A Novel Insect Antifeedant Nonprotein Amino Acid from Calotropis gigantea
Giganticine (1), a novel nonprotein amino acid, has been isolated from a methanol extract of the root bark of Calotropis gigantea and its structure established by spectroscopic methods. It exhibited a significant antifeedant activity against nymphs of the desert locust Schistocerca gregaria.
Pari
K
Division of Entomology, Indian Agricultural Research Institute, New Delhi 110 012, India, Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi 110 012, India, and Department of Chemistry, M. M. Post Graduate College, Modinagar 201 204, UP, India.
Rao
PJ
Devakumar
C
Rastogi
JN