Synthesis and Anti-HCV Activity of 4-Hydroxyamino α-Pyranone Carboxamide Analogues
摘要:
High genetic variability in hepatitis C virus (HCV), emergence of drug resistant viruses and side effects demand the requirement for development of new scaffolds to show an alternate mechanism. Herein, we report discovery of new scaffold I based on 4-hydroxyamino alpha-pyranone carboxamide as promising anti-HCV agents. A comprehensive structure activity relationship (SAR) was explored with several newly synthesized compounds. In all promising compounds (17-19, 21-22, 24-25, and 49) with EC50 ranging 0.15 to 0.40 mu M, the aryl group at C-6 position of alpha-pyranone were unsubstituted. In particular, 25 demonstrated potential anti-HCV activity with EC50 of 0.18 mu M in cell based HCV replicon system with lower cytotoxicity (CC50 > 20 mu M) and provided a new scaffold for anti-HCV drug development. Further investigations, including biochemical characterization, are yet to be performed to elucidate its possible mode of action.
Formamidine-Induced Translocative Rearrangement of 2-Pyrones to 2-Pyridone Analogues with a 1,5-Diketo Motif
作者:Ashoke Sharon、Rajan Kumar
DOI:10.1055/a-2017-4176
日期:——
A new formamidine-induced translocative rearrangement of 2-pyrone analogues into 2-pyridone derivatives with a 1,5-diketo motif was identified. All the products were characterized by spectroscopic analysis. In addition, single-crystal X-ray structural studies of two molecules were performed.
鉴定了一种新的甲脒诱导的 2-吡喃酮类似物易位重排为具有 1,5-二酮基序的 2-吡啶酮衍生物。所有产物均通过光谱分析表征。此外,还进行了两个分子的单晶 X 射线结构研究。