Marine Sterols. XIV. Isolation of (24S)-24-Methyl-5α-cholestane-3β, 5, 6β, 25ζ, 26-pentol from the Soft Coral Sarcophyton glaucum

Abstract

(24S)-24-Methyl-5α-cholestane-3β, 5, 6β, 25ζ, 26-pentol (1) was isolated from the soft coral Sarcophyton glaucum. The structure of 1 was confirmed by the spectroscopic data and by the synthesis of a C-25 isomeric mixture of 1 starting from codisterol acetate (5a), which is one of the main components in the 3β-monohydroxysterol fraction of S. glaucum.