Synthesis of 6,8,9-Trihydroxy-2-Methyl-2H-Naphtho [2,3-b]Pyran-5,10-Dione, a Pigment of Echinothrix diadema, and Its Analogs

被引:0
作者
N. D. Pokhilo
G. I. Mel’man V. P. Glazunov
V. F. Anufriev
机构
[1] Russian Academy of Sciences,G. B. Elyakov Pacific Institute of Bioorganic Chemistry, Far
来源
Chemistry of Natural Compounds | 2014年 / 50卷
关键词
6,8,9-trihydroxy-2-methyl-2; -naphtho[2,3-; ]pyran-5,10-dione; pyranonaphthazarins; tautomers;
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摘要
6,8,9-Trihydroxy-2-methyl-2H-naphtho[2,3-b]pyran-5,10-dione, a pigment of Echinothrix diadema, was synthesized. It existed as a mixture of two tautomers in CHCl3 solution according to IR spectroscopy. Its analogs 6,9-dihydroxy-2-methyl-2H-naphtho[2,3-b]pyran-5,10-dione and 6,9-dihydroxy-2-methyl-7,8-dichloro-2H-naphtho[2,3-b]pyran-5,10-dione were synthesized.
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页码:417 / 419
页数:2
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