臺灣產白花蛇舌草(又名龍吐珠)Hedyotis diffusa Willd.之甲醇萃取物,以正己烷處理,從可溶部分離得2-methyl-3-hydroxy-,2-methyl-3-methoxy-,2-methyl-3-hydroxy-4-methoxyanthraquinone及一種構造尚不明的化合物。
The following components were isolated from the n-hexane soluble fraction of the methanolextracts of the whole herb of Hedyotis diffusa Willd. (Rubiaceae) and identified: 2-methyl-3-hydroxy-, 2-methyl-3-methoxy-, 2-methyl-3-hydroxy-4-methoxyanthraquinone, and an undetermined anthraquinone C_(17)H_(14)O_4, each in 0.0001% yield.