Two new secondary metabolites from Xylaria sp. cfcc 87468

A new isocoumarin glycoside, 3R-(+)-5-O-[6'-O-acetyl]-α-D-glucopyranosyl-5-hydroxymellein (1), and a new phenylethanol glycoside, (-)-phenylethyl-8-O-α-L-rhamno-pyranoside (2), were isolated from the ethyl acetate extract of the fungus Xylaria sp. cfcc 87468, together with five known steroids,...

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Veröffentlicht in:	Molecules (Basel, Switzerland) Switzerland), 2014-01, Vol.19 (1), p.1250-1257
Hauptverfasser:	Wang, Fuqian, Han, Shishi, Hu, Song, Xue, Yongbo, Wang, Jianping, Xu, Hongfeng, Chen, Lu, Zhang, Geng, Zhang, Yonghui
Format:	Artikel
Sprache:	eng
Schlagworte:	Circular Dichroism isocoumarin glycoside Isocoumarins - chemistry Isocoumarins - isolation & purification Magnetic Resonance Spectroscopy Metabolites Molecular Conformation Molecular Motor Proteins Monosaccharides - chemistry Monosaccharides - isolation & purification Pharmacy phenylethanol glycoside Steroids Steroids - chemistry Steroids - isolation & purification Xylaria Xylariales - chemistry
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Zusammenfassung:	A new isocoumarin glycoside, 3R-(+)-5-O-[6'-O-acetyl]-α-D-glucopyranosyl-5-hydroxymellein (1), and a new phenylethanol glycoside, (-)-phenylethyl-8-O-α-L-rhamno-pyranoside (2), were isolated from the ethyl acetate extract of the fungus Xylaria sp. cfcc 87468, together with five known steroids, β-sitosterol (3), stigmast-4-en-3-one (4), ergosterol (5), (22E)-cholesta-4,6,8(14),22-tetraen-3-one (6), and 4α-methyl- ergosta-8(14),24(28)-dien-3β-ol (7). The structures of compounds 1 and 2 were elucidated by MS, extensive 1D and 2D NMR spectroscopy, and the circular dichroism (CD) spectroscopy.
ISSN:	1420-3049 1420-3049
DOI:	10.3390/molecules19011250