| 摘要 |
<p>PCT No. PCT/EP98/00124 Sec. 371 Date Jul. 14, 1999 Sec. 102(e) Date Jul. 14, 1999 PCT Filed Jan. 12, 1998 PCT Pub. No. WO98/31674 PCT Pub. Date Jul. 23, 1998Compounds of formula I wherein R1, R2, R3, R4 and R5 have the means set forth in the description are selective cyclic nucleotide phosphodiesterase (PDE) inhibitors (specifically of type 4), which are effective bronchial therapeutics.</p> |
