Synthesis, spectral characterization and in vitro antimicrobial activity of some new azopyridine derivatives
作者:Hanaa Abuo-Melha、A.A. Fadda
DOI:10.1016/j.saa.2011.12.054
日期:2012.4
A series of arylpicolino and/or isonicotinohydrazonyl cyanide 2a-d and 4a-f were prepared by coupling the approprite aryl diazonium salt with 2-cyanomethyl and/or 4-cyanomethyl-pyridine, respectively. These compounds were characterized by analytical and spectral analyses and screened for their antibacterial activity against Gram-positive bacteria, Gram-negative bacteria and antifungal activity. Among the synthesized compounds, N'-(4-phenyldiazenyl)phenylisonicotinohydrazonyl cyanide 4f showed a significant activity toward both Gram-positive. Gram-negative bacteria and exhibit the most potent in vitro antifungal with MIC's (625 mu g/mL) against Aspergillus nieger. (C) 2011 Elsevier B.V. All rights reserved.
Reversible regulating of crystal structures based on isomerization of phenylhydrazones
作者:Lulu Ma、Zexing Yuan、Zhenguo Huang、Jingyi Jin、Duxia Cao、Ruifang Guan、Qifeng Chen、Xuan Sun
DOI:10.1039/c7cc06374a
日期:——
Reversible crystal transformation for phenylhydrazones 1 between the orthorhombic microporous 1-E crystal and monoclinic herringbone 1-Z crystal induced by light and heating has been demonstrated. Other than the inherent single-molecular photoreactivity, the weak intermolecular interactions and loose stacking of porous 1-E crystal favor the efficient solid-state photoisomerization.