Antimalarials. 4. Trichloronaphthalene amino alcohols

Area of Science:

• Medicinal Chemistry
• Organic Synthesis
• Parasitology

Background:

• Naphthalene amino alcohols represent a class of compounds with potential therapeutic applications.
• Antimalarial drug discovery is crucial due to increasing drug resistance.
• Structure-activity relationships (SAR) guide the development of new drug candidates.

Purpose of the Study:

• To develop an improved synthesis for naphthalene amino alcohols.
• To evaluate the antimalarial activity of newly synthesized naphthalene amino alcohol derivatives against Plasmodium berghei.
• To explore SAR between naphthalene and quinoline analogs.

Main Methods:

• Synthesis of four novel naphthalene amino alcohol compounds.
• In vivo antimalarial testing using Plasmodium berghei infected mice.
• Comparative analysis of structure-activity relationships.

Main Results:

• Successful synthesis of four new naphthalene amino alcohol compounds.
• All synthesized compounds demonstrated significant activity against Plasmodium berghei.
• Compound 16b, 1-[3-(4-chlorophenyl)-5,7-dichloro-1-naphthyl]-3-(di-n-butylamino)propanol hydrochloride, exhibited the highest antimalarial potency.
• Preliminary SAR data comparing naphthalene and quinoline scaffolds were obtained.

Conclusions:

• The improved synthesis provides access to novel naphthalene amino alcohol derivatives.
• These compounds represent a promising new class of antimalarial agents.
• Further investigation into compound 16b and related structures is warranted for antimalarial drug development.