Table 1 1 H in Norlignans as potent GLP- 1 secretagogues from the fruits of Amomum villosum

Table 1 1 H NMR (600 MHz) data of compounds 1–4 (δ in ppm, J in Hz).
No.1 a2 a3 a4b26.68 s6.74 s6.97 d (1.9)6.52 s5––6.76 d (8.1)–66.68 s6.74 s6.82 dd (8.1,6.52 s1.9)74.544.98 dd (8.8, 2.4)4.59 d (7.6)4.49 d (7.9)d (7.9)8a4.08 m3.94 dd (11.3,4.03 m4.05 m8.8)8b–4.33 dd (11.3,––2.4)91.24–1.06 d (6.3)1.19 d (6.2)d (6.4)1′–––6.75 t (8.2)2′6.41 s6.40 s6.52 s6.57 dd (8.2,1.4)6′6.37 s6.40 s6.52 s6.47 dd (8.2,1.4)7′2.23 s2.24 s2.31 s–3-OMe3.86 s3.85 s3.84 s3.85 s4-OMe––3.84 s–5-OMe3.86 s3.85 s–3.85 s3′-3.82 s3.80 s3.83 s3.84 sOMe
a Recorded in CD3OD.
b Recorded in CDCl3.