- AN IMPROVED PROCESS FOR THE PREPARATION OF RIBOCICLIB AND ITS SALTS
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The invention relates to a process for the preparation of ribociclib of formula V or its salts. The invention provides novel crystalline forms of ribociclib succinate and ribociclib trifluoroacetate. The present invention also relates to pharmaceutical compositions comprising a crystalline form of ribociclib succinate and at least a pharmaceutically acceptable carrier. It further relates to the use of such compositions in the treatment of cancer.
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- Synthetic method of cyclopentyl pyrimido pyrroles compound
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The invention discloses a synthetic method of a cyclopentyl pyrimido pyrroles compound, which belongs to the field of organic chemical synthesis. Through steps of reduction, oxidation, aldol condensation, aminolysis and nucleophilic substitution, the cyclopentyl pyrimido pyrroles compound is synthesized. The raw materials have the advantages of low cost and easy acquisition, a related intermediate is easily separated and purified, operation is simple, the method is friendly to environment, the purity of the product is high, and the product has good industrial prospect. The prepared cyclopentyl pyrimido pyrroles compound, especially 7-cyclopentyl-N,N-dimethyl-2-((5-(piperazine-1-yl)pyridine-2-yl)amino)-7H-pyrrolo[2,3-d]pyrimidine-6-methanamide has inhibition effect on cyclin-dependent kinase CDK4/6, and has good clinical treatment effect on melanoma and breast cancer.
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- SALT(S) OF 7-CYCLOPENTYL-2-(5-PIPERAZIN-1-YL-PYRIDIN-2-YLAMINO)-7H-PYRROLO[2,3-D]PYRIMIDINE-6-CARBOXYLIC ACID DIMETHYLAMIDE AND PROCESSES OF MAKING THEREOF
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This invention relates to (1) process of making 7-Cyclopentyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide and salts thereof; (2) novel salt(s) of 7-Cyclopentyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide; (3) pharmaceutical compositions comprising the same; and (4) methods of treatment using the same.
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