Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
Topsentinols A-J, New Sterols with Highly Branched Side Chains from Marine Sponge Topsentia sp.
Masami ISHIBASHI, Emiko YAMAGISHI, Jun'ichi KOBAYASHI
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Keywords: sponge, Topsentia sp., 7-hydroxysterol, topsentinol, antifungal activity
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1997 Volume 45 Issue 9 Pages 1435-1438

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Abstract
Topsentinols A-J (1-10), new 7-hydroxysterols with unusual polyalkylated side chains were obtained from the Okinawan marine sponge Topsentia sp. and their structures elucidated on the basis of spectral data. Side chains containing the 22E-24-isopropenyl-25-methyl-22-ene group (in 1, 6) and the 22Z-24-isopropyl-22-ene group (in 2, 7) are unprecedented.
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© The Pharmaceutical Society of Japan
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