Table 1.
1H NMR (δ, DMSO-d6,J in Hz in parentheses) data of compounds 3 and 11-14a
| compd | H-2 | H-5 | H-12 | H-14 & H-18 | H-1′ | H-3′ & H-7′ | H-9 (N) | H-2″& H-6″ |
|---|---|---|---|---|---|---|---|---|
| 3 | 8.92 s | 8.75 s | 5.51 s | 7.33 d (8.7) | 5.08 s | 7.29 d (8.7) | -- | -- |
| 11 | 7.87 s | 7.53 s | -- | -- | 4.63 dd (15.1, 18.3) | 7.19 d (8.6) | 9.82 s | 6.68 d (8.6) |
| 12 (CDCl3) | 7.69 s | 7.65 s | 5.13 q (14.2) | 7.08 d (8.6) | 4.72 s | 7.33 d (8.6) | 9.47 s | 6.72 d (8.6) |
| 13 | 7.83 s | 7.50 s | -- | -- | 4.62 dd (15.1, 18.3) | 7.20 d (8.72) | 9.68 s | 6.56 d (9.2) |
| 14 | 7.85 s | 7.50 s | -- | -- | 4.60 dd (15.1, 18.3) | 7.22 d (8.72) | 9.4 s | 5.80 d (H-2″) (8.72) |
a
Assignments are based on DEPT, HMQC and HMBC experiments.