Triterpenes from Ilex rotunda fruits

Two New Triterpenes from the Rhizome of Dryopteris crassirhizoma, and Inhibitory Activities of Its Constituents on Human Immunodeficiency Virus-1 Protease

“…Virus-1 Protease 7,11) 3,4-dihydroxybenzaldehyde (13), 16b,17-dihydroxykauran-18-oic acid (14), 12,13) ursolic acid (15), stearic acid (16), b-sitosterol (17), and b-sitosterol glucoside (18). Of the known compounds, 3-8 and 13-15 were isolated for the first time from this plant family.…”

“…[14][15][16][17] Specifically, the signals at d 46. C COSY, and heteronuclear multiple bonding correlation (HMBC) spectral data.…”

“…Eighteen compounds (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) were isolated from each fraction (eleven, seven, and two) compounds from the CHCl 3 -, EtOAc-, and BuOH-soluble fractions, respectively) using repeatedly normal and reversed phase silica gel column, Sephadex LH-20, Diaion HP-20, Sep-pak, and preparative HPLC. By comparing their spectral data with those of published values (Fig.…”

The First Cyclic Phenolic Acid Glycoside Dimer and New .ALPHA.-Tetralone and Triterpenoid Glucosides from Gentiana loureirii

“…Separation by a combination of silica gel, octadecyl silica (ODS) column chromatography, and preparative HPLC afforded three new compounds, 1-3, and five known compounds, rotundic acid, 4) tormentic acid, 5) 2a,3a,23-trihydroxy-12,20(30)-ursadien-28-oic acid, 6) 1a,2a,3a,24-tetrahydroxy-12-oleanen-28-oic acid, 7) and 1-O-feruloylglucose. 8) The structures of the known compounds were determined by interpretation of their spectroscopic data as well as by comparison with reported data.…”

New Constituents from the Leaves of Morinda citrifolia

“…The other 24 compounds were identified to be roseoside II (3), 9) deacetyl asperuloside (4), 10) 11) 13-hydroxy-9,11,15-octadecatrienoic acid (8), 13) pteryxin (9), 14) peucedanocoumarin III (10), 14) 5,15-dimethylmorindol (11), 8) barbinervic acid (12), 15) clethric acid (13), 16) rotungenic acid (14), 17) hederagenin (15), 18) oleanolic acid (16), 12) pheophorbide a (17), 19) methyl pheophorbide b (18), 20) methyl pheophorbide a (19), 19) 22) 13-epi-phaeophorbide a methyl ester (25), 23) and phytol (26) 24) by comparison with literature spectral data.…”