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Communication | Regular issue | Vol 6, No. 9, 1977, pp.1361-1364
Published online, 1st January, 1970
DOI: 10.3987/R-1977-09-1361
A New Synthesis of Pyrimido[4,5-b]quinoline-2,4(1H,3H)-dione (5-Deazaalloxazine) Derivatives

Keitaro Senga,* Kayoko Shimizu, Sadao Nishigaki, and Fumio Yoneda

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

Abstract

Treatment of 6-anilino-1,3-dimethyluracils with dimethylformamide dimethylacetal afforded the corresponding 1,3-dimethylpyrimido[4,5-b]quinoline-2,4(1H,3H)-diones (1,3-dimethyl-5-deazaalloxazines).