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
作者:N. D. Pokhilo、G. I. Mel’man V. P. Glazunov、V. F. Anufriev
DOI:10.1007/s10600-014-0974-0
日期:2014.7
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.
6,8,9- 三羟基-2-甲基-2H-萘并[2,3-b]吡喃-5,10-二酮被合成出来。红外光谱显示,在 CHCl3 溶液中,它是两种同系物的混合物。合成了其类似物 6,9- 二羟基-2-甲基-2H-萘并[2,3-b]吡喃-5,10-二酮和 6,9- 二羟基-2-甲基-7,8-二氯-2H-萘并[2,3-b]吡喃-5,10-二酮。