| 摘要 |
<p>This invention relates to new tricyclic compounds of formula (I), wherein X is halogen, Y is lower alkoxy, hydroxy or amino, R1 is hydrogen or lower alkyl optionally substituted with a heterocyclic group or aryl, and n is 1 or 2, and its salt, which is useful as a medicament; and to new use of cyclic nucleotide-PDE inhibitors.</p> |
