Searching for multi-target antipsychotics: Discovery of orally active heterocyclic N-phenylpiperazine ligands of D2-like and 5-HT1A receptors

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Abstract

We described herein the design, synthesis, and pharmacological evaluation of N-phenylpiperazine heterocyclic derivatives as multi-target compounds potentially useful for the treatment of schizophrenia. The isosteric replacement of the heterocyclic ring at the biaryl motif generating pyrazole, 1,2,3-triazole, and 2-methylimidazole[1,2-a]pyridine derivatives resulted in 21 analogues with different substitutions at the para-biaryl and para-phenylpiperazine positions. Among the compounds prepared, 4 (LASSBio-579) and 10 (LASSBio-664) exhibited an adequate binding profile and a potential for schizophrenia positive symptoms treatment without cataleptogenic effects. Structural features of this molecular scaffold are discussed regarding binding affinity and selectivity for D2-like, 5-HT1A, and 5-HT2A receptors.

Graphical abstract

This work describes the synthesis and pharmacological evaluation of heteroarylazole N-phenylpiperazines 4–24 as multi-target ligands potentially useful for the treatment of schizophrenia. Among the compounds studied, 4 (LASSBio-579) and 10 (LASSBio-664) exhibited an adequate binding profile and a potential for schizophrenia positive symptoms treatment without cataleptogenic effects.

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Keywords

Atypical antipsychotic drugs
Schizophrenia
N-Phenylpiperazine derivatives
1-Arylpyrazole
1-Aryl-1,2,3-triazole
Imidazo[1,2-a]pyridine

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