Table 4. Hyperpolarizability Values for DHAs and VHFs (Electron-Withdrawing Groups).
| no. | substituents | DHA | VHF | No. | substituents | DHA | VHF |
|---|---|---|---|---|---|---|---|
| 1 | 8a-C(O)Me | 1.48 | 12.28 | 13 | 8a-C(O)NH2 | 1.57 | 12.65 |
| 2 | 8-C(O)Me | 2.10 | 11.48 | 14 | 8-C(O)NH2 | 1.32 | 9.13 |
| 3 | 7-C(O)Me | 0.76 | 11.76 | 15 | 7-C(O)NH2 | 1.81 | 13.73 |
| 4 | 6-C(O)Me | 4.99 | 8.02 | 16 | 6-C(O)NH2 | 1.75 | 12.86 |
| 5 | 5-C(O)Me | 2.19 | 6.88 | 17 | 5-C(O)NH2 | 1.11 | 11.45 |
| 6 | 4-C(O)Me | 2.26 | 14.15 | 18 | 4-C(O)NH2 | 0.69 | 14.37 |
| 7 | 8a-CO2Me | 1.12 | 13.11 | 19 | 8a-C(O)Cl | 0.99 | 11.49 |
| 8 | 8-CO2Me | 0.80 | 12.47 | 20 | 8-C(O)Cl | 2.63 | 13.50 |
| 9 | 7-CO2Me | 0.63 | 12.49 | 21 | 7-C(O)Cl | 0.96 | 10.73 |
| 10 | 6-CO2Me | 2.92 | 10.87 | 22 | 6-C(O)Cl | 7.28 | 5.74 |
| 11 | 5-CO2Me | 1.31 | 10.58 | 23 | 5-C(O)Cl | 3.59 | 6.64 |
| 12 | 4-CO2Me | 0.97 | 16.15 | 24 | 4-C(O)Cl | 2.52 | 13.27 |