Constituents from solid-cultured Antrodia camphorata.

Antrodia camphorata is a rare and precious traditional food and medicine for improving health-related conditions in Taiwan. The phytochemical research of the mushroom led to the isolation of a new naphthalenecarboxaldehyde, named as 1-Naphthalenecarboxaldehyde,3,4,4a,5,6,7,8,8a-octahydro-2-(hydroxymethyl)-5,5,8a-trimethyl (1). Meanwhile, seven other known compounds of nerolidol (2), cadinol (3), herbarulide (4), 3β-Hydroxy-5a,8a-epidioxyergosta-6,22-diene (5), ergosta-7,22-diene-3,6-dione (6) 2,3-dimethoxy-5-methyl-p-benzoquinone (7) and β-sitosterol (8) were also obtained from A. camphorata for the first time except compound (8). The new compound was elucidated by 2D NMR techniques (COSY, HMBC, HSQC, NOESY) and HRMS while those known compounds deduced by comparing1 H NMR and13 C NMR data with other literatures. Then, the hepG2 cell toxicity screening was conducted and the results demonstrated that only compound 7 and 8 exhibited significant toxicity to hepG2 cell at the concentration of 50 μg/mL.