1, 2-DIHYDRO-3H-INDAZOLONE, ITS PRODUCTION AND THERAPEUTIC AGENT OF ALLERGIC AND INFLAMMATORY DISEASE CONTAINING SAID COMPOUND

摘要

The invention concerns pharmaceutical compositions containing a 1,2-dihydro-3H-indazol-3-one derivative of the formula I CHEM wherein Ra is hydrogen, halogeno, nitro, hydroxy, (2-6C)alkanoyloxy, (1-6C)alkyl, (1-6C)alkoxy, fluoro-(1-4C)alkyl, (2-6C)alkanoyl, amino, (1-6C)alkylamino, di-[(1-4C)alkyl]amino, (2-6C)alkanoylamino or hydroxy-(1-6C)alkyl; Rb is hydrogen, halogeno, (1-6C)alkyl or (1-6C)alkoxy; and Y is a group of the formula -A1-X-A2-Q in which A1 is (1-6C)alkylene, (3-6C)alkenylene, (3-6C)alkynylene or cyclo(3-6C)alkylene, or A1 is phenylene; X is oxy, thio, sulphinyl, sulphonyl, imino, (1-6C)alkylimino, (1-6C)alkanoylimino, iminocarbonyl or phenylene, or X is a direct link to A2; A2 is (1-6C)alkylene, (3-6C)alkenylene or (3-6C)alkynylene or A2 is cyclo(3-6C)alkylene or is a direct link to Q, or the group A1-X-A2 is a direct link to Q; or Y is (2-10)alkyl, (3-10C)alkenyl or (3-6C)alkynyl; and Q is aryl or heteroaryl. The invention also provides novel 1,2-dihydro-3H-indazol-3-ones, processes for their production and the use of 1,2-dihydro-3H-indazol-3-one for the manufacture of medicaments for the treatment of various allergic and inflammatory diseases.