Table 2.
1H and 13C assignments of piceamycin (1) in d6-DMSO.
| # | δC | Type | δH | mult (J, Hz) |
|---|---|---|---|---|
| 1 | 163.9 | C | ||
| 2 | 121.2 | CH | 5.06 | d (12.9) |
| 3 | 132.5 | CH | 6.26 | dd (12.7) |
| 4 | 122.5 | CH | 7.07 | dd (11.4) |
| 5 | 134.4 | CH | 6.13 | dd (11.4) |
| 6 | 119.9 | CH | 5.99 | dd (11.4, 14.7) |
| 7 | 147.1 | CH | 5.92 | d (14.7) |
| 8 | 40.8 | C | ||
| 9 | 49.4 | CH2 | 2.04 | d (18.9) |
| 2.06 | d (18.9) | |||
| 10 | 213.3 | C | ||
| 11 | 171.0 | C | ||
| 11-OH | 6.74 | br s | ||
| 12 | 127.6 | C | ||
| 13 | 188.8 | C | ||
| 14 | 133.4 | CH | 8.01 | d (15.4) |
| 15 | 136.1 | CH | 6.81 | dd (15.4, 11.4) |
| 16 | 130.8 | CH | 6.43 | dd (14.2, 11.4) |
| 17 | 133.2 | CH | 6.89 | dd (14.2, 10.4) |
| 18 | 128.0 | CH | 6.20 | m (<11)a |
| 19 | 130.7 | CH | 6.22 | m (<11)a |
| 20 | 127.3 | CH | 6.64 | dd (15.2, 8.7) |
| 21 | 130.4 | CH | 6.53 | dd (15.0, 10.4) |
| 22 | 129.1 | CH | 6.06 | dd (10.4) |
| 23 | 135.2 | CH | 5.07 | ma |
| 24 | 33.2 | CH | 2.67 | ma |
| 25 | 43.6 | CH2 | 2.64 | ma |
| 3.35 | ma | |||
| 26 | 29.2 | CH3 | 1.53 | s |
| 27 | 17.6 | CH3 | 0.95 | d (6.3) |
| NH | 7.40 | d (9.9) |
a
Overlapped peaks; coupling constant unknown.