Year: 2017, Issue: December

Screening and development of novel synthetic substitute Pyrazolophyrimidine-3-coumarins for semiochemicals against Spodoptera litura L. (Lepidoptera : Noctuidae).

Author:

P. Vijay Kumar

Keyword:

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.

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