Table 7.
NMR data for argimycin PIII (nigrifactin) and argimycin PIX (1H, 500 MHz; 13C, 150 MHz, in CD3OD).
| Argimycin PIII (nigrifactin) |
Argimycin PIX |
|||
|---|---|---|---|---|
| Carbon | δH (mult, J, Hz) | δC (ppm) | δH (mult, J, Hz) | δC (ppm) |
| 2 | 3.70 (m) | 44.0 | 3.36 (br dt, 13.0) 3.00 (td, 13.0, 2.6) | 44.4 |
| 3 | 1.94 (m) | 19.5 | 1.85 (m) 1.65 (m) | 22.1 |
| 4 | 1.91 (m) | 16.4 | 1.90 (m) 1.56 (qt, 12.9, 2.8) | 21.6 |
| 5 | 3.02 (m) | 24.4 | 2.05 (br dt, 14.0) 1.40 (br dd, 13.0 2.9) | 28.0 |
| 6 | – | 178.5 | 3.06 (m) | 56.0 |
| 7 | 6.43 (d, 15) | 121.3 | 1.72 (m) 1.66 (m) | 33.1 |
| 8 | 7.58 (dd, 15, 11) | 149.5 | 2.20 (m) | 27.3 |
| 9 | 6.45 (dd, 13, 11) | 127.7 | 5.52 (ddd, 14.0, 7.0) | 128.4 |
| 10 | 6.91 (dd, 14,11) | 146.6 | 6.08 (dd, ca 14.0, 12.0) | 131.7 |
| 11 | 6.34 (dd, 14, 11) | 131.3 | 6.04 (dd, ca 14.0, 12.0) | 131.1 |
| 12 | 6.20 (m) | 139.0 | 5.64 (dq, 14.0, 6.8) | 127.3 |
| 13 | 1.90 (br d, 7.0) | 17.5 | 1.73 (br, d, 6.8) | 16.7 |