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Communication | Regular issue | Vol 22, No. 3, 1984, pp.497-500
Published online, 1st January, 1970
DOI: 10.3987/R-1984-03-0497
Syntheis of Pyrimido[4,5-b][1,4,6]benzoxadiazocines, a New Class of Heterocycles

Keitaro Senga,* Junko Ohwaki, Hashime Kanazawa, Misuzu Ichiba, and Sadao Nishigaki

*Pharmaceutical Institute, School of Medicine, Keio University, Shinanomachi 35, Shinjuku, Tokyo 160-0016, Japan

Abstract

The dehydrogenative cyclization of 5-(N-arylarylamidino)-1,3-dimethylbarbituric acids with diethyl azodicarboxylate afforded pyrimido[4,5-b][1,4,6]benzoxadiazocines, a new class of heterocycles.