Configurational Relationship between Substituents on Cyclopropane Ring of Pyrethroids and Their Insecticidal Toxicity |
| |
| Authors: | Takeyoshi Sugiyama Akio Kobayashi Kyohei Yamashita |
| |
| Institution: | Department of Agricultural Chemistry, Faculty of Agriculture, Tohoku University, Sendai, Japan |
| |
| Abstract: | Several methyl-substituted cyclopropanecarboxylates were prepared and their steric configurations were established. The insecticidal activity against the housefly of their 5-benzyl-3-furylmethyl esters were tested. Among the substituents on cyclopropane ring, cis-methyl group to ester linkage has been found to be the most essential part for toxicity and trans-methyl and trans-isobutenyl groups greatly enhance its toxic activity. |
| |
| Keywords: | coumarins anisumarin Rutaceae Clausena anisum-olens Merr |
|
