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Besides previously reported tannins and related polyphenols, additional two new hydrolysable tannins, heterophylliins F and G, were isolated from the leaf extract of Corylus heterophylla, and characterized by spectral and chemical evidence as dimeric and trimeric ellagitannins, respectively, in which monomeric units are linked to each other through a valoneoyl group.
Three new cardiac glycosides were isolated along with two known cardenolides from the seeds of Erysimum cheiranthoides. The new ones were characterized by spectral methods as 16β-hydroxystrophanthidin (strophadogenin) 3-O-β-glucopyranosyl-(1 → 4)-β-boiviopyranoside, strophadogenin 3-O-α-rhamnopyranosyl-(1 → 4)-β-digitoxopyranoside and strophanthidin 3-O-α-rhamnopyranosyl-(1 → 4)-β-digitoxopyranoside,...
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