Table 2.
NMR data (700 MHz 1H, 175 MHz 13C, DMSO-d6) for 3′-epiverrucarin X (3)
| Position | δC, type | δH (mult., J) | NOESY | HMBC |
|---|---|---|---|---|
| 2 | 78.1, CH | 3.75, d (5.0) | 13a | |
| 3α | 34.5, CH2 | 2.43, d (8.1) | 11 | 2, 5, 11 |
| 3β | 1.98, dt (15.7, 4.8) | |||
| 4 | 75.7, CH | 5.79, dd (8.1, 3.8) | 11, 15 | |
| 5 | 48.9, C | |||
| 6 | 43.6, C | |||
| 7α | 19.3, CH2 | 1.60, t (12.8) | 3′ | 7 |
| 7β | 1.70, t (15.7) | 2′, 4′b | ||
| 8α | 22.1, CH2 | 1.80, m | ||
| 8β | 2.28, d (8.1) | |||
| 9 | 137, C | |||
| 10 | 131.0, CH | 6.43, brs | 16 | |
| 11 | 65.1, CH | 3.87, d (3.4) | 3α, 4 | 5, 9, 10 |
| 12 | 65.2, C | |||
| 13a | 46.9, CH2 | 3.00, d (4.0) | 2 | 12 |
| 13b | 2.75, d (4.1) | 14 | 12 | |
| 14 | 7.0, CH3 | 0.71, s | 13b | 4, 5, 6, 11 |
| 15a | 61.6, CH2 | 4.23, d (12.3) | 4, 3′ | 5, 6, 11, 1′ |
| 15b | 4.05, d (12.7) | 5, 6, 7 | ||
| 16 | 168, C | |||
| 1′ | 173.5, C | |||
| 2′ | 72.7, CH | 4.02, d (1.9) | 7β, 4′b | 1′, 3′, 4′, 12′ |
| 3′ | 32.3, CH | 2.15, m | 7α, 15a | |
| 4′a | 31.9, CH2 | 1.76, t (15.7) | ||
| 4′b | 1.59, t (12.8) | 7β, 2′ | ||
| 5′a | 61.1, CH2 | 4.29, m | ||
| 5′b | 3.89, t (4.8) | 12 | ||
| 6′ | 164.9, C | |||
| 7′ | 127.3, CH | 6.18, d (15.6) | 6′, 9′ | |
| 8′ | 138.5, CH | 7.79, dd (15.6, 11.6) | 6′, 10′ | |
| 9′ | 138.1, CH | 6.82, d (11.4) | 7′, 11′ | |
| 10′ | 126.3, CH | 6.28, d (11.1) | 8′, 11′ | |
| 11′ | 165.6, C | |||
| 12′ | 10.5, CH3 | 0.73, d (6.8) | 5′b | 2′, 3′, 4′ |