In this study, we examined protective effect of Sargassum thunbergii on reactive oxygen species (ROS) mediated oxidative stress in cellular systems. In addition, polyunsaturated fatty acids from S. thunbergii were identified and quantified by gas chromatography mass spectroscopy. Intracellular ROS
Derivatives of podophyllotoxin were prepared by coupling 10 FA with the C4-alpha-hydroxy function of podophyllotoxin. The coupling reactions between FA and podophyllotoxin were carried out by dicyclohexylcarbodiimide in the presence of a catalytic amount of dimethylaminopyridine to produce
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