Table 2.
NMR spectrum data of l-tryptophylazetidine.
| Position no.a | Chemical shift (δ ppm) | ||
|---|---|---|---|
| 13C NMR | 1H NMR (integration, multiplicity, J value [Hz]) | ||
| 1 | 171.1 | — | |
| 2 | 53.1 | 4.20 | (1H, dd, 9.0, 6.0) |
| 3 | 29.3 | 3.36 | (1H, dd, 14.4, 6.0) |
| 3.30 | (1H, dd, 14.4, 9.0) | ||
| 4 | 128.1 | 7.33 | (1H, s) |
| 5 | 109.5 | — | |
| 6 | 129.6 | — | |
| 7 | 120.9 | 7.60 | (1H, ddd, 8.1, 0.9, 0.6) |
| 8 | 125.2 | 7.21 | (1H, ddd, 8.1, 7.2, 0.9) |
| 9 | 122.6 | 7.29 | (1H, ddd, 7.8, 7.2, 0.9) |
| 10 | 115.0 | 7.55 | (1H, ddd, 7.8, 0.9, 0.6) |
| 11 | 139.1 | — | |
| 1′ | 51.6 | 3.94 | (1H, tdd, 9.9, 6.0, 0.6) |
| 3.71 | (1H, tdd, 9.9, 6.0, 1.2) | ||
| 2′ | 17.7 | 2.07 | (1H, dtt, 11.4, 9.6, 6.0) |
| 1.75 | (1H, dtt, 11.4, 9.6, 6.0) | ||
| 3′ | 50.6 | 4.02 | (1H, tdd, 9.6, 6.0, 1.2) |
| 3.11 | (1H, tdd, 9.6, 6.0, 0.6) | ||
aPosition numbers are shown in Fig. 2(a).