Journal
BIOORGANIC & MEDICINAL CHEMISTRY
Volume 67, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmc.2022.116835
Keywords
Scaffold-hopping; Natural product; (Z)-2-benzylidenebenzo[d]imidazo[2; 1-b]; thiazol-3-one; Anticancer; Topoisomerase; Drug-likeness
Funding
- SERB, New Delhi [CRG/2020/000256, EMR/2015/002379]
- ICMR-BMS [2016-0043/SCR/ADHOC-BMS]
- DST
- DST
- NIPER, Mohali
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A Nature-to-new strategy was employed to investigate analogs of natural aurones, using iterative scaffold-hopping. A method based on organocatalyzed umpolung chemistry was established for the synthesis of (Z)-2-Arylideneimidazo [1,2-a]pyridinones and (Z)-2-Arylidenebenzo[d]imidazo[2,1-b]thiazol-3-ones. Biophysical experiments demonstrated the significant biological properties of these analogs, particularly their anticancer activities.
A strategy of Nature-to-new with iterative scaffold-hopping was considered for investigation of privileged ring/ functional motif-elaborated analogs of natural aurones. An organocatalyzed umpolung chemistry based method was established for molecular-diversity feasible synthesis of title class of chemotypes i.e. (Z)-2-Arylideneimidazo [1,2-a]pyridinones and (Z)-2-Arylidenebenzo[d]imidazo[2,1-b]thiazol-3-ones. Various biophysical experiments indicated their important biological properties. The analogs showed characteristic anticancer activities with efficiency more than an anticancer drug. The compounds induced apoptosis with arrest in the S phase of the cell cycle regulation. The compounds' significant effect in up/down-regulation of various apoptotic proteins, an apoptosis cascade, and the inhibition of topoisomerases-mediated DNA relaxation process was identified. The analysis of the structure-activity relationship, interference with biological events and the drug-likeness physicochemical properties of the compounds in the acceptable window indicated distinctive medicinal molecule-toproperties of the investigated chemotypes.
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