EP0956855A1 — Immunosuppressive effects of 8-substituted xanthine derivatives

USPTO Abstract

The invention relates to a novel use of 8 substituted xanthine derivatives for the manufacture of a medicament for the treatment of auto-immuno disorders. The invention relates in particular to the use of a xanthine derivative of general formula (I): wherein: R 1 , R 2 and R 3 are independently hydrogen, saturated or unsaturated aliphatic chains which may be straight or branched having 1 to 6 carbon atoms; X and Y are independently oxygen or sulfur; Z 1 is selected from the group comprising a thienyl; furanyl; cyclopentyl, phenyl or a substituted by Z 2 or unsubstituted phenyl; wherein Z 2 is selected from the group comprising phenyl; sulfonic acid; unsubstituted or N-substituted sulfonamide with substituents such as alkyl, aminoalkyl where the amino group may be substituted itself with lower alkyl groups bearing 1 to 4 carbon atoms; nitro; halogen substituted or unsubstituted amino group; aliphatic chain with 1 to 3 carbon atoms; halogenated aliphatic chain with 1 to 3 carbon atoms; aliphatic chain containing ether functions, acids, esters, amides, substituted or unsubstituted amines having 1 to 3 carbon atoms, nitro, sulfonamides or a combination of these functional groups with a maximum length of the chain of 12 atoms, or a pharmaceutically acceptable salt thereof for the manufacture of a medicament for the treatment of auto-immuno disorders.