摘要 |
<p>The invention provides compounds which are PDE7 inhibitors, having the following formula (I), (II) and (III), in which X 1 , X 2 , X 3 , X 4 , X, Y, Z, A and Z 1 are as defined in the description, methods for preparing them and their use for the treatment of disorders for which therapy by a PDE7 inhibitor is relevant.</p> |