Studies on the Constituents of Himalayan Ginseng, Panax pseudoginseng. II. The Structures of the Saponins (2)

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The chemical structures of saponin B (I) (=chikusetsusaponin IV), C₄₇H₇₄O₁₈, [α]¹⁸_D -9.10° (pyridine) and saponin C (III) (=desarabinofuranosylchikusetsusaponin IV), C₄₂H₆₆O₁₄, [α]¹⁸_D +15.8° (MeOH), which were isolated from Panax pseudoginseng subsp. himalaicus var. angustifolius (Araliaceae), were established on the basis of physical data and chemical investigations.