ABSTRACT
Objective To study the chemical constituents of the stems and leaves of Mappianthus iodoides. Methods The chemical constituents of M. iodoides were separated and purified by silica gel, ODS, Sephadex LH-20 gel column chromatographies, and preparative HPLC. Their structures were identified by physicochemical properties, spectroscopic analysis, as well as comparisons with the data reported in literature. Results Sixteen compounds were isolated from the 90% ethanol extract of the stems and leaves of M. iodoides, which were identified as 9-hydroxy-4,6-megastigmadien-3-one (1), 9-hydroxy-4,7-megastigmadien-3-one (2), blumenol A (3), 9,10-dihydroxy-4,7-megastigmadien-3-one (4), 5,12-epoxy-9-hydroxy-7-megastigmen-3-one (5), 5,12-epoxy-6,9-hydroxy-7- megastigmen-3-one (6), loliolide (7), lariciresinol (8), isolariciresinol (9), 5′-methoxylariciresinol (10), olivil (11), dehydrodiconiferyl alcohol (12), chushizisin I (13), 3,3-didemethoxyverrucosin (14), 4-epi-larreatricin (15), and glycerol monolinoleate (16). Conclusion All compounds are isolated from the genus Mappianthus for the first time.
ABSTRACT
OBJECTIVE: To investigate the chemical constituents of Arisaema rhizomatum.
ABSTRACT
Objective: To investigate the chemical constituents from the berries of Physalis pubescens. Methods: The chemical constituents were isolated by repeated silica gel column chromatography, Sephadex LH-20 gel columns chromatography, medium pressure column chromatography, and semi-preparative liquid chromatography, and their structures were elucidated by chemical properties and spectral analyses. Results: Sixteen compounds were isolated and identified to be 3, 7, 3'-trimethylquercetin (1), kaempferol (2), chrysoeriol (3), quercetin-3-O-β-D-glucopyranoside (4), arjunolic acid (5), pulsatilla saponin A (6), pulsatilla saponin D (7), caffeic acid (8), 1-O-caffeoyl-β-D-glucopyranoside (9), N-trans-ferulogltyramine (10), neo-olivil (11), medioresinol (12), pinoresinol (13), sucrose (14), uridine (15), and β-sitosterol (16). Conclusion: Compounds 5-7 and 9-15 are obtained from the plants of genus Physalis L. for the first time. Compounds 3 and 8 are obtained from this plant for the first time.