Abstract
The CHCl(3)-soluble extract from the flowers of the Mexican medicinal plant Ipomoea murucoides, through preparative-scale recycling HPLC, yielded murucoidins I-V (1-5), which are new pentasaccharides of jalapinolic acid, as well as the known stoloniferin I (6). Saponification of the crude resin glycoside mixture yielded two glycosidic acids, simonic acid B (9) and operculinic acid A (10), and their esterifying residues were composed of the two short-chain fatty acids, 2-methylpropanoic and (2S)-methylbutyric acids. All the isolated compounds (1-6) were characterized through high-field NMR spectroscopy. Compound 4 exhibited marginal cytotoxicity against Hep-2 cells (ED(50) 4 microg/mL).
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