龙葵果中的甾体皂苷。
Steroidal saponins from the fruits of Solanum torvum.
机构信息
Laboratoire de Pharmacognosie, EA 4267 FDE/UFC, Faculté de Pharmacie, Université de Bourgogne, Dijon, France.
出版信息
Phytochemistry. 2013 Feb;86:137-43. doi: 10.1016/j.phytochem.2012.10.010. Epub 2012 Dec 5.
Seven steroidal glycosides have been isolated from the fruits of Solanum torvum Swartz. Their structures were established by 2D NMR spectroscopic techniques ((1)H,(1)H-COSY, TOCSY, NOESY, HSQC, and HMBC) and mass spectrometry as (25S)-26-(β-D-glucopyranosyloxy)-3-oxo-5α-furost-20(22)-en-6α-yl-O-β-D-xylopyranoside (1), (25S)-26-(β-D-glucopyranosyloxy)-3-oxo-22α-methoxy-5α-furostan-6α-yl-O-β-D-xylopyranoside (2), (25S)-26-(β-D-glucopyranosyloxy)-3β-hydroxy-22α-methoxy-5α-furostan-6α-yl-O-α-L-rhamnopyranosyl-(1→3)-β-D-glucopyranoside (3), (25S)-3β-hydroxy-5α-spirostan-6α-yl-O-β-D-xylopyranoside (4), (25S)-3-oxo-5α-spirostan-6α-yl-O-β-D-xylopyranoside (5), (25S)-3β-hydroxy-5α-spirostan-6α-yl-O-β-D-glucopyranoside (6), (25S)-3β,27-dihydroxy-5α-spirostan-6α-yl-O-β-D-glucopyranoside (7).
从茄科植物颠茄 Swartz 的果实中分离得到了 7 种甾体糖苷。通过二维 NMR 波谱技术（(1)H,(1)H-COSY、TOCSY、NOESY、HSQC 和 HMBC）和质谱确定了它们的结构，分别为 (25S)-26-(β-D-吡喃葡萄糖基氧基)-3-氧代-5α-呋甾-20(22)-烯-6α-基-O-β-D-吡喃木糖苷（1）、(25S)-26-(β-D-吡喃葡萄糖基氧基)-3-氧代-22α-甲氧基-5α-呋甾烷-6α-基-O-β-D-吡喃木糖苷（2）、(25S)-26-(β-D-吡喃葡萄糖基氧基)-3β-羟基-22α-甲氧基-5α-呋甾烷-6α-基-O-α-L-鼠李吡喃糖基-(1→3)-β-D-吡喃葡萄糖苷（3）、(25S)-3β-羟基-5α-螺甾烷-6α-基-O-β-D-吡喃木糖苷（4）、(25S)-3-氧代-5α-螺甾烷-6α-基-O-β-D-吡喃木糖苷（5）、(25S)-3β-羟基-5α-螺甾烷-6α-基-O-β-D-吡喃葡萄糖苷（6）、(25S)-3β,27-二羟基-5α-螺甾烷-6α-基-O-β-D-吡喃葡萄糖苷（7）。
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