Synthesis and Biological Evaluation of Honokiol Derivatives Bearing 3-((5-phenyl-1,3,4-oxadiazol-2-yl)methyl)oxazol-2(3H)-ones as Potential Viral Entry Inhibitors against SARS-CoV-2
作者:Yong Guo、Jie-Ru Meng、Jia-Zheng Liu、Ting Xu、Zhi-Yuan Zheng、Zhi-Hong Jiang、Li-Ping Bai
DOI:10.3390/ph14090885
日期:——
damp-drying effect. To develop new potent antiviral molecules, a series of novel honokiol analogues were synthesized by introducing various 3-((5-phenyl-1,3,4-oxadiazol-2-yl)methyl)oxazol-2(3H)-ones to its molecule. In a SARS-CoV-2 pseudovirus model, all honokiol derivatives were examined for their antiviral entry activities. As a result, 6a and 6p demonstrated antiviral entry effect with IC50 values of 29
the binding of SARS-CoV-2 to the host ACE2 receptor through dual recognition of SARS-CoV-2 spike RBD and human ACE2. Additionally, the potent honokiol thioethers 7l, 9a, and 9r displayed relatively no cytotoxicity to normal cells (LO2). These findings will provide a theoretical basis for the discovery of honokiol derivatives as potential both α-glucosidase and SARS-CoV-2entryinhibitors.
bioisosterism replacement strategies were used to design and synthesize novel tetrahydrophthalimide derivativescontaining oxadiazole/thiadiazole moieties, and their inhibitory effects on Nicotiana tobacco PPO (NtPPO) and herbicidalactivity were evaluated. Among them, compounds B11 (Ki = 9.05 nM) and B20 (Ki = 10.23 nM) showed significantly better inhibitory activity against NtPPO than that against flumiclorac-pentyl
原卟啉原氧化酶(PPO,EC 1.3.3.4)在新型抑制剂的开发中具有很高的地位。为了开发新型高效PPO抑制剂,采用活性子结构连接和生物电子等排取代策略设计合成了新型含恶二唑/噻二唑结构的四氢邻苯二甲酰亚胺衍生物,并评价了其对烟草PPO( Nt PPO)的抑制作用和除草活性。其中,化合物B11 ( K i = 9.05 nM)和B20 ( K i = 10.23 nM)对Nt PPO的抑制活性明显优于对氟氯酸戊酯( K i = 46.02 nM)的抑制活性。同时,化合物A20和B20在37.5 g ai/ha时对三种杂草(苘麻、反枝苋和马齿苋)100%有效。值得观察的是,化合物B11在18.75和9.375 g ai/ha时对三种杂草(苘麻、反枝苋和马齿苋)的有效效果超过90%。对于水稻、玉米和小麦来说,150 g ai/ha 的剂量比氟氯酸戊酯更安全。此外,分子对接结果表明,化合物B11能够稳定地与Nt
A total of 20 new compounds containing the oxadiazolyl 3(2H)-pyridazinone moiety were synthesized. The structures of all the compounds were confirmed by H-1 NMR, IR, MS, and elemental analysis. Their insect antifeedant activities against Asiatic corn borer Ostrinia furnacalis (Guenee) were examined and compared with commercial azadirachtin. The compounds exhibited significant levels of activity. The feeding deterrency values of IIIa,j were 57% and 51% at 500 mg/kg concentration, respectively.