中文摘要：

从一株深海沉积物来源真菌Phialocephala sp．中分离得到了一个新的倍半萜对苯二酚（1）。结合波谱学数据以及旋光性确定了它的平面和立体结构。化合物1对小鼠白血病细胞P388和人白血病细胞K562均显示了很强的增殖抑制活性，其IC50值分别为0．16和0.05μmol·L^-1。

英文摘要：

A new sesquiterpene hydroquinone （I） was isolated from a deep sea sediment derived fungus, Phialocephala sp.. Its structure and stereochemistry were established on the basis of spectroscopic data and optical rotation. This compound was tested for cytotoxicity against P388 （murine leukemia cell） and K562 （human leukemia cell） cell lines, and displayed strong cytotoxic effects with IC50 value of 0.16 and 0.05 μmol·L^-1, separately.