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Three new ubiquinone derivatives, antrocamol LT1, antrocamol LT2, and antrocamol LT3, along with two known compounds, were isolated from Antrodia camphorata (Polyporaceae) mycelium. The structures of these compounds were established on the basis of extensive 1D and 2D NMR spectroscopic analyses. These ubiquinones exhibited selective cytotoxicities against five human cancer cell lines (CT26, A549,...
In this study, 4 new triterpenoids—3β- acetoxy-olean-11-en,28,13β-olide (1), 3β- acetoxy-11α,12α-epoxy-olean-28,13β-olide (2), 19α-epi-betulin (3), and 20, 28-epoxy-17β,19β-lupan-3β-ol (4)—and 12 known compounds, were isolated from the root bark of Hibiscus syriacus L. by using acetone extraction. Their structures were characterized by extensive spectroscopic analysis. To investigate cytotoxicity,...
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