698-16-8Relevant articles and documents
Highly regioselective dipolar cycloadditions of nitrile oxides with α,β-acetylenic aldehydes
Jiang, Longqiang,Gao, Tao,Li, Zhi,Sun, Shaofa,Kim, Claudia,Huang, Changfeng,Guo, Haibing,Wang, Jian,Xing, Yalan
, p. 712 - 714 (2016)
1,2-Oxazol derivatives 3 were prepared by a highly regioselective 1,3-dipolar cycloaddition of nitrile oxides and α,β-acetylenicaldehydes 1 in good yields. Reactive nitrile oxides were generated in situ from stable chloro-oxime reagents 2 and triethyl ami
Ru-Catalyzed [3 + 2] Cycloaddition of Nitrile Oxides and Electron-Rich Alkynes with Reversed Regioselectivity
Feng, Qiang,Huang, Hai,Sun, Jianwei
supporting information, p. 2431 - 2436 (2021/05/05)
Polarity reversal ("umpolung") of a functional group can override its inherent reactivity and lead to distinct bond-forming modes. Herein we describe a rarely studied cycloaddition between nitrile oxides and electron-rich alkynes with reversed regioselect
Synthesis and biological evaluation of novel isoxazole derivatives from acridone
Aarjane, Mohammed,Slassi, Siham,Tazi, Bouchra,Amine, Amina
, (2020/12/07)
The present study was carried out in an?attempt to synthesize a new class of potential antibacterial agents. In this context, novel isoxazoles were synthesized and evaluated for their potential antibacterial behavior against four pathogenic bacterial strains. The synthesized compounds exhibited moderate-to-good antibacterial activity against these strains. The highest antibacterial activity was observed against the Escherichia coli strains, particularly for compounds 4a and 4e with phenyl and para-nitrophenyl groups on the isoxazole–acridone skeleton;?they showed promising minimum inhibitory concentration values of 16.88 and 19.01 μg/ml, respectively, compared with the standard drug chloramphenicol (22.41 μg/ml). The synthesized compounds were subjected to in silico docking studies to understand the mode of their interactions with the DNA topoisomerase complex (PDB ID: 3FV5) of E. coli. The molecular docking results showed that compounds 4a–l occupy the active site of DNA topoisomerase (PDB ID: 3FV5), stabilized via hydrogen bonding and hydrophobic interactions, which may be the reason behind their interesting in vitro antibacterial activity.