Chemical constituents of the ascomycete Daldinia concentrica
Chemical constituents of the ascomycete Daldinia concentrica
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DOI:
10.1021/np020301h
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发表时间:
2002-12-01
影响因子:
5.1
通讯作者:
Asakawa, Y
中科院分区:
文献类型:
--
作者:
Quang, DN;Hashimoto, T;Asakawa, Y
Four compounds, daldinone A (1), daldinone B (2), daldiniapyrone (4-methoxy-5-carbomethoxy-6-pentyl-2H-pyran-2-one, 3), and daldinialanone (22R-hydroxylanosta-7,9(11),24-trien-3-one, 4), were isolated from an ethyl acetate extract of fruit bodies of Daldinia concentrica collected in Europe. In addition, 11 known compounds, 4:5:4':5'-tetrahydroxy-1:1'-binaphthyl (5), 3,4,5-trihydroxy-1-tetralone (6), (+)-orthosporin (7), curuilignan D (8), (22E)-cholesta-4,6,8(14),22-tetraen-3-one (9), 3beta,22-dihydroxylanosta-7,9(11),24-triene (10), concentricol (11), concentricol B (12), concentricol C (13), concentricol D (14), and phenochalasin B (15), were obtained. The structures of the new compounds were elucidated by 2D NMR, MS, IR, and UV spectra and by X-ray crystallographic analysis. The absolute configurations of 1 and 4 were determined by CD spectroscopy and the modified Mosher's method, respectively. The chemotaxonomic relevance of the compounds obtained in this investigation is discussed.