Protons | Proton Chemical Shift (δH) | |
---|---|---|
ECB | ECB Glucuronide | |
H-5 | 6.06 (1H, s) | 6.32 (1H, s) |
H-8 | 2.53 (3H, s) | 2.58 (3H, s) |
H-9 | 1.88 (3H, s) | 1.95 (3H, s) |
H-10 | 3.80 (3H, s) | 3.86 (3H, s) |
OH-2 | 14.28 (1H, s) | 13.94 (1H, s) |
OH-4 | 10.58 (1H, s) | |
Glucuronic acid group | ||
H-1′ | 5.27 (1H, d, J = 7.5Hz) | |
H-2′–4′ | 3.34–3.46 (O) | |
H-5′ | 4.03 (1H, d, J = 10.0Hz) |