PTERIDIN-DERIVATE, VERFAHREN ZU IHRER HERSTELLUNG SOWIE DEREN VERWENDUNG ZUR HERSTELLUNG VON IMMUNOGENEN

摘要

The present invention relates to pteridine derivatives of the formula I in which R<1> denotes an amino group, C1-C6-alkylamino group, di-C1-C6-alkylamino group or an amino group substituted by a protective group, R<2> denotes a hydroxy group, amino group, C1-C6-alkylamino group, di-C1-C6-alkylamino group or an amino group substituted by a protective group, R<3> denotes a formyl group, carboxyl group, C1-C6-alkoxycarbonyl group, hydroxy group, amino group, mercapto group or aminocarbonyl group, R<4> denotes a hydrogen atom or a C1-C6-alkyl group, and R<5> represents an alpha -amino acid radical which is bonded to the carbonyl group via the alpha -amino group and A denotes a straight-chain or branched C1-C8-alkylene group which can be interrupted by an oxygen, sulphur or nitrogen atom and which is optionally substituted by hydroxyl or oxo groups, and their tautomers, esters and amides. In addition, the invention relates to immunogens which are prepared from the novel pteridine derivatives of the formula I, in which a carrier suitable for immunological purposes is bonded to the compounds according to the invention in the 5-position of the pteridine ring system. The invention additionally relates to antibodies which are obtainable with the aid of the abovementioned immunogens, and to diagnostic agents for carrying out immunological determinations, which contain these antibodies.