Pyridine Anthelmintic Compounds Targeting Calcium-Activated Potassium Channels
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Solution Overview
Problem
Current anthelmintic compounds face challenges due to the emergence of resistant worm populations, necessitating the development of new active pharmaceutical ingredients effective against parasitic helminths like Dirofilaria immitis without causing adverse side effects in pets.
Innovation Solution
A new anthelmintic compound, represented by Formula (I), which can be administered orally or topically, targets parasitic helminths by modulating calcium-activated potassium channels, disrupting neuromuscular transmission and slowing helminth development, while being compatible with standard antiparasitic treatments and minimizing host side effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing anthelmintic compounds are used to treat helminth infections, then treatment effectiveness is reduced due to resistant worm populations, but switching to new compounds may increase host side effects
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure of anthelmintic compounds through specific substitution patterns on the pyridine ring (R1-R7 substituents) and linker variations (L groups). These structural parameter changes create new compounds with improved activity against resistant helminth populations while maintaining or reducing host toxicity, as evidenced by the extensive structure-activity relationship data presented in the patent.
Solution Approach 2:
The patent employs composite materials by combining the pyridine core structure with various heterocyclic groups (R19 being heteroaryl or heterocyclyl) and different linker moieties (L being O, S, SO, SO2, or CH2). This composite molecular architecture allows for optimized interaction with helminth targets while minimizing adverse effects on host animals, resolving the contradiction between effectiveness and safety.
2Reliability
If new anthelmintic compounds are developed to overcome resistance, then treatment efficacy against resistant populations improves, but drug complexity and development cost increase
Solution Approach 1:
The patent applies segmentation by dividing the anthelmintic compound into distinct functional modules: a pyridine core (providing basic structure), variable substituents R1-R7 (providing specificity), linker groups L (providing connectivity), and terminal heterocyclic groups R19 (providing target interaction). This modular segmentation allows systematic optimization of each component to achieve efficacy against resistant populations while managing overall molecular complexity.
Solution Approach 2:
The patent implements universality by designing a platform compound where the pyridine core with variable substituents can target multiple helminth species and resistance mechanisms. The consistent core structure with modifiable periphery allows a single compound design to address diverse resistant populations, reducing development complexity compared to creating entirely new compounds for each resistance scenario.
3Reliability
If anthelmintic compounds are administered to treat heartworm disease, then helminth development is slowed and neuromuscular transmission is disrupted, but potential adverse effects on host neuromuscular function may occur
Solution Approach 1:
The patent applies local quality by designing compounds with specific substituent patterns (R1-R7) and heterocyclic groups (R19) that create localized interaction zones preferentially binding to helminth calcium-activated potassium channels. The molecular structure is optimized to have high affinity for helminth channel targets while showing reduced affinity for host channel isoforms, thereby achieving selective anti-helminth activity with minimized neuromuscular side effects in the host.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The compound effectively treats helminth infections, including heartworm disease, by targeting specific calcium-activated potassium channels in helminths, offering a solution to resistant populations and ensuring safety for the host animals.
Implementation Method 1
targets specific calcium-activated potassium channels in helminths, offering a solution to resistant populations
Data Source
AI summary
The present invention relates to new anthelmintic compounds. These compounds can for example be used in the treatment of the kind of worm disease caused by helminths such as Dirofilaria, in particular Dirofilaria immitis.