ABSTRACT
A novel class of mesoionic pyrido[1,2-a]pyrimidinones has been discovered with exceptional insecticidal activity controlling a number of insect species. In this communication, we report the part of the optimization program that led to the identification of dicloromezotiaz as a potent insecticide to control a broad range of lepidoptera. Our efforts in discovery, synthesis, structure-activity relationship elucidation, and biological activity evaluation are also presented.
Subject(s)
Lepidoptera/drug effects , Pyrimidinones/chemistry , Pyrimidinones/pharmacology , Receptors, Nicotinic/metabolism , Animals , Insecticides/chemistry , Insecticides/pharmacology , Protein Binding/drug effects , Receptors, Nicotinic/chemistry , Structure-Activity RelationshipABSTRACT
A novel class of mesoionic pyrido[1,2-a]pyrimidinones has been discovered with exceptional insecticidal activity controlling a number of insect species. In this communication, we report the part of the optimization program which led to the discovery of triflumezopyrim as a highly potent insecticide controlling various hopper species. Our efforts in discovery, synthesis, structure-activity relationship elucidation, and biological activity evaluation are also presented.
Subject(s)
Drug Discovery , Insecticides/pharmacology , Orthoptera/drug effects , Pyridines/pharmacology , Pyrimidinones/pharmacology , Animals , Dose-Response Relationship, Drug , Insecticides/chemistry , Molecular Structure , Pyridines/chemistry , Pyrimidinones/chemistry , Species Specificity , Structure-Activity RelationshipABSTRACT
Oxathiapiprolin is the first member of a new class of piperidinyl thiazole isoxazoline fungicides with exceptional activity against plant diseases caused by oomycete pathogens. It acts via inhibition of a novel fungal target-an oxysterol binding protein-resulting in excellent preventative, curative and residual efficacy against key diseases of grapes, potatoes and vegetables. Oxathiapiprolin is being developed globally as DuPont™ Zorvec™ disease control with first registration and sales anticipated in 2015. The discovery, synthesis, optimization and biological efficacy are presented.
