Chemical investingation of Chinese mangrove Sonneratia apetala II / 中国中药杂志

<p><b>OBJECTIVE</b>Isolation and structural elucidation of the constituents of China mangrove Sonneratia apetala.</p><p><b>METHOD</b>chromatography methods were used for isolation of compounds, spectroscopic methods were used for structural identifyication.</p><p><b>RESULT</b>seven known compounds named (+/-) symgaresinol, betulinic acid, lupeol, lupeone, stigmast-5-ene-3beta, 7alpha-diol, beta-alpha myrin hexadecaneate, physcoion were isolated.</p><p><b>CONCLUSION</b>these known compouns were unreported previously from this plant.</p>

Studies on dihydroflavonol glycosides from rhizome of Smilax glabra / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate the chemical constituents from the rhizomes of Smilax glabra.</p><p><b>METHOD</b>The compounds were isolated by column chromatography with silica gel, Diaion HP-20 and ODS as packing materials, and HPLC. Their structures were determined on the basis of their spectral evidence.</p><p><b>RESULT</b>5 dihydro-flavonol glycosides were identified as: astilbin (1), neoastilbin (2), isoastilbin (3), neoisoastilbin (4), (2R, 3R)-taxifolin-3'-O-beta-D-pyranglucoside (5).</p><p><b>CONCLUSION</b>Compounds 2, 4, 5 were isolated from this plant for the first time.</p>