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Xu, Guo-Bo,Yang, Tao,Bao, Jin-Ku,Fang, Dong-Mei,Li, Guo-You 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.5
Isochaetomium $A_2$ (1), a new bis(naphthodihydropyran-4-one), along with chaetochromins A (2) and B (3), was isolated from the solid-state fermented rice culture of Chaetomium microcephalum. The structure of compound 1 was elucidated on the basis of 1D and 2D NMR spectral data, and the relative configuration was confirmed by CD spectrum. Compounds 1-3 possessed significant antimicrobial activity against Escherichia coli 1.044, Staphylococcus aureus 1.252, and Bacillus subtilis 1.079. Moreover, compounds 1-3 showed obvious inhibitory effects on mouse spleen cell proliferation with successive $IC_{50}$ values of 0.52, 0.19, and $0.24{\mu}M$.
Guo-Bo Xu,Tao Yang,Jin-ku Bao,Dong-Mei Fang,Guo-You Li 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.5
Isochaetomium A2 (1), a new bis(naphthodihydropyran-4-one), along with chaetochromins A (2) and B(3), was isolated from the solid-state fermented rice cultureof Chaetomium microcephalum. The structure of compound1 was elucidated on the basis of 1D and 2D NMRspectral data, and the relative configuration was confirmedby CD spectrum. Compounds 1–3 possessed significantantimicrobial activity against Escherichia coli 1.044,Staphylococcus aureus 1.252, and Bacillus subtilis 1.079. Moreover, compounds 1–3 showed obvious inhibitoryeffects on mouse spleen cell proliferation with successiveIC50 values of 0.52, 0.19, and 0.24 lM.