海参皂苷A的结构，一种来自远东海参Psolus eximius的新型三萜糖苷。
Structure of eximisoside A, a novel triterpene glycoside from the Far-Eastern sea cucumber psolus eximius.
作者信息
Kalinin V I, Avilov S A, Kalinina E Y, Korolkova O G, Kalinovsky A I, Stonik V A, Riguera R, Jiménez C
机构信息
Pacific Institute of Bioorganic Chemistry, Far East Division of Russian Academy of Sciences, Vladivostok, Russia.
出版信息
J Nat Prod. 1997 Aug;60(8):817-9. doi: 10.1021/np9701541.
The new triterpene saponin eximisoside A (1) has been isolated from the Far-Eastern sea cucumber Psolus eximius and its structure elucidated by 1D and 2D NMR (13C, 1H, 1H-1H COSY, HMQC, and NOESY spectra), and FABMS studies. The structural features of eximisoside A (1) are the rare presence of a 23 double bond in the aglycon and the absence of quinovose, typically found in the oligosaccharide chain of holothurian glycosides.
新的三萜皂苷eximisoside A（1）已从远东海参Psolus eximius中分离出来，其结构通过一维和二维核磁共振（13C、1H、1H-1H COSY、HMQC和NOESY谱）以及快原子轰击质谱研究得以阐明。Eximisoside A（1）的结构特征是苷元中罕见地存在23位双键，且在海参苷的寡糖链中通常存在的奎诺糖缺失。
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