Reactions of 1-substituted 8-hydrazinotheobromines with Dicarbonyl CompoundsN. I. Romanenko, Dmitriy Ivanchenko, Tatiana Sharapova, Oksana Anatolievna Pakhomova, A. S. KorzhovaChemistry of Natural Compounds2014Previously undescribed 8-(3,5-dimethylpyrazolyl-1)theobromines and 8-(3,4-dimethyl-6-oxopyrano [2,3-c]pyrazol-1-yl)theobromines, promising biologically active compounds, were prepared by reacting… (More)