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Two highly conjugated ergosterols from the fungus Psathyrella rogueiana and their anti-inflammatory activity
Tao Feng1,2, Wang-Qiu Deng1, Ji-Kai Liu2
1State Key Laboratory of Applied Microbiology Southern China; Institute of Microbiology, Guandong Academy of Scinces, Guangzhou 510070, China.
Abstract:
Two previously undescribed ergosterols containing a highly conjugated ring system, psathrosterols A and B (1 and 2), have been isolated from the fungus Psathyrella rogueiana. Their structures with absolute configurations were established by extensive spectroscopic methods, as well as single crystal X-ray diffraction. Compounds 1 and 2 showed inhibitory activity against NO production with IC50 values of 22.3 and 16.4 μM, respectively.
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