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Obituary
Zenichi Yoshida (1925-2023)
Zenichi Yoshida (1925-2023)
Professor. Zenichi Yoshida,
a member of the Honorary Advisors of HETEROCYCLES (1975-1998),
has passed away on May 4, 2023 at the age of 97.
I deeply express my regret over his death.
Kunio Ogasawara
Editor
May 11, 2023
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Communication | Regular issue | Vol 12, No. 3, 1979, pp.359-363
Published online, 1st January, 1970■ C-Glycosyl Nucleoside XVII. A Novel Reaction of Schiff Bases with Mercuric Chloride in Dimethyl Sulfoxide
Published online, 1st January, 1970
DOI: 10.3987/R-1979-03-0359
■ 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.
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