Table 1.
Position | δC, assignm. | δH, mult. ( J in Hz) | 1H–1H COSY | HMBC |
---|---|---|---|---|
1 | 156.7, Cq | |||
2 | 110.5, CH | 6.41, s br | H-4, 3-CH3 | C-1, C-4, C-12b, 3-CH3 |
3 | 140.1, Cq | |||
4 | 117.6, CH | 6.50, s br | H-2, 3-CH3 | C-2, C-5, C-12b, 3-CH3 |
4a | 131.5, Cq | |||
5 | 130.0, CH | 6.74, d (9.5) | H-6 | C-4, C-4a, C-6a, C-12b |
6 | 134.9, CH | 5.88, d (9.5) | H-5 | C-4a, C-12a |
6a | 75.8, Cq | |||
7 | 66.4, CH | 4.85, d (1.5) | H-12a | C-6a, C-7a, C-8, C-11a, C-12a |
7a | 125.5, Cq | |||
8 | 158.3, Cq | |||
9 | 111.0, CH | 6.85, d (8.3) | H-10, H-11 | C-7a, C-8, C-11 |
10 | 130.1, CH | 7.38, t (7.9) | H-9, H-11 | C-8, C-11a |
11 | 123.3, CH | 7.18, d (7.9) | H-9, H-10 | C-7a, C-9, C-12 |
11a | 133.0, Cq | |||
12 | 82.6, CH | 6.00, d (10.4) | H-12a | C-1, C-6a, C-7a, C-11, C-11a, C-12a, C-12b |
12a | 44.0, CH | 4.11, d (10.4) | H-7, H-12 | C-6a, C-7, C-11a, C-12b |
12b | 122.0, Cq | |||
8-OCH3 | 55.9, CH3 | 3.80, s | C-8 | |
3-CH3 | 22.0, CH3 | 2.24, s | H-2, H-4 | C-2, C-3, C-4 |