Broad‐Spectrum Antifungal Agents: Fluorinated Aryl‐ and Heteroaryl‐Substituted Hydrazones
作者:Nishad Thamban Chandrika、Emily K. Dennis、Katelyn R. Brubaker、Stefan Kwiatkowski、David S. Watt、Sylvie Garneau‐Tsodikova
DOI:10.1002/cmdc.202000626
日期:2021.1.8
Fluorinated aryl‐ and heteroaryl‐substituted monohydrazones displayed excellent broad‐spectrum activity against various fungal strains, including a panel of clinically relevant Candida auris strains relative to a control antifungal agent, voriconazole (VRC). These monohydrazones displayed less hemolysis of murine red blood cells than that of VRC at the same concentrations, possessed fungicidal activity
氟化芳基和杂芳基取代的单腙对各种真菌菌株表现出优异的广谱活性,包括相对于对照抗真菌剂伏立康唑 (VRC) 的一组临床相关耳念珠菌菌株。在相同浓度下,这些一腙对小鼠红细胞的溶血作用比 VRC 少,在时间杀灭研究中具有杀菌活性,并且没有表现出哺乳动物细胞的细胞毒性。此外,这些一腙可以防止生物膜的形成,否则会阻碍抗生素的有效性,并且当暴露于耳念珠菌AR Bank # 0390 15 代以上时,不会引发耐药性的发展。
Fe-Catalyzed One-Pot Synthesis of 1,3-Di- and 1,3,5-Trisubstituted Pyrazoles from Hydrazones and Vicinal Diols
作者:Niranjan Panda、Ashis Kumar Jena
DOI:10.1021/jo301770k
日期:2012.10.19
An iron-catalyzed route for the regioselectivesynthesis of 1,3- and 1,3,5-substituted pyrazolesfrom the reaction of diarylhydrazones and vicinal diols has been developed. This method was found to be practical with wide substrate scope.
A one-pot, three-component coupling of aldehydes with hydrazines and 1-aryl-1-alkenyl sulfones or 2-aryl-1-alkenyl sulfones for the regioselective synthesis of 1,3,4- and 1,3,5-triarylpyrazoles was developed. In our developed procedure, 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) worked as an effective oxidant, and the addition of an strong acid was not necessary. We synthesized 1,3,4- and 1,3,5-triarylpyrazoles
Ce-catalyzed regioselective synthesis of pyrazoles from 1,2-diols <i>via</i> tandem oxidation and C–C/C–N bond formation
作者:Chandan Kumar Pal、Ashis Kumar Jena
DOI:10.1039/d2ob01996e
日期:——
novel and efficient cerium-catalyzed tandem oxidation and intermolecular ring cyclization of vicinal diols with hydrazones has been achieved for the regioselective synthesis of pyrazolederivatives. The corresponding 1,3-di- and 1,3,5-trisubstituted pyrazoles were obtained in moderate to excellent yields. The reaction has the advantages of mild conditions, easily available starting materials, broad substrate
Cascade synthesis of substituted 4-amino-1,2,4-triazol-3-ones from aldehyde hydrazones and azodicarboxylates
作者:Yehua Su、Zhen Jiang、Deng Hong、Ping Lu、Yanguang Wang、Xianfu Lin
DOI:10.1016/j.tet.2010.01.087
日期:2010.3
Substituted 4-amino-1,2,4-triazol-3-ones were synthesized from aldehyde hydrazones and azodicarboxylates in the presence of triphenylphosphine. The cascade reaction was conducted in a single step and the procedure is general and efficient. (C) 2010 Elsevier Ltd. All rights reserved.