Novel carbazole-thiadiazole derivatives as α-amylase and α-glucosidase inhibitors: Design, biological evaluation, and computational insights


ÇAPAN İ., Hawash M., Qaoud M. T., Jaradat N.

BIOORGANIC CHEMISTRY, cilt.157, 2025 (SCI-Expanded, Scopus) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 157
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.bioorg.2025.108243
  • Dergi Adı: BIOORGANIC CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Chimica, EMBASE, Veterinary Science Database, Index Chemicus (IC)
  • Anahtar Kelimeler: Carbazole-thiadiazole hybrids, Dual enzyme inhibition, Molecular docking, Pharmacokinetics, α-Amylase, α-Glucosidase
  • Gazi Üniversitesi Adresli: Evet

Özet

Diabetes mellitus remains a global health challenge, demanding innovative therapeutic solutions. Herein, we present the design, synthesis, and pharmacological evaluation of a novel series of carbazole-thiadiazole hybrids targeting key enzymes in carbohydrate metabolism. Among the synthesized compounds, 5l emerged as the most potent inhibitor of alpha-amylase, with an IC50 value of 0.68 mu M-far surpassing the efficacy of the standard drug acarbose (IC50: 5.19 mu M). Similarly, 5r exhibited exceptional dual activity against both alpha-amylase and alpha-glucosidase, with IC50 values of 1.63 mu M and 0.14 mu M, respectively, highlighting its dual inhibitory potential. Biological assays demonstrated the compounds' low cytotoxicity on hepatic stellate (LX-2) cells, affirming their safety for therapeutic use. Molecular docking studies provided mechanistic insights into their binding interactions, revealing strong hydrogen bonding and hydrophobic interactions with key active site residues. Density functional theory (DFT) and electrostatic potential (ESP) analyses further elucidated their electronic properties, offering a deeper understanding of their structure-activity relationships. Pharmacokinetic profiling via the BOILED-Egg model confirmed these derivatives' excellent oral bioavailability and drug-likeness. Collectively, these findings establish carbazole-thiadiazole hybrids as promising candidates for next-generation antidiabetic therapies, warranting further investigation in preclinical and clinical settings.