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A series of 6-aryl-4-(1,5-dimetyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-ylimino)-1,4-dihydro-2H-pyridazin-3-ones and 4-[2-aryl-1-(2,4-dinitrophenylamino)-2-oxo-1,2-dihydropyrrol-3-ylidenamino]-1,5-dimetyl-2-phenyl-1,2-dihydropyrazol-3-ones were synthesized via recyclization of 1,5-dimethyl-4-(5-aryl-2-oxofuran-3-ylidenamino)-2-phenyl-1,2-dihydropyrazol-3-ones under the action of substituted hydrazines. Most compounds exhibit weak antiinflammatory and analgesic activity. 11 0091-150X/05/3901-0011

Pyrazole derivatives Pyrazole derivatives R 0180Synthesis, Antiinflammatory and Analgesic Activity of 4-Aminoantipyrin Derivatives. -A variety of novel aminocarboxylic acid derivatives of 4-aminoantipyrin [cf. (III) and (VI)] are synthesized and evaluated for their pharmacological properties. -(RUBTSOV, A. E.; MAKHMUDOV, R. R.; KOVYLYAEVA, N. V.; PROSYANIK, N. I.; BOBROV, A. V.; ZALESOV, V. V.; Khim.-Farm. Zh. 36 (2002) 11, 31-35; Permskii gos. univ. im. Gor'kogo, Perm' 614600, Russia; Russ.) -Koehler 16-120

2002oxocarboxylic acids and esters oxocarboxylic acids and esters (benzene compounds) Q 0460 -0874-Aryl-2,4-dioxobutanoic Acids and Their Derivatives in Reactions with Diazoalkanes.-Reaction of the title dioxobutanoic acids (I) and amides (VI) with diazoalkanes provides, depending on the educt ratio, the corresponding esters (III), the methoxy derivatives (IV) and (VIII) or pyrazole derivatives (V) and (IX). -(ZALESOV, V. V.; KATAEV, S. S.; PULINA, N. A.; KOVYLYAEVA, N. V.; Russ. J. Org. Chem. 38 (2002) 6, 840-844; Perm' State Univ., Perm' 614600, Russia; EN)

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