CRYSTALLINE FORM II OF TILORONE AND METHOD OF OBTAINING THEREOF (VERSIONS)
FIELD: chemistry.SUBSTANCE: invention relates to a novel stable crystalline polymorphic modification of form II of tilorone and to versions of a method of its obtaining. Tilorone is used as an anti-viral and immunomodulating substance. The crystalline form II of tilorone is characterised by a powder...
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Zusammenfassung: | FIELD: chemistry.SUBSTANCE: invention relates to a novel stable crystalline polymorphic modification of form II of tilorone and to versions of a method of its obtaining. Tilorone is used as an anti-viral and immunomodulating substance. The crystalline form II of tilorone is characterised by a powder radiograph, which has characteristic peaks at the following values of 2? (°): 4.39 8.82 10.53 11.94 12.14 12.37 12.73 13.10 13.29 15.14 16.43 20.72 22.57 23.89 24.11 24.49 24.71 25.70 26.28 26.55 27.42 28.78 30.82 31.60 31.95 33.27 34.82. The method of obtaining the crystalline form II of tilorone includes tilorone purification by dissolution at heating in a mixture of isopropanol and a polar solvent, selected from ethanol and water, separation of non-dissolved admixtures from the tilorone solution and spontaneous cooling of the solution with formation of crystals of the crystalline form II of tilorone, which are separated from admixtures, dissolved in the solution. Tilorone purification can also be performed by dissolution of tilorone at heating in the polar solvent, selected from ethanol and water, with separation of non-dissolved admixtures from the tilorone solution and precipitation of crystals of the crystalline form II of tilorone from the solution by isopropanol, with crystals being separated from admixtures, dissolved in the solution, in conditions of slow cooling.EFFECT: obtaining the novel stable crystalline polymorphic modification of tilorone of form II.14 cl, 5 tbl, 4 dwg, 6 ex
Изобретение относится к новой стабильной кристаллической полиморфной модификации тилорона формы II и к вариантам способа ее получения. Тилорон используется в качестве противовирусного и иммуномодулирующего вещества. Кристаллическая форма II тилорона характеризуется порошковой рентгенограммой, которая имеет характеристические пики при следующих значениях 2θ (°): 4.39 8.82 10.53 11.94 12.14 12.37 12.73 13.10 13.29 15.14 16.43 20.72 22.57 23.89 24.11 24.49 24.71 25.70 26.28 26.55 27.42 28.78 30.82 31.60 31.95 33.27 34.82. Способ получения кристаллической формы II тилорона включает очистку тилорона путем растворения при нагревании в смеси изопропанола и полярного растворителя, выбранного из этанола и воды, отделения нерастворившихся примесей от раствора тилорона и самопроизвольного охлаждения раствора с образованием кристаллов кристаллической формы II тилорона, которые отделяют от примесей растворенных в растворе. Либо очистку тилорона проводят растворением тилорона при нагрева |
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