Boron-Containing Crop Protection Agents

Overview

This research program focuses on developing boron-containing reversible covalent inhibitors as next-generation crop protection agents. The approach centers on targeting highly conserved enzymatic pathways in plants and pathogens, specifically the Caseinolytic protease P (ClpP) complex found in chloroplasts and 5-enolpyruvoylshikimate-3-phosphate synthase (EPSPS). By leveraging boron chemistry, the platform aims to create highly specific inhibitors with novel mechanisms of action, addressing the growing need for new crop protection solutions in modern agriculture.

The technology builds on established boron-based inhibitor chemistry, including alpha-aminoboronic acids and beta-aminoboronic acids, which have demonstrated activity against bacterial ClpP across multiple species. This research extends the approach to plant-specific targets, opening new avenues for selective and effective crop protection products.

Technical specifications

Key features:

• Boron-containing reversible covalent inhibitors designed for high specificity against target enzymes
• ClpP targeting of the conserved serine protease complex in chloroplasts, disrupting proteolytic activity essential for plant and pathogen function
• EPSPS targeting through beta-aminoboronic acid derivatives capable of forming covalent linkages with carbohydrate substrates
• Multicomponent reaction chemistry using boryl isocyanide reagents to generate diverse compound libraries
• Structure-activity relationship development to optimize selectivity and potency against Arabidopsis thaliana ClpP

The approach combines synthetic chemistry with biochemical validation, enabling systematic exploration of inhibitor analogs to refine molecular properties for agricultural applications.

Technology readiness level

The research is at an early-to-mid stage of development. Alpha-aminoboronic acids have already demonstrated activity against bacterial ClpP from multiple species, establishing proof-of-concept for the boron-based inhibitor approach. Current work focuses on expanding chemical diversity through analog libraries and validating activity against plant-specific ClpP. Future efforts will extend the platform to EPSPS inhibition through novel beta-aminoboronic acid chemistry, with ongoing validation against enzymatic targets to establish efficacy profiles for crop protection applications.