A new flavonoid from Lysimachia foenum-graecum / 药学学报

The aim of the study was to look for the chemical constituents of the herb of Lysimachia foenum-graecum. The herb of Lysimachia foenum-graecum was extracted with 70% EtOH. The isolation and purification was performed with a combination of multi-column chromatography and the structure was determined by spectral analysis. The flavonoid compound was obtained and elucidated as kaempferol-7-O(4"-(E)-p-coumaroyl-)-alpha-L-rhmanopyranosyl)-3-O-beta-D-glucopyranosyl (1-->4)-alpha-L-rhmanopyranosyl (1-->2)-beta-D-glucopyranoside. It is a new flavonoid compound.

Chemical constituents from a Tibetan medicine Arenaria kansuensis I / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents of Arenaria kansuensis.</p><p><b>METHOD</b>Column chromatographic techniques were applied to isolated constituents. A combination of physico-chemical properties and spectroscopic analysis were used to identify structures of constituents.</p><p><b>RESULT</b>Five compounds were obtained and elucidated as tricin (1), tricin-7-O-beta-D-glucopyranoside (2), tricin 4'-O-beta-guaiacylglyceryl ether (3), isoscoparin (4) and isovitexin (5).</p><p><b>CONCLUSION</b>Compound 2, 3 and 5 were isolated from A. kansuensis for the first time, compound 3 was obtained from the family Caryophyllaceae for the first time.</p>

Chemical constituents of Geranium eristemon / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents of Geranium eristemon.</p><p><b>METHOD</b>Chromatography and spectral analysis were used to isolate the constituents and elucidate their structures.</p><p><b>RESULT</b>Five compounds were isolated from acetone extract of the whole grass of G. eristemon, and identified as beta-sitosterol, protocatechuic acid, myricetin, kaempferol-7-O-alpha-L-arabifuranoside and kaempferol-3-O-alpha-L-arabifuranoside.</p><p><b>CONCLUSION</b>kaempferol-7-O-alpha-L-arabifuranoside and kaempferol-3-O-alpha-L-arabifuranoside were isolated from G. genus for the first time.</p>