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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...
The phenolic composition of the seedling leaves of 10 birch species was compared. The results fit rather well to the infrageneric classification proposed for birches, except for B. schmidtii, which exhibited a flavonoid composition similar to white birches. Among white birches, differences in phenolic profiles were small, except for B. pubescens, which contained several flavonoids not detected in...
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