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  3. Design, synthesis, kinetic, molecular dynamics, and hypoglycemic effect characterization of new and potential selective benzimidazole derivatives as Protein Tyrosine Phosphatase 1B inhibitors

Design, synthesis, kinetic, molecular dynamics, and hypoglycemic effect characterization of new and potential selective benzimidazole derivatives as Protein Tyrosine Phosphatase 1B inhibitors

  • Bioorg Med Chem. 2021 Oct 15;48:116418. doi: 10.1016/j.bmc.2021.116418.
Mara Ibeth Campos-Almazán 1,  Miguel Flores-Ramos 2,  Alicia Hernández-Campos 3,  Rafael Castillo 3,  Erick Sierra-Campos 4,  Kristiane Torgeson 5,  Wolfgang Peti 5,  Mónica Valdez-Solana 4,  Jesús Oria-Hernández 6,  Sara T Méndez 6,  Adriana Castillo-Villanueva 6,  Hugo Jiménez-de Jesús 3,  Claudia Avitia-Domínguez 7,  Alfredo Téllez-Valencia 8
Affiliations

Affiliations

  • 1 Facultad de Medicina y Nutrición, Universidad Juárez del Estado de Durango, Avenida Universidad y Fanny Anitúa S/N, Durango 34000, Mexico.
  • 2 Escuela Nacional de Estudios Superiores, Unidad Mérida, Universidad Nacional Autónoma de México, Carretera Mérida-Tetiz, Km 4, Ucú, Yucatán 97357, Mexico.
  • 3 Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, Ciudad de México C.P. 04510, Mexico.
  • 4 Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango Campus Gómez Palacio, Avenida Artículo 123 S/N, Fracc, Filadelfia, Gómez Palacio 35010, Mexico.
  • 5 Department of Molecular Biology and Biophysics, University of Connecticut Health Center, 263 Farmington Avenue, Farmington, CT 06030, USA.
  • 6 Laboratorio de Bioquímica-Genética, Instituto Nacional de Pediatría, Secretaría de Salud, Ciudad de México 04530, Mexico.
  • 7 Facultad de Medicina y Nutrición, Universidad Juárez del Estado de Durango, Avenida Universidad y Fanny Anitúa S/N, Durango 34000, Mexico. Electronic address: claudia.avitia@ujed.mx.
  • 8 Facultad de Medicina y Nutrición, Universidad Juárez del Estado de Durango, Avenida Universidad y Fanny Anitúa S/N, Durango 34000, Mexico. Electronic address: atellez@ujed.mx.
PMID: 34563877 DOI: 10.1016/j.bmc.2021.116418
Abstract

Protein-tyrosine Phosphatase 1B (PTP1B) is a negative regulator of Insulin signaling pathway and has been validated as a therapeutic target for type 2 diabetes. A wide variety of scaffolds have been included in the structure of PTP1B inhibitors, one of them is the benzimidazole nucleus. Here, we report the design and synthesis of a new series of di- and tri- substituted benzimidazole derivatives including their kinetic and structural characterization as PTP1B inhibitors and hypoglycemic activity. Results show that compounds 43, 44, 45, and 46 are complete mixed type inhibitors with a Ki of 12.6 μM for the most potent (46). SAR type analysis indicates that a chloro substituent at position 6(5), a β-naphthyloxy at position 5(6), and a p-benzoic acid attached to the linker 2-thioacetamido at position 2 of the benzimidazole nucleus, was the best combination for PTP1B inhibition and hypoglycemic activity. In addition, molecular dynamics studies suggest that these compounds could be potential selective inhibitors from other PTPs such as its closest homologous TCPTP, SHP-1, SHP-2 and CDC25B. Therefore, the compounds reported here are good hits that provide structural, kinetic, and biological information that can be used to develop novel and selective PTP1B inhibitors based on benzimidazole scaffold.

Keywords

Benzimidazole derivatives; Enzyme inhibition; Hypoglycemic effect; Molecular dynamics; PTP1B; Type 2 diabetes.

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