Three new dinormonoterpenoid glucosides from pericarps of Myriopteron extensum
2015
Dai, Qin | Wang, Yue-Hu | Zhang, Hong-Xia | Sun, Guo | Du, Zhi-Zhi
Three new dinormonoterpenoid glucosides, rel-(3R,4R)-3-(1-hydroxypropan-2-yl)-3,4-epoxypentane-1,5-diol-1-O-β-d-glucopyranoside (1), rel-(3R,4S)-3-(1-hydroxypropan-2-yl)-3,4-epoxypentane-1,5-diol-1-O-β-d-glucopyranoside (2), and rel-(3R,4S)-3-(1-hydroxy-2-propen-2-yl)-3,4-epoxypentane-1,5-diol-1-O-β-d-glucopyranoside (3), were isolated from the edible pericarps of Myriopteron extensum (Wight & Arn.) K. Schum. (Asclepiadaceae). Their structures were elucidated by chemical and spectroscopic methods including HRESIMS, 1D and 2D NMR. Dinormonoterpenoid glucosides were reported from Asclepiadaceae for the first time. Compounds 1–3 were evaluated for their cytotoxicity against five human cancer cell lines HL-60, SMMC-7221, A-549, MCF-7, and SW-480, but they did not exhibit cytotoxicity on the tested cell lines.
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