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Terpenoid and Phenolic Metabolites from the Fungus Xylaria sp. Associated with Termite Nests
Author(s) -
Yan Sha,
Li Saifei,
Wu Wen,
Zhao Feng,
Bao Li,
Ding Rong,
Gao Hao,
Wen HuaAn,
Song Fuhang,
Liu HongWei
Publication year - 2011
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.201100026
Subject(s) - chemistry , sesquiterpene , absolute configuration , stereochemistry , terpenoid , terpene , fungus , derivative (finance) , tetralone , organic chemistry , botany , biology , financial economics , economics
Three new sesquiterpene acids, xylaric acids A–C ( 1 – 3 , resp.), and a new tetralone (=3,4‐dihydronaphthalen‐1(2 H )‐one) derivative, 4 , along with nine known compounds, xylaric acid D ( 5 ), hydroheptelidic acid ( 6 ), gliocladic acid ( 7 ), chlorine heptelidic acid ( 8 ), trichoderonic acid A ( 9 ), 16‐( α ‐ D ‐mannopyranosyloxy)isopimar‐7‐en‐19‐oic acid ( 10 ), 16‐( α ‐ D ‐glucopyranosyloxy)isopimar‐7‐en‐19‐oic acid ( 11 ), 5‐carboxymellein ( 12 ), and naphthalen‐1,8‐diol 1‐ O ‐ α ‐ D ‐glucopyranoside ( 13 ) have been isolated from the solid culture of the ascomycete fungus Xylaria sp. associated with termite nest. The structures of these compounds were elucidated primarily by NMR experiments. The absolute configurations of compounds 1 – 3 and 5 – 9 were determined by combination of X‐ray data and CD spectral analysis. The absolute configuration of 4 was assigned by Snatzke 's method. Compounds 8 and 11 showed slight cytotoxicities against two cell lines A549 and SGC7901.