2-CYANIMIDAZOLE DERIVATIVES INHIBITING PDE IV

摘要

PCT No. PCT/EP97/05322 Sec. 371 Date Mar. 19, 1999 Sec. 102(e) Date Mar. 19, 1999 PCT Filed Sep. 24, 1997 PCT Pub. No. WO98/14432 PCT Pub. Date Apr. 9, 1998The present invention concerns 2-cyanoiminoimidazole derivatives having the formula the N-oxide forms, the pharmaceutically acceptable addition salts and the stereochemically isomeric forms thereof, wherein R1 and R2 each independently are hydrogen; C1-6alkyl; difluoromethyl; trifluoromethyl; C3-6cycloalkyl; a saturated 5-, 6- or 7-membered heterocycle containing one or two heteroatoms selected from oxygen, sulfur or nitrogen; indanyl; 6,7-dihydro-5H-cyclopentapyridinyl; bicyclo[2.2.1]-2-heptenyl; bicyclo[2.2.1]heptanyl; C1-6alkylsulfonyl; arylsulfonyl; or substituted C1-10alkyl; R3 is hydrogen, halo or C1-6alkyloxy; R4 is hydrogen; halo; C1-6alkyl; trifluoromethyl; C3-6cycloalkyl; carboxyl; C1-4alkyloxycarbonyl; C3-6cycloalkylaminocarbonyl; aryl; Het1; or substituted C1-6alkyl; or R4 is -O-R7 or -NH-R8; R5 is hydrogen, halo, hydroxy, C1-6alkyl or C1-6alkyloxy; R6 is a hydrogen or C1-4alkyl; or R4 and R6, or R4 and R5 taken together may form a bivalent radical; -A-B- is -CR10=CR11- or -CHR10-CHR11-; L is hydrogen; C1-6alkyl; C1-6alkylcarbonyl; C1-6alkyloxycarbonyl; substituted C1-6alkyl; C3-6alkenyl; substituted C3-6alkenyl; piperidinyl; substituted piperidinyl; C1-6alkylsulfonyl or arylsulfonyl; having PDE IV and cytokine inhibiting activity. The invention also relates to processes for preparing the compounds of formula (I) and pharmaceutical compositions thereof.