Two new phenolic glycosides, named parishins F-G (1-2), together with known parishin E, were isolated from the rhizome of Gastrodia elata. The new structures were established as 1,3-di-[4-O-(β-D-glucopyranosyl) benzyl]-2-{4-O-[β-D-glucopyranosyl-(1 → 6)-β-D-glucopyranosyl] benzyl} citrate (1) and 2-[4-O-(β-D-glucopyranosyl)benzyl] citrate (2), by means of MS, 1D, and 2D NMR spectral analyses, as well as chemical methods.
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Wang et al. (2012) studied this question.
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