Discovery of conjugated thiazolidinone-thiadiazole scaffold as anti-dengue virus polymerase inhibitors

MANVAR D., KÜÇÜKGÜZEL İ., ERENSOY G., TATAR E., DERYABAŞOĞULLARI G., REDDY H., ...Daha Fazla

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, cilt.469, sa.3, ss.743-747, 2016 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 469 Sayı: 3
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.bbrc.2015.12.042
  • Dergi Adı: BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.743-747
  • Anahtar Kelimeler: Dengue virus, NS5 polymerase, RNA dependent RNA polymerase, 4-Thiazolidinones, Fluorescence quenching, 1,3,4-Thiadiazoles, RNA-SYNTHESIS, ADENOSINE NUCLEOSIDE, MYCOPHENOLIC-ACID, IN-VITRO, REPLICATION, INFECTION, ENTRY
  • Marmara Üniversitesi Adresli: Evet

Özet

Dengue virus (DENV) infection is a significant health threat to the global population with no therapeutic option. DENV NS5 RNA-dependent RNA polymerase (RdRp) is the key replicating protein of the virus and thus an attractive target for drug development. Herein, we report on the synthesis and biological evaluation of a series of hybrid thiazolidinone-thiadiazole derivatives as a new class of DENV-2 NS5 RdRp inhibitors. This yielded compounds 12 and 21 with IC50 values of 2.3 mu M and 2.1 mu M, respectively, as promising leads. Limited SAR analysis indicated 3-fluorobenzylidene as the optimal substituent at C5-position of the thiazolidinone core, whereas both 2-chiorophenyl and 3-fluorophenyl substituents were equally effective at C5-position of the 1,3,4-thiadiazole core. Biophysical characterization and molecular docking studies conferred the binding site of this scaffold on DENV NS5 polymerase. Binding mode of compound 21 in Thumb pocket-II of DENV-2 NS5 polymerase will form the basis for future structure-activity relationship optimization. Published by Elsevier Inc.