Chemical Constituents of Rheum tanguticum Maxim.ex Balf.

Aim To study the chemical constituents of the root and rhizome of Rheum tanguticum Maxim. ex Balf. Methods Chemical constituents were isolated and purified by many chromatographic methods, and their structures were elucidated by MS, NMR, and others. Results Twenty compounds were isolated and their structures were identified as β-sitosterol, chrysophanol, aloe-emodin, physcion, rhein, emodin, etc. Conclusion Among these compounds, 4-(4′-hydroxyphenyl)-2-butanone, 4-(4′-hydroxyphenyl)-2-butanone-4′-O-β-D-(2″-...

丁香中的一个新没食子酸酯酚苷(英文)

目的:对丁香花蕾部分的化学成分进行研究。方法:采用柱层析方法分离纯化,通过理化性质和波谱分析确定化合物结构。结果:分离鉴定了1个没食子酸酯酚苷,命名为methyl2-O-(6’-O-galloyl)-β-D-glucopyranosylbenzoate。结论:化合物1为新化合物。