Table 2.
IC50 (µM) values of cytotoxic activity of the extract, fractions, isolates, and semi-synthetic derivatives.
| IC50 (µM) | |
|---|---|
| Samples | KB-3-1 |
| 1 | ˃50 |
| 2 | Inactive |
| 3 | Inactive |
| 3a | Inactive |
| 3b | ˃500 |
| 3c | ˃500 |
| 4 | Inactive |
| 4b | Inactive |
| 5 | Inactive |
| 5a | Inactive |
| 6 | 50 |
| 6a | ˃500 |
| 7 | Inactive |
| 9 | 10 |
| FTAE1 | Inactive |
| FTAE2 | Inactive |
| FTAE3 | Inactive |
| TAE | Inactive |
| Griseofulvin | 17–21 |
TAE: Total alkaloid extract; FTAE1: Fraction 1 of total alkaloid extract; FTAE2: Fraction 2 of total alkaloid extract; FTAE3: Fraction 3 of total alkaloid extract