252 results about "Agomelatine" patented technology

The crystalline form V of a compound of formula (I) is characterised by the X diffraction diagram thereof on a powder.

The crystalline form IV of a compound of formula (I) is characterised by the X diffraction diagram thereof on a powder.

The crystalline form III of a compound of formula (I) is characterised by the X diffraction diagram thereof on a powder, and the drugs contains it.

A process for the industrial synthesis and a new crystalline form of the compound of formula (I): Medicinal products containing the same which are useful in treating disorders of the melatoninergic system.

The invention discloses a preparation method of an agomelatine I type crystal which is an anti-depressant. The preparation method comprises the following steps of: dissolving crude agomelatine in a hydrophily organic solvent, filtering, dropping the filtrate into water under stirring, separating out solids and drying; wherein the weight part ratio of the hydrophily organic solvent to the water is 1:2-50. The agomelatine I type crystal prepared by the invention has excellent quality, good reproducibility, and high purity of HPLC normalization method to be above 99 percent, and is more suitable for large-scale industrialization production.

The invention discloses a medicine of Agomelatine for treating depression, in particular an Agomelatine crystal and a medicine composition thereof. The Agomelatine crystal is irradiated by using Cu-K alpha; and an X-ray powder diffraction spectrum expressed by the degree of 2theta of the Agomelatine crystal has characteristic diffraction peaks at positions of 12.84, 13.84, 16.14, 14.18, 18.56, 19.12, 20.86, 21.20 and 23.84, and an infrared absorption spectrum of the Agomelatine crystal has characteristic diffraction peaks approximately at position of 3234, 3060, 2940, 1638, 1511, 1436, 1249, 1215, 1184, 1032, 908, 828, 755 and 588cm-1. The DSP heat absorption transition is 97.6 DEG C. The invention further discloses application of the medicine composition containing the Agomelatine crystal as an active effective component to the preparation of medicines for treating the depression.

The invention relates to a novel dispersible tablet which is prepared from a certain amount of antipsychotic medicines or pharmaceutically acceptable salt or ester thereof or mixture thereof, a certain amount of selective serotonin reuptake inhibitors (SSRIs) and at least one of pharmaceutically acceptable carriers, wherein the antipsychotic medicines are aripiprazole, fluvoxamine, escitalopram, olanzapine, mirtazapine, clozapine, ziprasidone, mianserin, agomelatine, lurasidone, iloperidone, blonanserin, moclobemide, timiperone, palipeddone, trimipramine, carpipramine, lofepramine or mosapramine. The novel dispersible tablet is used for preventing, delaying or treating depression or schizophrenia of patients. Compared with common tablets or capsules, the novel dispersible tablet has the characteristics of quick and uniform dispersion, short disintegration time, quick medicine absorption, high bioavailability and good stability, and is convenient to take.

The invention belongs to the technical field of medicines, and discloses a pharmaceutical composition for treating depression. The pharmaceutical composition is composed of a raw material agomelatine and auxiliary materials, wherein the raw material agomelatine is micronized agomelatine. Based on a deep research of the physical and chemical properties of agomelatine, the scientific researchers of the company accidentally find that agomelatine can be micronized for obtaining agomelatine with a certain particle size to produce a preparation, the invention has the advantages of uniform quality and good dissolution rate.

The invention discloses a preparation method of an agomelatine I crystal form, which comprises the steps of: adding agomelatine into a mixed solvent of amide and water, heating for dissolving, then reducing the temperature and separating out crystals, and drying to obtain a solid. The agomelatine is dissolved in the heated mixed solvent of the amide and water, and separated out slowly in a cooled mixed solvent of the amide and water, and the high-purity I crystal form can be stably obtained. The method has the advantages of high purity of reaching above 99 percent of the single crystal form, simple operation and good repeatability, and the like and is suitable for industrialized production.

The invention relates to agomelatine benzenesulfonic acid compound of a formula I and a preparation method thereof; the agomelatine benzenesulfonic acid compound obtained by the invention is good in product stability, high in purity and is suitable for application demand when finished drug is prepared; preparation technology is also very simple; and a high-purity product can be obtained without special operation, wherein in the formula (I), R=CH3, H.

The invention provides a copolymer containing amorphous agomelatine. The detection of a sample of the copolymer by Differential Scanning Calorimetry (DSC) and X-ray powder diffraction shows that the sample has stable properties. The copolymer mainly comprises agomelatine raw material, carrier and solvent. The invention also provides a preparation method of the copolymer containing amorphous agomelatine, and the method has good reproducibility. The invention further provides a pharmaceutical composition containing the copolymer containing amorphous agomelatine and an application of the copolymer containing amorphous agomelatine in preparing medicines for treating depression.

The invention provides an agomelatine-containing orally disintegrating tablet, which is characterized in that the inclusion technology is adopted to prepare the agomelatine-containing orally disintegrating tablet. The invention effectively covers up the tingling of agomelatine, improves the dissolution of the agomelatine, and is suitable for industrial production.

The invention discloses a crystalline Agomelatine ethylene glycol, acetic acid solvate and a preparation method thereof. The preparation method of the crystalline Agomelatine ethylene glycol solvate comprises the steps of: mixing Agomelatine with ethylene glycol according to the proportion of 1:2-5, heating the mixture to 100 to 130 DEG C, and melting and cooling the heated mixture to result in solids. The preparation method of the crystalline Agomelatine ethylene glycol solvate further comprises the steps of: dissolving Agomelatine in acetic acid to result in solution, and adding the solution into antisolvent, followed by standing still or constantly stirring or evaporating the solvent below 50 DEG C to result in crystal. The crystalline Agomelatine ethylene glycol, acetic acid solvate prepared according to the method has the advantages of: obviously reduced melting point of the solvate, high crystallization purity, good reproducibility, less amount of the solvent used, no need of protection from inert gas, low production cost, simple operation, mild reaction condition and easy control.

The invention relates to an agomelatine crystal form B, a preparation method thereof and a medicinal composition containing the same.

The invention provides a preparation method of agomelatine crystal form A which has a single endothermic peak at about 100 DEG C under the differential scanning calorimetry.

The invention provides an agomelatine solid preparation. Agomelatine and a carrier are subjected to hot melt extrusion to form solid dispersoid of agomelatine, and the solid dispersoid of agomelatine can be further prepared into the solid preparation. A product can be dissolved out well and is controllable in quality.

The invention provides a new preparation method of an important intermediate of the antidepressant agomelatine, i.e. 2-(7-methoxy-1-naphthyl) acetonitrile. In the method, a compound of formula III is subjected to a Wittig reaction so as to obtain a compound of formula XI, which then undergoes an aromatization reaction, so that 2-(7-methoxy-1-naphthyl) acetonitrile can be obtained. The preparation method of the invention has a short reaction route, the Wittig reaction and the aromatization reaction both have high yield. With mild reaction conditions and without anything to do with reagents and solvents etc. of high toxicity, the preparation method provided in the invention is suitable for industrial production.

The invention relates to new process for the synthesis of agomelatine. More particularly, the invention relates to a process for the industrial synthesis of the compound of formula (I).

A process for the industrial synthesis and a new crystalline form of the compound of formula (I):Medicinal products containing the same which are useful in treating disorders of the melatoninergic system.

Crystalline form V of the compound of formula (I): characterised by its powder X-ray diffraction diagram. Medicinal products containing the same which are useful in the treatment of melatoninergic disorders.

The invention relates to a coated solid orodispersible pharmaceutical composition for oral, oromucosal or sublingual administration of agomelatine.

The invention aims at providing a preparation method of 2-(7-anisyl-1- naphthyl) ethylamine (II) which is an important midbody of agomelatine. The preparation method uses 2- (7-anisyl-1-naphthyl) acetamide (VII) as an initiative raw material, only needs one reaction step, has higher yield, abolishes high-voltage hydrogenation, has mild conditions and does not need special devices.

The present invention relates to a preparing method of agomelatine (N-[2-(7- anisyl-1- naphthyl) ethide] acetamide) of melatonin antidepressant drugs of commercial production. Firstly, 7- anisyl-1-tetralone is used as raw material, and is prepared into 2-(1,2,3,4- tetrahydrochysene-1- oxhydryl-7- methoxynaphthalene-1-base) acetonitrile in a cyanophoric way; then, 2-(1,2- dihydro-1-oxhydryl-7- methoxynaphthalene-1-base) acetonitrile is generated in an aromatization dehydrogenation way, and (7-- anisyl-1- naphthyl) acetonitrile is generated in a backflow reaction dehydrogenation way; finally, the agomelatine (N-[2-(7- anisyl-1- naphthyl) ethide] acetamide) is generated by reducing and acetylizing in a one-kettle way. The present invention has the advantages of high product purity, friendly environment, convenient operation and low cost, and is suitable for the commercial production.

The invention relates to an agomelatine sulfuric acid composition shown in the formula I and a preparation method of the agomelatine sulfuric acid composition. The agomelatine sulfuric acid composition obtained by using the preparation method is good in stability and high in purity, and is suitable for application in finished-product medicinal preparations. The preparation process is also quite simple, so that the product with high purity can be obtained without special operations.

The invention relates to a new crystal form of N-[2-(7-methoxyl-1-naphthyl)ethyl]acetamide (agomelatine), a preparation method of the new crystal form, a medicine including the new crystal form, and an application of the pharmaceutical composition in the medicine treating the depression.

The invention discloses agomelatine-isonicotine eutectic crystal which has the chemical formula (I). The diffraction angles 2theta can be 10.20 DEG, 14.43 DEG, 15.97 DEG, 17.64 DEG, 18.57 DEG, 19.22 DEG, 19.91 DEG, 20.68 DEG, 21.39 DEG, 21.66 DEG, 21.94 DEG, 23.16 DEG, 24.28 DEG, 24.75 DEG, 25.42 DEG, 29.54 DEG, 29.90 DEG and 30.39 DEG. The agomelatine-isonicotine eutectic crystal is prepared by melting agomelatine and isonicotine and cooling. The agomelatine-isonicotine eutectic crystal is easy to prepare and has low preparation cost.

The invention relates to a preparation method for an intermediate compound for preparing agomelatine. The agomelatine intermediate 2-(7-methoxyl-1-naphthyl) acetamide is directly obtained by the ammonolysis of (7-methoxyl-1-naphthyl) ethyl acetate. The method has high reaction yield; reagents used have low cost; the method also has relatively mild reaction condition, safe operation and good controllability. Besides, the whole reaction process is not added with highly toxic reagent or solvent, thus meeting the requirement of environmental protection and being very suitable for industrialized production application.

The invention provides a preparation method of an agomelatine solid preparation. The preparation method comprises the steps of mixing agomelatine or pharmaceutically acceptable salts with polyvinylpolypyrrolidone; hot-melting the mixture to prepare particles; and mixing the particles with other pharmaceutically acceptable carriers to be tabletted or filled to form capsules. The agomelatine solid preparation prepared by the method is stable and controllable in quality and high in dissolution.

The invention belongs to the technical field of medicine, and discloses a medicine composition containing agomelatine prepared form components of, by weight: 11% to 25% of agomelatine, 30% to 65% of lactose, 11% to 40% of starch, 8% to 15% of carboxymethylstarch sodium, 0.5 to 5% of stearic acid, 0.6% to 2% of magnesium stearate, and 0.5% to 5% of silicon dioxide. As a result of experiments, preparations prepared with the medicine composition provided by the invention provide a better dissolution rate.