Table 2
1H-NMR assignment of metabolite (1)
| Assignment | Metabolites | |||||
|---|---|---|---|---|---|---|
| M1 | M2 | M3 | M4 | M5 | M6 | |
| 2′,6′ | 7.35 (AA′BB′,2H) | 7.63 (m,2H) | ||||
| 4′ | ||||||
| 3′,5′ | 7.55 (5H) | 7.55 (5H) | 6.92 (AA′BB′,2H) | 7.43 (3H) | 7.58 (3H)2-a | |
| 7" | 7.07 (s,1H) | 7.20 (s,1H) | 7.19 (s,1H) | 7.20 (s,1H) | 7.12 (s,1H) | 7.19 (s,1H) |
| 4" | 7.06 (s,1H) | 6.92 (s,1H) | 7.10 (s,1H) | 7.10 (s,1H) | 6.87 (s,1H) | 7.10 (s,1H) |
| 1-CH2 | 4.35 (s,2H) | 4.35 (s,2H) | 4.23 (s,2H) | 4.97 (s,2H) | 4.75 (s,2H) | |
| 5"-OCH3 | 4.00 (s,3H) | 3.97 (s,3H) | 3.98 (s,3H) | 3.96 (s,3H) | 3.97 (s,3H) | |
| 6"-OCH3 | 3.93 (s,3H) | 3.89 (s,3H) | 3.90 (s,3H) | 3.89 (s,3H) | 3.89 (s,3H) | |
| 2e,6e | 3.57 (m,2H) | 3.55 (m,2H) | 3.52 (m,2H) | 3.45 (br d,J = 13,2H) | 3.74 (2H) | 3.62 (2H)2-b |
| 3"(HA) | 3.33 (1H) | 3.29 (dd,J = 17,8,1H) | 3.37 (1H) | 3.41 (m,1H) | 3.29 (dd,J = 7,16,1H) | 3.37 (1H) |
| 2a,6a | 3.06 (ddd,J = 11,10,3,2H) | 3.06 (ddd,J = 13,13,3,2H) | 3.00 (br dd,J = 13,12,2H) | 3.05 (ddd,J = 13,13,3,2H) | 3.92 (2H) | |
| 2" | 2.76 (m,1H) | |||||
| 3"(HB) | 2.75 (2H) | 2.72 (dd,J = 17,3,1H) | 2.78 (2H) | 2.80 (2H) | 2.70 (2H) | 2.80 (2H) |
| 3e or 5e | 2.14 (m,1H) | 2.14 (br d,J = 14,1H) | 2.14 (br d,J = 14,1H) | 2.11 (br d,J = 14,1H) | 2.24 (2H) | |
| 3e or 5e | 2.05 (m,1H) | 2.05 (br d,J = 14,1H) | 2.05 (br d,J = 14,1H) | 2.03 (br d,J = 14,1H) | ||
| 4 | ||||||
| 4-CH2(HA) | 1.84 (2H) | 1.90 (2H) | 1.87 (2H) | 1.92 (2H) | 2.07 (2H) | |
| 3a,5a | 1.74 (2H) | 1.90 (4H) | ||||
| 4-CH2 (HB) | 1.46 (3H) | 1.48 (3H) | 1.48 (3H) | 1.47 (3H) | 1.56 (1H) | 1.50 (m,1H) |
