PURINERGIC AND PYRIMIDINERGIC RECEPTOR AGONISTS FOR THE TREATMENT OF ACTIVATED CD4<+> T LYMPHOCYTE-MEDIATED IMMUNE DISEASES

摘要

The present invention in particular relates to the use of purinergic and pyrimidinergic receptor agonists of formula (1) or a pharmaceutically acceptable salt thereof for inhibition of CD4+ T lymphocytes activation or as an immunosuppressive agent, wherein B1 is adenine or uracil, optionally substituted by thioalkyl, R1 and R2 represent each independently OH, H, OR7, OCOR7, OCOR7COR7, wherein R7 represents alkyl or aryl and X is of formula (2), (3) or (4), wherein R10 represents hydrogen or is of formula (7),wherein B2 is selected from the group comprising adenine, uracil, thymine, cytosine, guanine, xanthine and hypoxanthine, optionally substituted by thioalkyl, wherein n is 0, 1, 2, 3 or 4, and wherein R4, R4a and R4b represent each independently O, NH, alkylene, monohaloalkylene or dihaloalkylene and R3, R5, R6, R8, R9 represent each independently OH or SH, and wherein R11 and R12 represent each independently OH, H, OR7, OCOR7, OCOR7COR7, wherein R7 is as defined above.