摘要
A detailed chemical investigation of the secondary metabolites produced by the endophytic fungus Xylaria sp.isolated from the stems of Isodon sculponeatus afforded six new compounds,xylariahgins A-F(1-6),two new natural products(7 and 8),along with two known compounds(9 and 10)(Fig.1).The structures of all compounds were unambiguously established by analyzing their spectroscopic data or referring to pertinent literature.Compounds 1-8 were tested for their cytotoxic activity against five human tumor cell lines.
基金
supported financially by the National Natural Science Foundation of China(81673329 and 21322204).
