Chemical investigation of an endophytic fungus Chaetomium globosum isolated from leaves of Wikstroemia uva-ursi led to the isolation of two new azaphilones, chaetoviridins J and K (1 and 3), along with five known derivatives (2 and 4–7). The structures of azaphilones were determined by NMR, X-ray diffraction, Mosher’s method, and CD analysis. The isolated compounds were evaluated for their cancer
的内生真菌的
化学调查球毛壳菌从叶中分离荛UVA-URSI导致了两个新azaphilones的隔离,chaetoviridins J和K(1和3)中,用5个已知衍
生物(沿2和4 - 7)。通过NMR,X射线衍射,Mosher法和CD分析确定氮杂苯酮的结构。根据分离的化合物抑制肿瘤坏死因子α(TNF-α)诱导的核因子κB(NF-κB)的能力,评估其
化学预防作用。化合物4,5,7,和合成的8和9抑制
一氧化氮(NO)的产生,IC 50值在0.3–5.8μM范围内。化合物4,5,和9也显示(TNF-α)诱导的NF-κB活性,IC 50个在0.9-5.1μM的范围内的值。