Flavonoids and nor-sesquiterpenes of Pedicularis densispica / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents of the whole plants of Pedicularis densispica.</p><p><b>METHOD</b>The chemical constituents were isolated by various chromatographic methods and their structures were determined by chemical evidences and spectral data.</p><p><b>RESULT</b>Ten compounds were isolated and identified as acacetin (1), apigenin-7-0-beta-glucopyranoside (2), kaempferol-3,7-O-alpha-dirhamnopyranoside (3), scutellarein-7-0-beta-glucopyranoside (4), chrysoeriol-7-O-beta-glucopyranoside (5), pedicutricone A (6), dearabinosyl pneumonanthoside (7), salidroside (8), darendoside B (9), and maltol-beta-D-glucopyranoside (10).</p><p><b>CONCLUSION</b>These compounds were isolated from the titled plant for the first time. Except compounds 6 and 8, the others were obtained for the first time from the genus Pedicularis.</p>

Chemical constituents from petroleum ether fraction of ethanol extract of Acorus tatarinowii / 中国中药杂志

The petroleum ether fraction of ethanol extract of Acorus tatarinowii were separated by column chromatography and recrystallization to afford seven compounds. On the spectroscopic analysis, they were identified as 1-hydroxy-7(11),9-guaiadien-8-one (1), calamenone(2), cis-asarone(3), chrysophanol (4), physcion (5), emodin (6), (+)-galbacin (7). Compound 1 is a new compound. Compounds 4-7 were isolated from this plant for the first time.

Studies on chemical constituents in fruit of Alpinia oxyphylla / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents in fruit of Alpinia oxyphylla and their cytotoxicities on cancer cell lines.</p><p><b>METHOD</b>Compounds were isolated and purified by various column chromatographic methods. Their structures were determined by physico-chemical properties and spectral analyses. Compound cytotoxicity was assessed by the sulforhodamine B (SRB) assay.</p><p><b>RESULT</b>Eight compounds were obtained from Me2CO-H2O (70%) extract of the fruit of A. oxyphylla and their structures were identified as: (9E)-humulene-2, 3; 6, 7-diepoxide (1), 3(12), 7(13), 9(E)-humulatriene-2, 6-diol (2), (-)-oplopanone (3), yakuchinone A (4), yakuchinone B (5), tectochrysin (6), isovanillin (7), (2E, 4E)-6-hydroxy-2, 6-dimethylhepta-2, 4-dienal (8), and the cytotoxicities of compounds 1, 3-5 on cancer cell lines, A549, HT-29 and SGC-7901, were also investigated.</p><p><b>CONCLUSION</b>Compounds 1-3, 7, 8 were isolated for the first time from this genus and compounds 1, 3-5 exhibited no cytotoxicity against three cancer cell lines at a concentration of 10 mg x L(-1).</p>