N-(2-((4-(Diethylamino)butyl)amino)-6-(3,5-dimethoxyphenyl)pyrido(2,3-d)pyrimidin-7-yl)-N'-(1,1-dimethylethyl)urea → HCID 86713615, compound

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Reaction Steps

The starting material 1-(tert-butyl)-3-(2-((4-(diethylamino)butyl)amino)-6-(3,5-dimethoxyphenyl)pyrido[2,3-d]pyrimidin-7-yl)urea (PD173074) can be purchased from, e.g., SelleckChem.com. In a dried vessel, acryloyl chloride (2 equiv.) and diisopropylethylamine (4.3 equiv.) are added to a solution of 1-(tert-butyl)-3-(2-((4-(diethylamino)butyl)amino)-6-(3,5-dimethoxyphenyl)pyrido[2,3-d]pyrimidin-7-yl)urea (1 equiv.) in anhydrous dichloromethane at 0° C. After stirring at room temperature for 2 hours, the reaction mixture is concentrated, diluted with DMSO and purified by reverse phase HPLC (5-95% water/acetonitrile). After concentrating the fractions, the product N-(7-(3-(tert-butyl)ureido)-6-(3,5-dimethoxyphenyl)pyrido[2,3-d]pyrimidin-2-yl)-N-(4-(diethylamino)butyl)acrylamide is obtained as a pale yellow foam. LCMS (M+1)=578.2.

Provenance & Evidence