✍ Scribed by Ying Zhu; Zhang-Ping Lü; Cai-Bin Xue; Wang-Suo Wu
No coin nor oath required. For personal study only.
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Two new taraxastane‐type triterpenoid saponins and two new neolignans, (6__α__,11__α__)‐6‐[(2‐O‐acetyl‐α‐L‐arabinopyranosyl)oxy]‐3‐oxotaraxast‐20‐ene‐11,28‐diyl diacetate (1), (6__α__,11__α__)‐6‐[(2‐O‐acetyl‐β‐D‐xylopyranosyl)oxy]‐3‐oxotaraxast‐20‐ene‐11,28‐diyl diacetate (2), (1__R__,2__R__,4__E__)‐1,5‐bis(3,4‐dimethoxyphenyl)‐2‐(methoxymethyl)pent‐4‐en‐1‐ol (3), and 1,1′‐[(1__E__,4__R__,5__R__)‐5‐methoxy‐4‐(methoxymethyl)pent‐1‐ene‐1,5‐diyl]bis(3,4‐dimethoxybenzene) (4), together with six known compounds were isolated from the Chinese medicinal plant Morina kokonorica Hao. Their structures were determined on the basis of spectral data, especially 2D‐NMR and HR‐ESI‐MS.
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Two new bisdesmosidic triterpenoid saponins, i.e. 1 and 2, were isolated, besides the three known saponins 3 ± 5, from the MeOH extract of the aerial parts of Achyranthes aspera Linn. (Amaranthaceae). Their structures were elucidated as 2) by NMR spectroscopy, including 2D-NMR experiments (machaeri
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