Table 1.
13C and 1H NMR data for compounds 1 and 2, δ in ppm (quantity, multiplicity and J/Hz).
| Moromycin A (1) | Moromycin B (2) | |||
|---|---|---|---|---|
| Position | δCa | δHb | δCa | δHb |
| 1 | 195.5 | - | 196.0 | - |
| 2 | 51.6 | 2.91 (1Ha, d, 16.5); 3.31 (1He, dd, 16.5, 1.5) | 53.5 | 3.08 (1H, d, 17.1); 3.11 (1H, dd, 17.1, 1.5) |
| 3 | 76.2 | - | 72.0 | - |
| 4 | 41.3 | 3.23 (1Ha, d, 14.9); 3.44 (1He, dd, 14.9, 1.5) | 44.1 | 3.30 (1H, d, 14.9); 3.32 (1H, dd, 14.9, 1.5) |
| 4a | 148.4 | - | 149.4 | - |
| 5 | 134.4 | 7.80 (1H, d, 7.8) | 134.2 | 7.75 (1H, d, 7.9) |
| 6 | 128.8 | 8.34 (1H, d, 7.8) | 128.7 | 8.31 (1H, d, 7.9) |
| 6a | 133.4 | - | 133.6 | - |
| 7 | 188.2 | - | 188.3 | - |
| 7a | 115.1 | - | 115.3 | - |
| 8 | 157.9 | - | 157.8 | - |
| 8-OH | - | 12.75 (1H, br s) | - | 12.75 (1H, br s) |
| 9 | 136.3 | - | 136.3 | - |
| 10 | 136.4 | 7.96 (1H, d, 7.9) | 136.4 | 7.96 (1H, d, 7.8) |
| 11 | 118.5 | 7.63 (1H, d, 7.9) | 118.7 | 7.62 (1H, d, 7.8) |
| 11a | 135.8 | - | 135.6 | - |
| 12 | 182.4 | - | 182.6 | - |
| 12a | 133.6 | - | 133.7 | - |
| 12b | 133.7 | - | 133.8 | - |
| 13 | 25.2 | 1.53 (3H, s) | 28.8 | 1.48 (3H, s) |
| 1A | 71.3 | 5.05 (1H, dd, 11.0,1.6) | 71.4 | 5.06 (1H, dd, 11.0,1.6) |
| 2A | 36.6 | 1.59 (1Ha, ddd, 13.0, 11.0, 3.7); 2.41 (1He, ddd, 13.0, 3.8,1.1) | 36.9 | 1.64 (1Ha, ddd, 13.0, 11.0, 3.7); 2.47 (1He, ddd, 13.0, 3.8, 1.2) |
| 3A | 76.5 | 3.90 (1H, ddd, 13.0, 9.0, 3.8) | 76.7 | 3.90 (1H, m) |
| 4A | 74.1 | 3.58 (1H, dd, 9.1, 9.0) | 74.0 | 3.58 (1H, dd, 9.0, 9.0) |
| 5A | 74.2 | 3.60 (1H, dq, 9.0, 6.1) | 74.5 | 3.62 (1H, dq, 9.0, 5.8) |
| 6A | 16.9 | 1.34 (3H, d, 6.1) | 17.3 | 1.34 (3H, d, 5.8) |
| 1B | 91.3 | 5.13 (1H, d, 1.2) | 91.5 | 5.25 (1H, d, 2.9) |
| 2B | 71.1 | 4.43 (1H, ddd, 2.9, 2.9, 2.9) | 71.6 | 4.44 (1H, ddd, 3.0, 3.0, 3.0) |
| 3B | 39.7 | 2.55 (1Ha, dd, 12.9, 3.0) ; 2.84(1He, dd, 12.9, 3.0) | 40.0 | 2.54 (1 Ha, dd, 12.9, 3.0); 2.81(1 He, dd, 12.9, 3.0) |
| 4B | 207.7 | - | 207.6 | - |
| 5B | 77.3 | 4.79 (1H, q, 6.2) | 77.6 | 4.79 (1H, q, 6.2) |
| 6B | 16.6 | 1.27 (3H, d, 6.8) | 16.0 | 1.26 (3H, d, 6.2) |
| 1C | 91.4 | 5.25 (1H, d, 2.1) | - | - |
| 2C | 25.1 | 1.72 (1Ha, m), 1.76 (1He, m) | - | - |
| 3C | 24.0 | 1.80 (1Ha, m),1.82 (1He, m) | - | - |
| 4C | 76.4 | 3.63 (1H, m) | - | - |
| 5C | 66.2 | 3.97 (1H, dq, 9.1, 6.8) | - | - |
| 6C | 15.6 | 1.12 (3H, d, 6.8) | - | - |
| 1D | 95.0 | 5.26 (1H, d, 2.1) | - | - |
| 2D | 144.2 | 7.03 (1H, dd, 10.0, 2.8) | - | - |
| 3D | 126.2 | 6.01 (1H, d, 10.0) | - | - |
| 4D | 196.4 | - | - | - |
| 5D | 70.0 | 4.48 (1H, q, 6.2) | - | - |
| 6D | 14.5 | 1.20 (3H, d, 6.2) | - | - |
a
d6-acetone, 100.6 MHz.
b
d6-acetone, 400 MHz.