Pires V S, Gosmann G, Guillaume D, Schenkel E P
Nat Prod Lett. 2002 Dec;16(6):401-6. doi: 10.1080/10575630290033187.
Two new saponins were isolated from the leaves of Ilex psammophila. Their structure was established by chemical and spectroscopic methods as 28-O-beta-D-glucopyranosylester of 20(S)-ilexgenin A ([structure: see text]) and 28-O-beta-D-glucopyranosylester of 20(S)-3beta,19alpha,24-trihydroxyurs-12-ene-23, 28-dioic acid ([structure: see text]).
从沙冬青叶中分离出两种新皂苷。通过化学和光谱方法确定它们的结构分别为20(S)-冬青皂苷元A的28-O-β-D-吡喃葡萄糖苷酯（[结构：见原文]）和20(S)-3β,19α,24-三羟基乌苏-12-烯-23,28-二酸的28-O-β-D-吡喃葡萄糖苷酯（[结构：见原文]）。
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