Table 1.
13C and 1H-NMR spectroscopic data (1H 500 MHZ, 13C 125 MHZ in Methanol-d4, δ in ppm) for isolated and synthetic compound 6.
| Position | 6 | Synthetic 6 | ||
|---|---|---|---|---|
| δC, Type | δH (J in Hz) | δC, Type | δH (J in Hz) | |
| 2 | 157.4, C | 157.3, C | ||
| 3/21 | 115.9, CH | 6.69, m | 115.7, CH | 6.71, m |
| 4/22 | 132.6, CH | 6.98, m | 132.5, CH | 6.97, m |
| 5 | 127.6, C | 127.3, C | ||
| 6 | 36.6, CH2 | 3.07, dd (14.1, 3.9) | 36.5, CH2 | 3.07, dd (14.1, 3.9) |
| 2.90, dd (14.1, 3.3) | 2.89, dd (14.1, 3.1) | |||
| 7 | 63.8, CH | 4.10, t (3.6) | 63.8, CH | 4.10, m |
| 9 | 177.3, C | 175.5, C | ||
| 10 | 102.3, C | 102.1, C | ||
| 11 | 194.0, C | 191.8, C | ||
| 12 | 37.2, CH | 3.40, sxt (6.8) | 36.8, C | 3.39, sxt (6.8) |
| 13 | 35.3, CH2 | 1.16, tdd (12.9, 6.4, 4.3) | 35.1, CH2 | 1.13, m |
| 1.09, m | ||||
| 14 | 28.3, CH2 | 0.83, tddd (12.9, 8.5, 6.5, 4.4) | 28.1, CH2 | 0.83, m |
| 1.32, m | 1.32, m | |||
| 15 | 33.6, CH2 | 2.06, dq (12.8, 6.2) | 33.4, CH2 | 2.06, m |
| 1.79, m | 1.79, m | |||
| 16 | 139.1, CH | 5.67, ddd (15.5, 8.8, 5.9) | 139.0, CH | 5.68, m |
| 17 | 126.6, CH | 5.26, ddd (15.5, 8.9, 3.8) | 126.7, CH | 5.26, m |
| 18 | 68.1, CH2 | 4.64, dd (13.4, 8.9) | 67.9, CH2 | 4.64, dd (13.4, 9.5) |
| 4.53, dd (13.4, 3.8) | 4.53, m | |||
| 19 | 197.3, C | 197.1, C | ||
| 20 | 15.4, CH3 | 1.05, d (6.8) | 15.2, CH3 | |