Table 2 NMR (500 MHz, methanol-d4) data for angiolactone (1)
From: Angiolactone, a new Butyrolactone isolated from the terrestrial myxobacterium, Angiococcus sp.
Pos | δH, mult (J in Hz) | δCa | COSY | HMBC |
|---|---|---|---|---|
1 | 175.1 | |||
2 | 2.83, dd (7.9, 6.7) | 52.2 | 7 | 1, 3, 6, 7, 8 |
3 | 80.8 | |||
4 | 153.2 | |||
5 | 5.25, s | 105.8 | 3, 4, 2′, 6′ | |
6a | 2.96, d (13.6) | 41.2 | 2, 3, 4, 1′′, 2′′, 6′′ | |
6b | 2.65, d (13.6) | 2, 3, 4, 1′′, 2′′, 6′′ | ||
7 | 1.82, m | 22.8 | 2, 8a/b | 1, 2, 3, 8 |
8a | 1.61, m | 37.8 | 7, 8b | |
8b | 1.48, m | 7, 8a, 9 | ||
9 | 1.65, m | 29.1 | 8b, 10, 11 | |
10 | 0.98b, d (6.4) | 22.8 | 9 | 8, 9, 11 |
11 | 0.97b, d (6.4) | 22.8 | 9 | 8, 9, 10 |
1′ | 135.2 | |||
2′ | 7.40, d (7.6) | 129.4 | 3′ | 5, 4′, 6′ |
3′ | 7.27, dd (7.6, 7.0) | 129.1 | 2′, 4′ | 1′, 5′ |
4′ | 7.17, dd (7.2, 7.0) | 127.6 | 3′, 5′ | 2′, 6′ |
5′ | 7.27, dd (7.6, 7.2) | 129.1 | 4′, 6′ | 1′, 3′ |
6′ | 7.40, d (7.6) | 129.4 | 5′ | 5, 2′ 4′ |
1′′ | 127.5 | |||
2′′ | 7.00, d (8.3) | 132.8 | 3′′ | 6, 4′′, 6′′ |
3′′ | 6.63, d (8.3) | 115.3 | 2′′ | 1′′, 4′′, 5′′ |
4′′ | 157.4 | |||
5′′ | 6.63, d (8.3) | 115.3 | 6′′ | 1′′, 3′′, 4′′ |
6′′ | 7.00, d (8.3) | 132.8 | 5′′ | 6, 2′′, 4′′ |
