Table 1.
1H-NMR and 13C-NMR data of ustiloxin G (1) in D2O (δ in ppm, J in Hz).
| Position | δC a | δH, mult. (J in Hz) b | HMBC c |
|---|---|---|---|
| C (2) | 86.8 | - | - |
| CH (3) | 59.2 | 4.83, s | C (2), C (17), CH3 (21) |
| C (5) | 170.7 | - | - |
| CH (6) | 59.7 | 4.13, d (10.1) | C (5), C (8), CH (24) |
| C (8) | 165.7 | - | - |
| CH (9) | 66.2 | 4.29, d (9.9) | C (8), C (10) |
| NCH3 (9) | 31.7 | 2.77, s | C (9) |
| CH (10) | 73.5 | 4.93, d (10.1) | C (9), C (11), C (12) |
| C (11) | 127.7 | - | - |
| C (12) | 136.1 | - | - |
| CH (13) | 113.6 | 7.58, s | C (11), C (12), C (14), C (15) |
| C (14) | 151.8 | - | - |
| C (15) | 145.6 | - | - |
| CH (16) | 123.8 | 7.08, s | - |
| C (17) | 170.0 | - | - |
| CH2 (19) | 43.6 d | 3.77, s | C (17), COOH (20) |
| COOH (20) | 175.9 e | - | - |
| CH3 (21) | 20.8 | 1.75, s | C (2), CH (3), CH2 (22) |
| CH2 (22) | 31.9 e | 1.70, m; 2.21, m |
- |
| CH3 (23) | 7.5 | 1.08, t (7.3) | - |
| CH (24) | 28.4 | 1.88, m | - |
| CH3 (25) | 18.0 | 0.77, d (6.7) | CH (6), CH (24), CH3 (26) |
| CH3 (26) | 17.6 | 0.87, d (6.6) | CH (6), CH (24), CH3 (25) |
| CH2 (2’) | 60.1 | 2.98, br.d (13.6); 3.41, m |
C (12) |
| CH2 (3’) | 55.4 | 4.04, m | - |
Note: a Recorded at 100 MHz. b Recorded at 400 MHz. c HMBC correlations are from proton(s) stated to the indicated carbon. d 13C shifts are assigned by HMQC experiments. e 13C shifts are assigned by HMBC experiments.