Table 1.
The structures of chalcone derivatives 1–41.
| Compd. | R in A-ring | R′ in B-ring | Compd. | R in A-ring | R′ in B-ring |
|---|---|---|---|---|---|
| 1 | 3,4-OH | 3-OH | 22 | 3,4-OCH3 | 3,5-F |
| 2 | 3,4-OCH3 | 3-OH | 23 | 4-OCH3 | 3,4-OH |
| 3 | 3,4-OH | 4-NH2 | 24 | 4-OCH3 | 3,4-OCH3 |
| 4 | 3,4-OCH3 | 4-NH2 | 25 | 3-OH, 4-OCH3 | 3,4-OH |
| 5 | 3,4-OH | 4-OCH3 | 26 | 3-OH, 4-OCH3 | 3,4-OCH3 |
| 6 | 3,4-OCH3 | 4-OCH3 | 27 | 2,4-OCH3 | 3,4-OH |
| 7 | 3,4-OH | 4-OCH2CH3 | 28 | 2,4-OCH3 | 3,4-OCH3 |
| 8 | 3,4-OCH3 | 4-OCH2CH3 | 29 | 2-OCH3 | 3,4-OH |
| 9 | 3,4-OH | 4-Cl | 30 | 2-OCH3 | 3,4-OCH3 |
| 10 | 3,4-OCH3 | 4-Cl | 31 | 2,3-OCH3 | 3,4-OH |
| 11 | 3,4-OH | 2-F | 32 | 2,3-OCH3 | 3,4-OCH3 |
| 12 | 3,4-OCH3 | 2-F | 33 | 2,5-OCH3 | 3,4-OH |
| 13 | 3,4-OH | 2-Cl | 34 | 2,5-OCH3 | 3,4-OCH3 |
| 14 | 3,4-OCH3 | 2-Cl | 35 | 4-Cl | 3,4-OH |
| 15 | 3,4-OH | 4-F | 36 | 4-Cl | 3,4-OCH3 |
| 16 | 3,4-OCH3 | 4-F | 37 | 3,4-Cl | 3,4-OH |
| 17 | 3,4-OH | 3,4-F | 38 | 3,4-Cl | 3,4-OCH3 |
| 18 | 3,4-OCH3 | 3,4-F | 39 | 3,4,5-OCH3 | 3,4-OH |
| 19 | 3,4-OH | 3,4-OCH3 | 40 | 3,4,5-OCH3 | 3,4-OCH3 |
| 20 | 3,4-OCH3 | 3,4-OCH3 | 41 | 3,4-OCH3 | 3,4-OH |
| 21 | 3,4-OH | 3,5-F |