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Upuna bomeensis

Upuna bomeensis (Dipterocarpaceae) afforded many resveratrol tetramers such as upunaphenols B-D, F, G and H—J, together with trans-and cfr-upunaphenol K (720-729) [212,305,305]. Compounds 725-727 bear a biphenyl bond in their frameworks 725 and 726 have an... [Pg.535]

Davidiol D (754) isolated from the roots of Sophora davidii was the first natural instance of a resveratrol pentamer [339]. The pentamers amurensins E (751) and F (752) were isolated from the roots of Vitis amurensis Rupr. with an unsaturated benzofuran ring [216]. Upunoside A (753) isolated from the stem of Upuna bomeensis (Dipterocarpaceae) is the first instance of a resveratrol pentamer glucoside, and the aglycon has dibenzo-fused bicyclo[5.3.0]octadiene and two dihydrobenzofuran moieties [223], Fig. (45). [Pg.549]

The resveratrol hexamer, upunaphenol A (759) also isolated from Upuna bomeensis possesses a dibenzobicyclo[3.2.1]octadiene ring and four dihydrobenzofuran rings [263]. The hexamers vaticanols D, H and I (755-757), and heptamer vaticanol J (758) isolated from the stem bark of Vatica rassak (Dipterocarpaceae) all contain a trimeric unit structurally... [Pg.549]

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See also in sourсe #XX -- [ Pg.542 ]



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