The lignins from Torreya grandis cv. Merrilli / 药学学报

<p><b>AIM</b>To separate and identify the chemical constituents of the aril of Torreya grandis cv. Merrilli.</p><p><b>METHODS</b>Three lignins were isolated by chromatography and their chemical structures were elucidated by IR, EI-MS, 1HNMR, 13CNMR, DEPT and 2D-NMR spectral methods.</p><p><b>RESULTS</b>Three lignins were identified as pinonesinol, dihydrodehydrodiconiferylalcohol and (7,8-cis-8,8'-trans)-2',4'dihydroxyl-3, 5-dimethoxy-lariciresinol.</p><p><b>CONCLUSION</b>These compounds were isolated from this plant for the first time, and compound III is a new compound.</p>

A new chromone glycoside from Cassia siamea lam / 药学学报

<p><b>AIM</b>To study the chemical constituents of the stem of Cassia siamea.</p><p><b>METHODS</b>The compounds were isolated by chromatography on silica gel, and identified on the basis of spectral analysis.</p><p><b>RESULTS</b>Five compounds were isolated and identified as: beta-sitosterol (I), sucrose (II), n-octacosanol (III), 2-methyl-5-(2'-hydroxypropyl)-7-hydroxy-chromone-2'-O-beta-D-glucopyranoside (IV) and piceatannol (V).</p><p><b>CONCLUSION</b>Compound IV is a new compound. Compounds II, III and V were obtained from this plant for the first time.</p>