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Communication | Special issue | Vol 15, No. 1, 1981, pp.285-288
Published online, 1st January, 1970
DOI: 10.3987/S-1981-01-0285
A New Synthesis of Fervenulins and Alloxazines. Thermolysis and Photolysis of 6-Azido-1,3-dimethyluracil with Tetrazoles and Benzotriazoles

Kosaku Hirota, Kazuo Maruhashi, Tetsuji Asao, and Shigeo Senda*

*Gifu Pharmaceutical University, 6-1 Mitahora-higashi 5-chome, Gifu 502-8585, Japan


Thermolysis of 6-azido-1,3-dimethyluracil (1) in the presence of 5-substituted tetrazoles (2) gave 3-substituted fervenulins (4), which were also synthesized from the intermediates (3) prepared by photolysis of (1) with (2). Irradiation of (1) with benzotriazoles (6) in tetrahydrofuran gave 6-(benzotriazol-1-yl)uracils (7), which were irradiated in methanol to afford alloxazines (8).