The invention also relates to {HEAD ~ methods} for isolating {TAIL ~ the compounds} from herbivorous insect oral secretions and to chemically synthesizing the compounds and their active derivatives 
for isolating
The invention also relates to { HEAD ~ methods } for isolating { TAIL ~ the compounds } from herbivorous insect oral secretions and to chemically synthesizing the compounds and their active derivatives
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH