Minor saponins from the starfish asterias forbesi
Findlay J.A.; He Z Q.; Blackwell B.
Canadian Journal of Chemistry 68(7): 1215-1217
1990
ISSN/ISBN: 0008-4042 DOI: 10.1139/v90-188
Accession: 007555247
The structures of three new saponins from the starfish Asterias forbesi have been elucidated by spectroscopic means. Forbeside F is the hydrate of the monosodium salt of 6.alpha.-O-{[.beta.-D-fucopyranosyl(1.fwdarw.4)-O-[.beta.-D-quinovopyranosyl(1.fwdarw.2)]-O-.beta.-D-quinovopyranosyl(1.fwdarw.3)-O-6-deoxy-.beta.-D-xylo-hexos-4-ulopyranosyl}-20S-hydroxy-3.beta.-sulfo-oxy-5.alpha.-cholest-9(11)-en-23-one. Forbeside G is the hydrate of the monosodium salt of 6.alpha.-O-{[.beta.-D-quinopyranosyl(1.fwdarw.2)]-O-.beta.-D-quinovopyranosyl(1.fwdarw.3)-O-6-deoxy-.beta.-D-xylo-hexos-4-ulopyranosyl}-20S-hydroxy-3.beta.-sulfo-oxy-5.alpha.-cholest-9(11)-en-23-one. Forbeside H is the monosodium salt of 6.alpha.-O-{[.beta.-D-quinovopyranosyl(1.fwdarw.2)]-.beta.-D-xylopyranosyl(1.fwdarw.3)-.beta.-D-quinovopyranosyl}-20S-hydroxy-3.beta.-sulfo-oxy-5.alpha.-cholest-9(11)-en-23-one.