2-(PURIN-9-YL)-TETRAHYDROFURAN-3,4-DIOL DERIVATIVES

摘要

There are provided according to the invention novel compounds of formula (I), wherein R?1, R2, R3, Z1, Z2, Z3 and Z4¿ are as defined in the specification, processes for preparing them, formulations containing them and their use in therapy for the treatment of inflammatory diseases.