N-acyl derivatives of 2-aryl-bicyclo[3.1.1]heptan-1-amines as novel fungicide scaffolds

Overview

This offering presents a new class of N-acyl derivatives built on an unprecedented 2-aryl-bicyclo[3.1.1]heptan-1-amine scaffold. The compounds have been designed to mimic succinate dehydrogenase inhibitor (SDHI) fungicides, one of the most important classes of crop protection agents, while introducing a structurally novel core. By replacing the conventional 2-aryl aniline fragment found in existing SDHIs with a bicyclic amine system, these molecules offer a differentiated shape and three-dimensional conformation that may translate into improved binding affinity, novel modes of action, and the potential to overcome resistance mechanisms that have eroded the performance of established SDHI fungicides.

The central scaffold is unprecedented in both pharmaceutical and agrochemical applications, opening a wide chemical space for exploration. These compounds are positioned for agrochemical partners seeking next-generation fungicide candidates with proprietary structural novelty.

Technical specifications

Core innovation:

• A novel 2-aryl-bicyclo[3.1.1]heptan-1-amine ring system that serves as a bioisostere for the 2-aryl aniline fragment commonly used in SDHI fungicides
• N-acyl functionalization that retains the key pharmacophoric features required for succinate dehydrogenase inhibition
• Unique three-dimensional shape and conformation relative to known SDHIs, which may impact binding interactions with the target enzyme

Potential advantages:

• Novel scaffold may address known resistance issues affecting current SDHI fungicides
• Proprietary chemical space with no prior reported use in pharmaceutical or agrochemical applications
• Structural differentiation that could support new intellectual property positions

Technology readiness level

This technology is at an early discovery stage. The compounds have been designed and synthesized based on a clear rationale that links their novel conformation to potential improvements in binding and resistance management. Further biological evaluation, structure-activity relationship studies, and field validation will be required to confirm efficacy, spectrum of activity, and commercial viability as fungicide candidates.