Study on triterpenes of Microtropis tiflora / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents of Microtropis triflora.</p><p><b>METHOD</b>The compounds were isolated by chromatography on silica gel and Sephadex LH-20. There structures were elucidatedby by chemical methods and spectral analysis.</p><p><b>RESULT</b>Five triterpenoids were isolated and elucidated as friedelin (1), 3-oxo-28-friedelanoic acid (2), 29-hydroxy-3-friedelanone (3), salaspermic acid (4), orthosphenic acid (5).</p><p><b>CONCLUSION</b>Compounds 1-5 are all isolated from M. triflora for the first time.</p>