STRUCTURE OF EXIMISOSIDE-A, A NOVEL TRITERPENE GLYCOSIDE FROM THE FAR-EASTERN SEA-CUCUMBER PSOLUS-EXIMIUS

Authors
KALININ VI AVILOV SA KALININA EY KOROLKOVA OG KALINOVSKY AI STONIK VA RIGUERA R JIMENEZ C
Citation
Vi. Kalinin et al., STRUCTURE OF EXIMISOSIDE-A, A NOVEL TRITERPENE GLYCOSIDE FROM THE FAR-EASTERN SEA-CUCUMBER PSOLUS-EXIMIUS, Journal of natural products, 60(8), 1997, pp. 817-819
Citations number
10
Categorie Soggetti
Chemistry,"Plant Sciences","Pharmacology & Pharmacy","Chemistry Medicinal
Journal title
Journal of natural products → ACNP
ISSN journal
01633864
Volume
60
Issue
8
Year of publication
1997
Pages
817 - 819
Database
ISI
SICI code
0163-3864(1997)60:8<817:SOEANT>2.0.ZU;2-M
Abstract
The new triterpene saponin eximisoside A (1) has been isolated from th e Far-Eastern sea cucumber Psolus eximius and its structure elucidated by 1D and 2D NMR (C-13, H-1, H-1-H-1 COSY, HMQC, and NOESY spectra), and FABMS studies. The structural features of eximisoside A (1) are th e rare presence of a 23 double bond in the aglycon and the absence of quinovose, typically found in the oligosaccharide chain of holothurian glycosides.