abstract |
PCT No. PCT/EP97/06248 Sec. 371 Date Apr. 16, 1999 Sec. 102(e) Date Apr. 16, 1999 PCT Filed Nov. 11, 1997 PCT Pub. No. WO98/22453 PCT Pub. Date May 28, 1998Compounds of formula (I) and the salts of these compounds, are efficacious PDE (phosphodiesterase) inhibitors. |