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A new clerodane diterpenoid, bafoudiosbulbin H (1), was isolated from the flowers of Dioscorea bulbifera L. var sativa. Its acetylation using acetic anhydride-pyridine and catalytic amount of 4-DMAP at 60 o C yielded bafoudiosbulbin H acetate (2) together with a clerodane with an unprecedented acylation pattern (bafoudiosbulbin H1, 3). The reaction of the known bafoudiosbulbin G (4) in the...
Phytochemical investigation of the roots of Furcraea bedinghausii Koch. Led to the isolation of a mixture of two new homoisoflavones, 5,7-dihydroxy-3-(3,4-methylenedioxybenzyl)-chromone (4a) and 5,7-dihydroxy-3-(4-methoxybenzyl)-chromone (4b), together with the known β-sitosterol (1), 7,4'-dihydroxyhomoisoflavane (2), dihydrobonducellin (3), kaempferol (5), 5,7-dihydroxy-3-(4-hydroxybenzyl)-chromone...
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