Abstract
Two new sulfated steroidal glycosides, rainiatoside A[1] and miniatoside Β[2], have been isolated from the H2O extracts of the whole bodies of the starfish Patiria miniata. They co-occur with two known sulfated steroidal monoglycosides 6 and 7 and seven polyhydroxy-steroids, among which two are new (3 and 5). The structures of the new compounds were determined as (24R)-29-O-(5’-O-methyl-2’-O-sulfate-α-L-arabinofuranosyl)-24-ethyl-5α-cholestane-3β,6α,8,15α,16β,29-hexaol (miniatoside A[1]), (24S)-24-O-[β-D-xylopyranosyl-(1↦2)-3’-O-sulfate-α-L-arabinofuranosyl]-5α-cholestane-3β,6α,8,15α,24-pentaol (miniatoside Β [2]), (22E,24R,25R)-24-methyl-5α-cholest-22-ene-3β,4β,6α,7α,8,15β,16β,25,26-nonaol 6-sulfate[3], and (25S)-24-methyl-5α-cholest-24(28)-en-3β,4β,6α,7α,8,15β,16β,26-octaol [5]. © 1990, American Chemical Society. All rights reserved.
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