Table 1.
NMR data and long-range heteronuclear correlations (DMSO-d6, 300 MHz) for 2′-OH-Torosaol I.
| H/C | 13C (δ) | 1H (mult., J in Hz, int.) | HMBC |
|---|---|---|---|
| 1,1′ | 205.2 | - | - |
| 2,2′ | 78.1 | 4.35 (s, 2H) | C-1/1′, C-3/3′, C-3/3′-Me |
| 3,3′ | 73.1 | - | |
| 4,4′ | 39.8 | 2.32 (d, 16.8, 2H) 2.71(d, 16.8, 2H) |
C-4/4′, C-4a/4a’, C-10/10′ |
| 4a,4a’ | 135.2 | - | - |
| 5,5′ | 95.8 | 5.96 (s, 2H) | C-7/7′-Me, C-10/10′, C-7/7′, C-10/10′ |
| 6,6′ | 161.2 | - | - |
| 7,7′ | 109.7 | - | - |
| 8,8′ | 155.1 | - | - |
| 8a,8a’ | 137.2 | - | - |
| 9,9′ | 162.6 | - | - |
| 9a,9a’ | 107.1 | - | - |
| 10,10′ | 122.9 | - | - |
| 10a,10a’ | 108.2 | - | - |
| 3,3′-Me | 25.9 | 1.09 (s, 6H) | C-2/2′, C-3/3′, C-4/4′, C-4a/4a’ |
| 7,7′-Me | 8.1 | 2.01 (s, 6H) | C-6/6′, C-8/8′, C-7/7′, C-8a/8a’ |
| 6,6′-OMe | 55.1 | 3.38 (s, 6H) | C6/6′ |
| 3,3′-OH | - | 1.17 (s br, 2H) | - |
| 8,8′-OH | - | 10.05 (s br, 2H) | - |
| 9,9′-OH | - | 15.95 (s br, 2H) | - |