| 摘要 |
<p>Process for the preparation of 2,5-diamino-6-nitropyridine derivatives of the general formula (1) <IMAGE> in which R<1> to R<4> denote hydrogen or the radicals alkyl, hydroxyalkyl, dihydroxyalkyl, alkoxyalkyl, alkoxycarbonyl, hydroxyl- or chlorine-substituted alkoxycarbonyl, aminoalkyl and aminoalkyl which is substituted by alkyl or hydroxyl groups, the alkyl groups having in each case 1 to 4 carbon atoms, or R<1> and R<2>, or R<3> and R<4>, form an oxazolidinone ring. The invention also relates to novel 2,5-diamino-6-nitropyridine derivatives.</p> |
