
Antioxidants and α-glucosidase inhibitors from Ipomoea batatas leaves identified by bioassay-guided approach and structure-activity relationships
Keywords: HPLC, high performance liquid chromatography; Semi-HPLC, semi-preparative high performance liquid chromatography; MPLC, medium pressure liquid chromatography; 1D NMR, one-dimensional nuclear magnetic resonance spectroscopy; 2D NMR, two-dimensional nuclear