1-(2-Hydroxyethyl)piperazine → 7-cyclopentyl-2-{5-[4-(2-hydroxy-ethyl)-piperazin-1-ylmethyl]-pyridin-2-ylamino}-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide

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Following General Procedure B, 7-cyclopentyl-2-(5-formyl-pyridin-2-ylamino)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide (150 mg, 0.396 mmol) and N-(2-hydroxyethyl)piperazine (57 mg, 0.436 mmol) gave 7-cyclopentyl-2-{5-[4-(2-hydroxy-ethyl)-piperazin-1-ylmethyl]-pyridin-2-ylamino}-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide as an off white solid (78 mg, 40%) [following SiO2 chromatography, eluting with 0-10% (2M NH3 in MeOH)/DCM]. MS (ESI) m/z 493.3 (M+H)+ (method A).

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