Table XV.
1H NMR Data of Narciclasine-Type Alkaloids
| Alkaloid | 68 | 70 | 71 | 72 |
|---|---|---|---|---|
| H-1 | 6.17 ddd | 8.36 dddd | 8.73 dd | 6.98 dd |
| H-2 | 4.23 ddd | 7.61 ddd | 8.02 td | 6.81 ddd |
| H-3 | 3.92 ddd | 7.67 ddd | 8.09 td | 7.28 ddd |
| H-4 | 3.90 dd | 8.11 ddd | 8.31 dd | 6.73 dd |
| H-4a | 4.35 ddd | — | — | — |
| H-6 | — | 9.06 s | 10.42 s | 4.26 d |
| H-6′ | — | — | — | 4.20 d |
| H-7 | — | 7.32 s | 7.97 s | 7.00 s |
| H-10 | 6.75 s | 7.89 s | 8.16 s | 6.67 s |
| OCH2O | 6.01 (2d) | 6.15 s | 6.41 s | 5.99 s |
| NMe | — | — | 4.73 s | 2.73 s |
| Solvent | c | d | b | d |
| MHz | 500 | 200 | 200 | 200 |
| Reference | (122) | (358) | (79) | (358) |
Solvent a: DMSO-d6, b: CDCl3-CD3OD, c: CD3OD, d: CDCl3.