Minor asterosaponin archasteroside C from the starfish Archaster typicus

摘要

A new minor asterosaponin (205)-6-O-{β-D-fucopyranosyl-(1->2)-p-D-fucopyranosyl-(1->4)-[β-D-quinovopyranosyl-(1->2)]-β-D-quinovopyranosyl-(1->3)-(3-D-quinovopyranosyl}-3β,6α,20-trihydroxycholest-9(11)-en-23-one 3-sulfate (archasteroside C) was isolated from the starfish Archaster typicus collected in shallow coastal waters of Vietnam. The structure of archasteroside C was determined by 2D NMR spectroscopy and electrospray ionization (ESI) tandem mass spectrometry.