A minimalistic approach to develop new anti-apicomplexa polyamines analogs

Area of Science:

• Medicinal Chemistry
• Parasitology
• Cheminformatics

Background:

• Parasitic diseases pose a significant global health burden, necessitating the development of new therapeutic agents.
• Existing treatments face challenges such as drug resistance and toxicity, driving the search for novel chemical entities.

Purpose of the Study:

• To synthesize and evaluate a library of diamine analogs as potential antiparasitic agents.
• To investigate the structure-activity relationships of N,N -disubstituted and N,N,N ',N '-tetrasubstituted aliphatic diamines against apicomplexan parasites.

Main Methods:

• A minimalist approach combined with chemoinformatics tools for library design.
• In vitro evaluation of synthesized diamine analogs against Toxoplasma gondii and Plasmodium falciparum (chloroquine-sensitive and resistant strains).
• Synthesis of N,N,N ',N '-tetrasubstituted derivatives to assess the role of secondary amines.

Main Results:

• Several N,N '-disubstituted aliphatic diamines exhibited potent in vitro activity at submicromolar concentrations.
• High selectivity was observed against Toxoplasma gondii and Plasmodium falciparum.
• N,N,N ',N '-tetrasubstituted derivatives showed significantly reduced activity compared to their disubstituted counterparts.

Conclusions:

• N,N '-disubstituted aliphatic diamines represent a promising class of compounds for antiparasitic drug development.
• The presence of secondary amines is crucial for potent activity against these parasites.
• Further theoretical studies are warranted to elucidate the electronic factors governing compound activity.