abstract |
PCT No. PCT/EP97/04435 Sec. 371 Date Feb. 26, 1999 Sec. 102(e) Date Feb. 26, 1999 PCT Filed Aug. 13, 1997 PCT Pub. No. WO98/08841 PCT Pub. Date Mar. 5, 1998Compounds having the formula (I): wherein R1, R2, R3, R4, R5 and n have the meanings given in the description. The compounds of formula (I) are selective inhibitors of phosphodiesterase IV. |