5-((6-Methyl-3-pyridyl)methyl)-2-(nitroamino)-1H-pyrimidin-4-one → 2-[4-(5-Bromo-3-aminopyrid-2-yl)butylamino]-5-(6-methylpyrid-3-ylmethyl) 4-pyrimidone

Beteiligte Stoffe

Reaktionsschritte

5-Bromo-2-(4-aminobutyl)-3-aminopyridine (0.5 g) and 2-nitroamino-5-(6-methylpyrid-3-ylmethyl)-4-pyrimidone (0.59 g) were refluxed in pyridine (2 ml) under nitrogen for 9 hours. The pyridine was removed in vacuo and the residual pyridine removed by azeotroping with n-propanol. After chromatography on silica in ethylacetate/ethanol/0.880 ammonia (15:10:2), the residue was crystallised from ethanol-ether and water (2 drops) to give 2-[4-(5-bromo-3-aminopyrid-2-yl)butylamino]-5-(6-methylpyrid-3-ylmethyl) 4-pyrimidone (0.52 g), m.p. 196°-197° C.

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