Three New Triterpenes from Xylarialean sp A45, an Endophytic Fungus from Annona squamosa L
Lin, X. A.
Lu, C. H.
Shen, Y. M.
- 生命科学－已发表论文 
From the fermentation extract of Xylarialean sp. A45, an endophytic fungus of Annona squamosa L., three new triterpenes, namely xylariacins A-C (1-3, resp.) were obtained. Their structures were determined by spectroscopic analyses, including 1D- and 2D-NMR experiments and HR-ESI-Q-TOF mass spectrometry. The in vitro cytotoxic activities of compounds 1-3 were tested against human tumor cell line HepG2, and these compounds showed modest cytotoxic activity.