Chemical constituents of Oxytropis falcate / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents of Oxytropis falcate.</p><p><b>METHOD</b>The air-dried whole plants of O. falcate were extracted with EtOH (90%) three times at room temperature. The compounds were isolated by silica-gel, polyamide, C-18 and Sphadex LH-20 columns. The structures were identified based on spectral elucidation.</p><p><b>RESULT</b>Fourteen compounds were isolated from O. falcate and identified as, (-)-7-methoxy-dihydroflavone (1), (-)-5-hydroxy-7-methyoxy-dihydroflavone (2), (-)-pinocembrin (3), (-)-7-hydroxy-dihydroflavone (4), 4'-methoxy-2'-hydroxy-chalcone (5), 2', 4'-dihydroxy-dihydrochalcone (6), 2',4'-dihydroxy-chalcone (7), (-)-maackiain (8), tetrahydroflemichapparin-B (9), dalbergin (10), N-benzoyl-2-phenylethylamine (11), n-tetracosanol (12), rhamnocitrin-3-O-beta-neohesperidoside (13), beta-sitosterol (14).</p><p><b>CONCLUSION</b>All the compounds were isolated from O. falcate for the first time.</p>

Chemical constituents of Oxytropis chiliophylla / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents of Oxytropis chiliophylla.</p><p><b>METHOD</b>The air-dried whole plants of O. chiliophylla were extracted with EtOH (90%) three times at room temperature. The compounds were isolated by silica-gel, polyamide, C-18 and Sphadex LH -20 columns. The structures were identified based on spectral analysis.</p><p><b>RESULT</b>8 compounds were isolated from O. chiliophylla and identified as azukisapogenol (1), (22E, 24R) -24-methyl-5alpha-cholesta-7, 22-diene-3beta, 5alpha, 6beta-triol (2), apigein (3), 3', 4'-dimethoxy-quercetin-3-O-beta-D-galactopyranoside (4), 7, 3', 4'-trimethoxy-quercetin-3-O-alpha-L-rhamopyranosyl-(1-->2)-beta-D-glucopyranoside (5), (2S, 3S, 4R)-N-[(R)-2'-hydroxytetracosanoyl]-1, 3, 4-trihydroxy-2-amino-octadeca-6-ene (6), beta-sitosterol (7), daucosterol (8).</p><p><b>CONCLUSION</b>All the compounds were isolated from O. chiliophylla for the first time.</p>