ABSTRACT
<p><b>OBJECTIVE</b>To investigate the chemical constituents from the stems of Schisandra sphaerandra.</p><p><b>METHOD</b>Compounds were isolated from ethanolic extract of the titled herb by silica gel column chromatography, and their structures were elucidated by physical and chemical evidences and spectroscopic analysis.</p><p><b>RESULT</b>12 compounds were obtained and identified as wuweizisu C (1), ganwuweizic acid (2), nigranoic acid (3), catechin (4), 2 alpha,24-dihytroxyursolic acid. (5), 3 beta-O-acetylursolic acid (6), ursolic acid (7), slyceryl 26-hydroxyhexacosanoate (8), slyceryl hexacosanoate (9), fat acids (10), beta-sitosterol (11), daucosterol (12), respectirely.</p><p><b>CONCLUSION</b>Three pentacyclic triterpene carboxylic acid (5-7) were isolated from Schisandreae for the first time.</p>