Table 2. Substitution pattern of hydroxypyrazolines (7a-7r) and intermediate hydroxychalcones (3a-3r).
Comp No. | R1 | R2 | R3 | R4 | R5 | R6 |
---|---|---|---|---|---|---|
3a, 7a | H | H | H | OCH3 | OCH3 | H |
3b, 7b | H | H | H | OCH3 | H | OCH3 |
3c, 7c | H | H | H | H | OCH3 | OCH3 |
3d, 7d | H | H | OCH3 | OCH3 | OCH3 | H |
3e, 7e | H | H | OCH3 | OCH3 | H | OCH3 |
3f, 7f | H | H | OCH3 | H | OCH3 | OCH3 |
3g, 7g | H | CH3 | H | OCH3 | OCH3 | H |
3h, 7h | H | CH3 | H | OCH3 | H | OCH3 |
3i, 7i | H | CH3 | H | H | OCH3 | OCH3 |
3j, 7j | H | Cl | H | OCH3 | OCH3 | H |
3k, 7k | H | Cl | H | OCH3 | H | OCH3 |
3l, 7l | H | Cl | H | H | OCH3 | OCH3 |
3m, 7m | H | H | OH | OCH3 | OCH3 | H |
3n, 7n | H | H | OH | OCH3 | H | OCH3 |
3o, 7o | H | H | OH | H | OCH3 | OCH3 |
3p, 7p | OH | H | H | OCH3 | OCH3 | H |
3q, 7q | OH | H | H | OCH3 | H | OCH3 |
3r, 7r | OH | H | H | H | OCH3 | OCH3 |