A new isoflavone from Huoxue Yiqi Tang / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To study the chemical constituents in the active parts of Huoxue Yiqi Tang.</p><p><b>METHOD</b>The silica gel, Sephadex LH-20 were used to isolate the compounds, El, FAB-MS and 1D, 2D-NMR were used to identify the obtained compounds.</p><p><b>RESULT</b>14 compounds were obtained from the prescription.</p><p><b>CONCLUSION</b>They were all first time obtained from the prescription. Among them, 7, 3'-dihydroxyl-5'-methoxyisoflavone is new.</p>