title: [Researches on methyl-xanthine series.XI. Synthesis and physicochemical characterization of some 7-R-1,3-dimethyl-xanthine derivatives].
abstract: We have synthesized new xanthine compounds, derivatives of theophylline with various radicals in 7 position. The compounds have been characterized by molecular formula, weight, yield and melting point. The synthesized xanthine derivatives have been purified by repeated crystallizations from various organic solvents. Their chemical structure was confirmed by IR spectroscopy.
authors.affiliation: Disciplina de Chimie farmaceutică, Facultatea de Farmacie, Universitatea de Medicină şi Farmacie Gr.T. Popa Iaşi.
authors.forename: Gh
authors.initials: G
authors.lastname: Dănilă
authors.forename: Georgeta
authors.initials: G
authors.lastname: Rusu
authors.forename: Georgeta Ioana
authors.initials: GI
authors.lastname: Alexandrescu
authors.forename: Lenuţa
authors.initials: L
authors.lastname: Profire
mesh_terms: D001993:Bronchodilator Agents / Q000737:chemistry / Q000494:pharmacology; D003460:Crystallization; D013055:Spectrophotometry, Infrared; D013806:Theophylline / Q000737:chemistry / Q000494:pharmacology; D014970:Xanthines / Q000737:chemistry*
chemical_list: D001993:Bronchodilator Agents; D014970:Xanthines; D013806:Theophylline