ABSTRACT
To study the chemical constituents of "Shan-Ci-Gu" (the tuber of Cremastra appendiculata (D. Don) Makino), the compounds were isolated with silica gel and reverse phase silica gel as well as Sephadex column chromatographic method. Their structures were elucidated on the basis of modern spectra technology. Seven compounds were isolated and identified as 5-methoxybibenzyl-3, 3'-di-O-beta-D-glucopyranoside (1), militarine (2), loroglossin (3), protocatechuic acid (4), succinic acid (5), gastrodin (6), and daucosterol (7). Compound 1 is a new compound. Compounds 2 -6 were isolated from this plant for the first time.
Subject(s)
Benzyl Alcohols , Chemistry , Glucosides , Chemistry , Hydroxybenzoates , Chemistry , Molecular Structure , Orchidaceae , Chemistry , Plant Tubers , Chemistry , Plants, Medicinal , Chemistry , Succinic Acid , ChemistryABSTRACT
<p><b>OBJECTIVE</b>To study on the chemical constituents of Lavandula augustifolia.</p><p><b>METHOD</b>The compounds were extracted with 95% ethyl alcohol, isolated by various column chromatography and identified by spectroscopic methods.</p><p><b>RESULT</b>Seven flavanoids were isolated and identified as apigenin (1), ladanein (2), apigenin-7-O-beta-D-(6'-p-hydoxy-cinnamoyloxy) -mannoside (3), luteolin (4), apigenin-7-O-beta-D-glucoside (5), luteolin-7-O-beta-D-glucoside (6), 5, 4'-dihydroxy flavonoid-7-O-beta-D-pyranglycuronate buthyl ester (7).</p><p><b>CONCLUSION</b>All of these seven compounds were obtained from this plant for the first time.</p>
Subject(s)
Apigenin , Chemistry , Chromatography, High Pressure Liquid , Flowers , Chemistry , Glucosides , Chemistry , Lavandula , Chemistry , Luteolin , Chemistry , Magnetic Resonance Spectroscopy , Mass Spectrometry , Plants, Medicinal , ChemistryABSTRACT
<p><b>OBJECTIVE</b>To study flavonoids in Scutellaria barbata and elucidate their structures.</p><p><b>METHOD</b>Compounds were isolated and purified by normal column chromatography, paper thin layer chromatography and Sephadex chromatography. The chemical structures were elucidated by ESI mass and NMR spectra.</p><p><b>RESULT</b>Five flavonoids were isolated from S. barbata and identified as apigenin (1), luteolin (2), ethyl-7-O-apigenin-glucuronate (3), apigenin-7-O-beta-glucoside (4), and apigenin-7-O-neohesperidoside (5), in addition to benzyaldehyde (6).</p><p><b>CONCLUSION</b>Flavonoidglycoside (3), (4) and (5) were isolated from S. barbata for the first time.</p>