A Honeybee-Safer Pyrazolyl Pyrido[1,2- a ]pyrimidine Mesoionic Targeting Fall Armyworm nAChR α1/β2 Subunits
Spodoptera frugiperda is a highly destructive pest with widespread resistance to conventional insecticides. Mesoionic chemicals are promising for insecticide discovery, yet lepidopteran-active examples remain limited and many raise pollinator-safety concerns. Here, we report a series of pyrazole-decorated mesoionic p...