatography or gas chromatography-mass spectrometry; according to the method, a sample is derivatized through a derivatization solution of sodium iodide and vitamin C, methanesulfonate substances in lenvatinib mesylate are detected by adopting a gas chromatograph, methanesulfonate impurities are calculated by adopting a standard addition method, the interference of a test sample can be effectively reduced, the method is superior to a common external standard method and a common internal standard method in accuracy, methodology verification proves that the method has good sensitivity, precision and accuracy, and the method is low in detection cost, high in operability and superior to a conventional liquid chromatography-mass spectrometry or gas chromatography-mass spectrometry method.

The invention provides a preparation method of a high-purity crystal, and particularly relates to a preparation method of a mesylate lenvatinib crystal C. The preparation method comprises the following steps: 1) dissolving a lenvatinib free alkali in a good solvent to obtain a solution of the lenvatinib free alkali; 2) clarifying and filtering the solution obtained in the step 1), adding methanesulfonic acid and a poor solvent I or a solution of methanesulfonic acid in the poor solvent I, and carrying out a salt forming reaction to obtain a crude product of the mesylate lenvatinib; 3) putting the obtained crude product of the mesylate into a poor solvent II, and pulping to obtain a mesylate crystal C. The purity of the obtained mesylate crystal C is not lower than 99.5%, the purity of any single impurity is not higher than 0.10%, and the total impurity is not higher than 0.5%. The purity of the lenvatinib mesylate crystal C prepared by the preparation method of the lenvatinib mesylate crystal C is higher, wherein, the contents of an impurity A and an impurity B in the lenvatinib mesylate crystal C are greatly reduced.

The invention relates to a preparation method of an amorphous quinoline carboxamide derivative, which comprises the following steps: dissolving a crystal form C of lenvatinib mesylate in a tert-butyl alcohol/water mixed solvent, stirring, filtering, collecting filtrate, and freeze-drying to obtain the amorphous quinoline carboxamide derivative. The amorphous form obtained by the method is high in purity, uniform in freeze-drying, fluffy in sample appearance, low in water content, qualified in solvent residue, small in damage of a freeze-drying solvent to instruments and equipment, safe to operate and suitable for industrial production, the obtained amorphous form does not generate a gel phenomenon in a preparation process, and capsules prepared from the amorphous form as a raw material have the advantage of being fast in dissolution.

The invention discloses a novel crystal form of lenvatinib mesylate. In an X-ray powder diffraction pattern, obtained through determination using Cu-Ka ray, of the new crystal form, at least followingcharacteristic peaks are contained: diffraction angles 2 theta are at 4.19 +/-0.2 DEG, 10.15 +/-0.2 DEG, 12.40 +/-0.2 DEG, 18.93 +/-0.2 DEG, 22.05 +/-0.2 DEG and 29.26 +/-0.2 DEG. The obtained new crystal form has good solubility and stability, and is suitable for industrial production. In addition, the invention also provides a preparation method and a medicinal composition of the new crystal form.

The invention discloses a preparation method of a lenvatinib mesylate M crystal form. The preparation method comprises the following steps: (1) conducting salt forming reaction; (2) separating a wet product of salt; (3) conducting drying to obtain a dry product of salt; and (4) supplementing water to the dried product. The preparation method is good in process reproducibility, high in yield and high in crystal form and chemical purity, and the quality meets the quality control requirement and can be stably amplified to a kilogram level.