Research Article
Study of Catalytic Hydrogenation and Methanol Addition to α-Methylene-γ-Lactone of Eremanthine Derivatives
Table 2
Selected chemical shifts for the hydrogens of isomers 34 and 35.
| Hydrogens | δ (multiplicity, /Hz) | Isomer 34 | Isomer 35 |
| H-6 | 4.02 (t, 10.2) | 3.96 (dd, 9.8, 10.7) | Ha-13 | 6.13 (d, 3.5) | 6.27 (d, 3.4) | Hb-13 | 5.41 (d, 3.2) | 5.52 (d, 3.1) | H-14 | 0.96 (d, 7.2) | 1.04 (d, 6.6) | H-15 | 1.34 (s) | 1.36 (s) |
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