Lignans and neolignans from the twigs and leaves of Wikstroemia indica (L.) C.A. Mey. with their effects on LPS-induced IL-1β and IL-10 secretion in RAW 264.7 macrophages
Eight compounds were isolated from the water-soluble fraction of Wikstroemia indica (L.) C.A. Mey., including two new neolignans (isonitidanin-4-O-β-D-glucoside (3) and threo-citrusin B (6)), four known neolignans (1, 2, 4, and 5), along with two previously reported lignans (7 and 8). Spectral analysis (1D, 2D NMR, and HR-ESI-MS/MS) was used to identify their chemical structures. Except for compou
