1, 3 -dihydro -2H -imidazol -2 -one derivatives having PDEIV and cytokinin inhibiting activity

PCT No. PCT/EP96/01393 Sec. 371 Date Sep. 29, 1997 Sec. 102(e) Date Sep. 29, 1997 PCT Filed Mar. 28, 1996 PCT Pub. No. WO96/31487 PCT Pub. Date Oct. 10, 1996The present invention concerns the compounds of formula (I) the N-oxide forms, the pharmaceutically acceptable acid or base 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; 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 is a bivalent radical of formula Alk is C1-4alkanediyl; -A-B- is a bivalent radical of formula: -CR6=CR7- or -CHR6-CHR7-; L is hydrogen; optionally substituted C1-6alkyl; C1-6alkylcarbonyl; C1-6alkyloxycarbonyl; optionally substituted C3-6alkenyl; optionally substituted piperidinyl; C1-6alkylsulfonyl or arylsulfonyl; aryl is optionally substituted phenyl; Het1 is morpholinyl or optionally substituted pyridinyl, -furanyl, -thienyl, -hydroxypyridinyl, -imidazolyl, -thiazolyl, -oxazolyl, -isoquinolinyl, -quinolinonyl, -piperidinyl, -piperazinyl; and Het2 is morpholinyl or optionally substituted piperidinyl, -piperazinyl, -pyridinyl, -furanyl or -thienyl; having PDE IV and cytokine inhibiting activity. The invention also relates to processes for preparing the compounds of formula (I) and pharmaceutical compositions thereof.