Table 1.
1H NMR assignments of propolins A, B, C, D, E and F
| Position | Propolin A δH | Position | Position B δH (J, Hz) | Position | Propolin C δH (J, Hz) | |||
|---|---|---|---|---|---|---|---|---|
| 2β | CH | 5.47 (dd,13.3, 2.7) | 2β | CH | 5.23 (dd,13.0, 3.0) | 2β | CH | 5.12 (dd, 12.8, 2.8) |
| 3β | CH2 | 2.60 (dd, 17.2, 2.7) | 3β | CH2 | 2.68 (dd, 17.2, 3.0) | 3β | CH2 | 2.60 (dd, 17.1, 2.8) |
| 3α | 3.10 (dd,17.2,13.3) | 3α | 3.03 (dd, 17.2,13.0) | 3α | 3.10 (dd, 17.1,12.8) | |||
| 6 | CH | 5.878 (d, 2.0) | 6 | CH | 5.86 (d,1.9) | 8 | CH | 5.85 (s) |
| 8 | CH | 5.882 (d, 2.0) | 8 | CH | 5.88 (d,1.9) | 2′ | CH | 6.81 (br s) |
| 5′ | CH | 6.72 (d, 8.3) | 2′ | CH | 6.76 (d,1.5) | 5′ | CH | 6.73 (d, 8.0) |
| 6′ | CH | 6.87 (d, 8.3) | 6′ | CH | 6.68 (d,1.5) | 6′ | CH | 6.68 (dd, 8.0, 1.4) |
| 1″ | CH2 | 3.46 (d, 6.3) | 1″ | CH2 | 3.33 (d,6.6) | 1″ | CH2 | 3.15 (d, 6.9) |
| 2″ | CH | 5.12 (t, 6.4) | 2″ | CH | 5.33 (t,7.0) | 2″ | CH | 5.12 (t, 6.9) |
| 4″ | CH3 | 1.64 (s) | 4″ | CH3 | 1.70 (s) | 4″ | CH3 | 1.66 (s) |
| 5″ | CH2 | 1.95 (t, 7.3) | 5″ | CH2 | 2.03 (t,6.8) | 5″ | CH2 | 1.85 (t, 6.9) |
| 6″ | CH2 | 1.42 (m) | 6″ | CH2 | 1.50 (m) | 6″ | CH2 | 1.95 (m) |
| 7″ | CH2 | 1.35 (t, 7.3) | 7″ | CH2 | 1.41 (t, 6.8) | 7″ | CH | 4.96 (t,6.9) |
| 9″ | CH3 | 1.12 (s) | 9″ | CH3 | 1.36 (s) | 9″ | CH3 | 1.46 (s) |
| 10″ | CH3 | 1.12 (s) | 10″ | CH3 | 1.36 (s) | 10″ | CH3 | 1.53 (s) |
| Position | Propolin D δH (J, Hz) | Position | Propolin E δH (J, Hz) | Position | Propolin F δH (J, Hz) | |||
|---|---|---|---|---|---|---|---|---|
| 2β | CH | 5.46 (dd, 13.4, 2.6) | 2β | CH | 5.20 (dd, 11.6, 3.0) | 2β | CH | 5.23 (dd, 12.4, 3.1) |
| 3β | CH2 | 2.60 (dd, 17.2, 2.6) | 3β | CH2 | 2.60 (dd, 17.1, 3.0) | 3β | CH2 | 2.60 (dd, 17.2, 3.1) |
| 3α | 3.10 (dd, 17.2, 13.4) | 3α | 3.10 (dd, 17.1, 11.6) | 3α | 3.10 (dd, 17.2,12.4) | |||
| 6 | CH | 5.88 (s) | 6 | CH | 5.86 (d, 2.0) | 6 | CH | 5.87 (d, 2.0) |
| 8 | CH | 5.88 (s) | 8 | CH | 5.88 (d, 2.0) | 8 | CH | 5.88 (d, 2.0) |
| 5′ | CH | 6.71 (d, 8.3) | 2′ | CH | 7.16 (d, 2.1) | 2′ | CH | 6.78 (d,1.8) |
| 5′ | CH | 6.77 (d, 8.2) | ||||||
| 6′ | CH | 6.87 (d, 8.3) | 6′ | CH | 7.10 (dd, 8.2, 2.1) | 6′ | CH | 6.67 (d, 1.8) |
| 1″ | CH2 | 3.46 (d, 6.6) | 1″ | CH2 | 3.32 (d, 6.6) | 1″ | CH2 | 3.34 (d, 7.0) |
| 2″ | CH | 5.10 (t, 6.6) | 2″ | CH | 5.30 | 2″ | CH | 5.31 (t, 7.0) |
| 4″ | CH3 | 1.64 (s) | 4″ | CH3 | 1.69 (s) | 4″ | CH3 | 1.69 (s) |
| 5″ | CH2 | 1.95 (t, 7.3) | 5″ | CH2 | 2.03 (t, 6.8) | 5″ | CH2 | 2.02 (t, 7.3) |
| 6″ | CH2 | 2.01 (m) | 6″ | CH2 | 1.50 (m) | 6″ | CH2 | 2.09 (m) |
| 7″ | CH | 5.02 (t, 7.3) | 7″ | CH2 | 1.40 (t, 6.8) | 7″ | CH | 5.09 (t, 7.3) |
| 9″ | CH3 | 1.54 (s) | 9″ | CH3 | 1.13 (s) | 9″ | CH3 | 1.55 (s) |
| 10″ | CH3 | 1.59 (s) | 10″ | CH3 | 1.13 (s) | 10″ | CH3 | 1.61 (s) |