Studies on triterpenes chemical constituents in rhizome of Alisma gramineum / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate the triterpenoids chemical constituents in rhizome of Alisma gramineum.</p><p><b>METHOD</b>Silicon gel chromatography and HPLC techniques were employed for isolation and purification of the constituents, and the structures were elucidated by various spectral analyses such as NMR, MS and IR.</p><p><b>RESULT</b>5 protostane-type tetracyclic triterpenoids were isolated and identified as 16,23-oxidoalisol B(1), 11-deoxyalisol C(2), alisol F(3), 16beta-methoxyalisol B acetate (4), 16beta-hydroxyalisol B acetate (5).</p><p><b>CONCLUSION</b>All of these compounds were found from A. gramineum for the first time.</p>