Table 2 13 C in Norlignans as potent GLP- 1 secretagogues from the fruits of Amomum villosum

Table 2 13 C NMR (150 MHz) data of compounds 1–4 (δ in ppm). No.1 a2 a3 a4 b1129.4 C128.9 C133.6 C128.2 C2106.1 CH105.2 CH111.9 CH104.4 CH3149.6 C149.5 C147.5 C147.5 C4137.4 C137.1 C149.0 C135.5 C5149.6 C149.5 C116.0 CH147.5 C6106.1 CH105.2 CH121.4 CH104.4 CH782.6 CH76.7 CH79.8 CH81.3 CH875.5 CH70.5 CH286.4 CH74.5 CH917.6 CH3–17.5 CH317.6 CH31′131.3 C131.6 C135.7 C120.4 CH2′111.2 CH111.5 CH107.5 CH110.1 CH3′149.9 C150.1 C154.3 C149.0 C4′132.4 C132.0 C135.4 C133.4 C5′145.9 C145.7 C135.4 C144.9 C6′106.8 CH107.0 CH107.5 CH104.4 CH7′21.4 CH321.4 CH322.0 CH3–3-OMe57.0 CH357.0 CH356.5 CH356.6 CH34-OMe––56.7 CH3–5-OMe57.0 CH356.8 CH3–56.6 CH33′-OMe56.8 CH356.2 CH356.7 CH356.4 CH3 a Recorded in CD3OD. b Recorded in CDCl3.