| abstract |
The invention refers to a method of reception pteridin -4 (3H)-ones of the below the presented formula: where X - atom of oxygen or sulfur; Y - atom of hydrogen; the lowest alkyl group, in particular, methyl radical in 6-th position, or a hydroxyl group in 7-th position; R1 - the atom of the hydrogen substituted by phenyl or non-substituted radical, benzyl radical, methoxymethyl group, acetyl group, 2-acetoxy ethyl or 2, 2, 2 tri fluoroethyl group, and R2 - atom of hydrogen or the lowest alkyl radical, in particular methyl radical. |