Tannins and related polyphenols of euphorbiaceous plants. XII. Euphorbins G and H, new dimeric hydrolyzable tannins from Euphorbia prostrata and Euphorbia makinoi

Article abstract of DOI:10.1248/cpb.42.2005

Two new ellagitannin dimers, euphorbins G (20) and H (21), together with 12 known polyphenols, were isolated from the leaves of Euphorbia prostrata (E. chamaesyce). Their structures, having ¹C₄ and ⁴C₁ glucopyranose cores in each molecule, were established by spectroscopic and chemical methods. These new dimers, and 13 known hydrolyzable tannins, among which six are the same as those from E. prostrata, were also isolated from E. makinoi.

Full text of DOI:10.1248/cpb.42.2005

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