SUBSTITUTED 6-PHENYLDIHYDRO-3 (2H) -PYRIDAZINONE, METHOD FOR THE PRODUCTION THEREOF AND MEDICINAL PRODUCTS CONTAINING THESE COMPOUNDS

摘要

6-Substd. phenyl-pyridazin-3-one derivs. of formula (I) and their salts are new: A=(i)-(iv), R1 = NO2, NH2, OH, CN or halo; R2 = H, Me or CH2OH; R3 = H, 1-6C alkyl (opt. substd. by an OH or NH2 gp.); opt. substd. aryl or heteroaryl; CN; acyl; opt. substd. aroyl; COOH or 1-6C alkoxycarbonyl; m = 1-3; n = 2-4.