Four New Terpenoids from Xylaria sp 101

One new diterpenoid, xylarenolide (1), and three new sesquiterpenoids, xylaranol A (2), xylaranol B (3), and xylaranic acid (4), were obtained from the fungal strain Xylaria sp. 101, which was isolated from the fruiting body of Xylaria sp. collected in Gaoligong Mountain, Yunnan Province. Their structures were elucidated by spectroscopic analyses, including 1D- and 2D-NMR experiments, and by HR-Q-TOF mass spectrometry. Their antimicrobial activities were evaluated.