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Dihydroxanthenones from the fermentation product of an endophytic fungus Gliomastix murorum
- Yang, Hai-Ying, Niu, De-Yun, Wang, Lu, Wang, Su-Juan, Zhang, Cheng-Ming, Gao, Xue-Mei, Du, Gang, Hu, Qiu-Fen
- Journal of Asian natural products research 2015 v.17 no.4 pp. 319-323
- cytotoxicity, endophytes, fermentation, fungi, inhibitory concentration 50, nuclear magnetic resonance spectroscopy
- Three new dihydroxanthones, muroxanthenones A–C (1 – 3), together with three known dihydroxanthones (4 – 6) were isolated from the fermentation products of an endophytic fungus Gliomastix murorum . Their structures were elucidated by spectroscopic methods, including extensive 1D and 2D NMR techniques. Compound 3 showed high cytotoxicities against NB4 and PC3 cell with IC ₅₀ values of 2.2 and 2.8 μM. The other compounds also showed moderate cytotoxicities for some tested cell lines with IC ₅₀ values between 4.1 and 9.5 μM.