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■ C-Glycosyl Nucleoside XVII. A Novel Reaction of Schiff Bases with Mercuric Chloride in Dimethyl Sulfoxide

Haruo Ogura,* Masakazu Sakaguchi, Toshihiko Okamoto, Kinji Gonda, and Shozo Koga

*School of Pharmaceutical Sciences, Kitasato University, 5-9-1, Shirokane, Minato-ku, Tokyo 108-8641, Japan

Abstract

Pteridine or theophylline derivatives were obtained from the reaction of Schiff bases of 5,6-diamino-1,3-dimethyluracil with HgCl₂ in dimethylsulfoxide via radical or ionic mechanisms which were confirmed by the studies of time dependent ESR and NMR spectra. These reactions are useful for the preparation of nucleoside analogs.