Table 1. Insecticidal activities of PP derivatives 4a–c, 7, and 8.
| Compound | LC90 (ppm) | Mortality at 200 ppm | ||
|---|---|---|---|---|
| M. persicae | L. striatella | F. occidentalis | T. urticae | |
| Odawara (2002)a) | Odawara (2001)a) | Purchaseda) | Purchaseda) | |
| 4a | 19 | 5 | NTb) | NTb) |
| 4b | >100 | 7 | 30 | 0 |
| 4c | >100 | 5 | 25 | 0 |
| 7 | >100 | 0 | 33 | 0 |
| 8 | >100 | NTb) | NTb) | NTb) |
| PP-A | 0.56 | 70 | 0 | 0 |
| PP-I | 0.043 | 15 | 53 | 0 |
a) The insects collected in Japan respectively or purchased were used in insecticide tests. b) Not tested