Journal
CHEMICAL & PHARMACEUTICAL BULLETIN
Volume 54, Issue 8, Pages 1213-1215Publisher
PHARMACEUTICAL SOC JAPAN
DOI: 10.1248/cpb.54.1213
Keywords
Pleurocybella porrigens; Sugihiratake; Tricholomataceae; conjugated ketonic fatty acid
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Three novel conjugated long-chain fatty acids (1-3) were obtained from aqueous methanol extracts of Pleurocybella porrigens together with nine known constituents including (8E,10E)-7,12-dioxo-8,10-octadecadienoic acid (ostopanic acid) (4). The structures of the new fatty acids were characterized as (14RS)-(10E,12E)-14-hydroxy-9-oxo-10,12-octadecadienoic acid (1), (12RS)-(8E,10E)-12-hydroxy-7-oxo-8,10-octadecadienoic acid (2), and (10E,12E)-9,14-dioxo-10,12-octadecadienoic acid (3) by spectroscopic methods.
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