The present invention provides the compound of Formula I which can be isolated from Antrodia cinnamomea. The present invention also provides a method to prepare the compound of Formula I. The said compound can induce cell death and apoptosis of nasopharyngeal cancer cells, and can therefore be used as a substitute or supplement for the treatment of nasopharyngeal cancer.本發明係提供一種從牛樟菇中分離的式I化合物,亦提供一種式I化合物的製備方法。本發明之式I化合物具有促進鼻咽癌細胞凋亡之作用,可提供作為一種抗鼻咽癌藥物之替代物或輔助補充物。