abstract |
The present invention relates to (1) preparation of 7-cyclopentyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid The method of dicarboxamide and its salt; (2) 7-cyclopentyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-7H-pyrrolo[2,3-d]pyrimidine - a novel salt of 6-carboxylic acid dimethylamide; (3) a pharmaceutical composition comprising said substance; and (4) a method of treatment using said substance. |