Chemical constituents from herb of Alternanthera philoxeroides / 中国中药杂志

<p><b>OBJECTIVE</b>To study the active constituents from Alternanthera philoxeroides.</p><p><b>METHOD</b>The constituents were isolated with silica gel and Toyopearl HW-40C gel column chromatography and purified by HPLC. Their structures were elucidated by spectroscopy.</p><p><b>RESULT</b>Nine compounds were isolated and identified as phaeophytin a (1), pheophytin a' (2), oleanoic acid (3), beta-sitosterol (4), 3beta-hydroxystigmast-5-en-7-one (5), alpha-spinasterol (6), 24-methylenecycloartanol (7), cycloeucalenol (8), phytol (9).</p><p><b>CONCLUSION</b>Compounds 1,2,5,7-9 were isolated from this plant for the first time.</p>