Polar metabolites from the Antarctic starfish Labidiaster annulatus

Purification of the ethanolic extract of the Antarctic starfish L. annulatus has led to the isolation of two sulfated pentaglycosides (1, 2) and to the polyhydroxylated steroid (25S)-5α-cholestane-3β,6β,15α,16β,26-pentaol (3). Saponin 1 contains a novel pentasaccharide chain attached to C-6 of the s...

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Bibliographic Details
Main Authors: Diaz De Vivar, M.E., Maier, M.S., Seldes, A.M.
Format: Journal/Newspaper
Language:unknown
Subjects:
Antarc*
Antarctic
Online Access:https://hdl.handle.net/20.500.12110/paper_03650375_v87_n5-6_p247_DiazDeVivar
Description
Summary:Purification of the ethanolic extract of the Antarctic starfish L. annulatus has led to the isolation of two sulfated pentaglycosides (1, 2) and to the polyhydroxylated steroid (25S)-5α-cholestane-3β,6β,15α,16β,26-pentaol (3). Saponin 1 contains a novel pentasaccharide chain attached to C-6 of the steroidal aglycone. Identification of the compounds relied on interpretation of spectral data (1H-NMR, 13C-NMR, FABMS) and on acid and enzymatic hydrolysis. Fil:Maier, M.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Seldes, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.

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