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  • Title: Novel 3-beta-methoxysteroids from the Senegalese sponge Microscleroderma spirophora.
    Author: Costantino V, Fattorusso E, Mangoni A, Aknin M, Gaydou EM.
    Journal: Steroids; 1994 Mar; 59(3):181-4. PubMed ID: 8048149.
    Abstract:
    The Senegalese sponge Microscleroderma spirophora has been found to produce exclusively very unusual 3 beta-methoxysteroids in place of the common 3 beta-hydroxysteroids. Six different methoxysteroids (three of which are novel compounds) have been isolated and identified by spectroscopic means (MS, IR, 1H and 13C NMR), and their taxonomic significance discussed. A new method for the determination of the configuration at C-24 in saturated 24-ethyl side chains is also proposed.
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