Partly hydrogenated 4-aroyl-substituted pyrazolo[3,4- b ]quinolin-5-ones and 5-aroyl-substituted pyrazolo[1,5- a ]quinazolin-6-ones were obtained by three-component cyclocondensation of substituted 3(5)‑aminopyrazoles with the arylglyoxal hydrates and dimedone, 1,3-cyclohexanedione, or 4,4-dimethylcyclohexanedione in an alcohol medium. The chemical transformations of pyrazolo[3,4- b ]quinolin-5-ones in reactions with hydrazine hydrate and also upon alkylation, acylation, and oxidation were studied. Authors: O. N. Petrova, L. L. Zamigailo, M. G. Shirobokova, S. V. Shishkina, O. V. Shishkin, V. I. Musatov, and V. V. Lipson English Translation in Chemistry of Heterocyclic Compounds , 2013, 49 (7), pp 955-967 http://link.springer.com/article/10.1007/s10593-013-1332-z
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