Table 2.
Position | δC | δH, m (J in Hz) | HMBCb |
---|---|---|---|
2 | 145.8 | ||
3 | 136.2 | ||
4 | 175.9 | ||
5 | 156.0 | ||
6 | 113.4 | ||
7 | 163.0c | ||
8 | 109.4 | ||
9 | 152.4 | ||
10 | 105.8 | ||
1′ | 124.6 | ||
2′ | 113.7 | 7.82, d (2.1) | C-2, C-6′ |
3′ | 145.8 | ||
4′ | 148.4 | ||
5′ | 110.7 | 7.00, d (9.1) | C-1′, C-3′ |
6′ | 121.1 | 7.87, dd (9.1, 2.1) | C-2, C-2′ |
6-CH3 | 8.4 | 2.23, s | C-5, C-6, C-7 |
8-CH3 | 8.7 | 2.41, s | C-7, C-8, C-9 |
7-OCH3 | 60.8 | 3.80, s | C-7 |
4′-OCH3 | 56.2 | 4.00, s | C-4′ |
3-OH | 6.64 | C-3, C-4 | |
3′-OH | 5.71 | C-2′, C-3′ | |
5-OH | 11.80 | C-5, C-10 |
H and 13C chemical shifts with reference to CDCl3 (δH = 7.26 ppm) and CDCl3 (δC = 77.16 ppm), respectively.
HMBC correlations are from the proton stated to the indicated carbon.
obtained from HMBC