Coumarins from root of Zanthoxylum dimorphophyllum var. spinifolium / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical components from dried roots of Zanthoxylum dimorphophyllum var. spinifoliun.</p><p><b>METHOD</b>The chemical components were isolated by low pressure column chromatography and their structures were identified by spectroscopic methods.</p><p><b>RESULT</b>Five compounds were isolated and identified as 6-(2', 3'-dihydroxy-3'-methyl-butyl)-7-hydroxy-5-methoxy-2H-1-benzopyran-2-one (I), 6-(2',3'-dihydroxy-3'-methyl-butyl)-7-methoxy-8-(3'-methyl-but-2'-enyl)-2H-1-benzopyran-2-one (II),6-(2',3'-dihydroxy-3'-methyl-butyl)-7-hydroxy-2H-1-benzopyran-2-one (III), 6-(2', 3'-oxiranyl-3'-methyl-butyl)-7-methoxy-8- (3-methyl-but-2-enyl)-2H-1-benzopyran-2-one (IV), 7-methoxy-8-(3'-methyl-but-2'-enyl)-2H-1-benzopyran-2-one (V).</p><p><b>CONCLUSION</b>These compounds were isolated from the plant for the first time.</p>

Studies on the coumarins in the root of Zanthoxylum dimorphophyllum / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents of the dried roots of Zanthoxylum dimorphophyllumr. spinifolium and to find out the active constituents of the plant.</p><p><b>METHOD</b>Modern chromatography was used to purify chemical constituents, and their structures were identified by various spectral methods.</p><p><b>RESULT</b>Four compounds were isolated and identified as isopimpinellin (I), xanthoxyletin (II), 6-(2', 3'-dihydroxy-3'-methyl-butyl)-7-hydroxy-2H-1-benzopyran-2-one (III), 6-(2'-O-beta-D-glucopyranosyloxy, 3'-dihydroxy-3'-methybutyl)-7-hydroxy-2H-1-benzopyran-2-one (IV).</p><p><b>CONCLUSION</b>All of the above compounds were isolated from the above mentioned plant for the first time.</p>

Chemical constituents in the roots of Salvia przewalskii Maxim / 药学学报

<p><b>AIM</b>To investigate the chemical composition of the root of Salvia przewalskii Maxim.</p><p><b>METHODS</b>Compounds were isolated by silica gel column chromatography. Structures of these compounds were elucidated by spectral analysis (EI-MS, FAB-MS, 1HNMR, 13CNMR, 1H-1H COSY, 1H-13C COSY, HMBC, NOESY) and phytochemical properties.</p><p><b>RESULTS</b>Eight compounds were isolated and identified as: tanshinone II-A (I), crypotanshinone (II), przewaquinone A (III), sugiol (IV), ursolic acid (V), 2 alpha, 3 alpha-dihydroxy urs-12-ene-28-acid (VI), oleanolic acid (VII), and neo-przewaquinone A (VIII).</p><p><b>CONCLUSION</b>Compound VIII is a new compound, and compound II, IV, V, VI and VII are isolated from this plant for the first time.</p>

A new alkaloids isolated from tetraploidy banlangen / 药学学报

<p><b>AIM</b>To investigate the chemical constituents of tetraploidy Banlangen (Isatis indigotica Fort.).</p><p><b>METHODS</b>Compounds were separated by chromatography on silica gel. Their structures were determined by spectral analysis and chemical evidence.</p><p><b>RESULTS</b>Three compounds were isolated. Their structures were identified as (E)-2-[(3'-indole) cyanomethylene]-3-indolinone (I), 2-(4-hydroxy-3-methoxyphenyl)-4-[(4-hydroxy-3-methoxy-phenyl)-methyl]-3- hydroxymethyl-tetrahydro-furan (II) and 2-methoxy-4-[tetrahydro-4-[(4-hydroxy-3-methoxy-phenyl)-methyl]-3- hydroxymethyl-2-furanyl] phenyl-1-O-beta-D-glucopyranoside (III).</p><p><b>CONCLUSION</b>Compound I is a new compound.</p>