Year: 2017, Issue: December
Screening and development of novel synthetic substitute Pyrazolophyrimidine-3-coumarins for semiochemicals against Spodoptera litura L. (Lepidoptera : Noctuidae).
P. Vijay Kumar
Semiochemicals, Antifeedant, Repellent, Coumarins, Spodoptera litura.
Coumarins with Pyrazolopyrimidine pendants at the third position were synthesized and evaluated for their activity as semiochemicals against insect Spodoptera litura L. (Lepidoptera : Noctuidae) to evaluate their repellant and antifeedant activity. The test solutions were prepared by dissolving 2 mg of the newly synthesized compound in 1 ml of chloroform. Among six compounds (1-6), compound 3 had shown highest antifeedent activity and compound 5 was with least antifeedent activity when compared to controlled leaf exposed fifth instar test insect larvae. This suggests that compound 3 could be developed in future as antifeedant and repellent against various insect pests in addition to Spodoptera litura based on further studies with other insects.