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Syntheses of 2,2-dimethylchromene-5,8-quinone, 2,2-dimethylchromene-6,7-quinone, and 6,7-dimethoxy-2,2-dimethylchromene-5,8-quinone are described. Being easily bioreducible to electron-rich chromenes these compounds, and their oxirane derivatives, are of interest as possible anti-tumour alkylating agents.
P. E. Brown, R. A. Lewis and M. A. Waring, J. Chem. Soc., Perkin Trans. 1, 1990, 2979 DOI: 10.1039/P19900002979
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