一系列取代的2-芳基咪唑并[1,2-α]吡啶已被制备,其中多种取代基被引入在苯环的4'位和在3,5的,6或7位杂环。大多数实例在4'-位具有乙酰氨基,溴,氰基或甲酰基取代基。还已经制备了类似的咪唑并[ 2,1- b ]噻唑和咪唑并[1,2- a ]嘧啶。制备了由咪唑的4'-甲酰基苯氧基甲基衍生物,吡啶,噻唑,苯并咪唑和环取代的咪唑并[1,2- a ]吡啶的三个位置异构体组成的另一系列化合物。还制备了咪唑和咪唑并[1,2- a ]吡啶的2-(4'-甲酰基苯基乙烯基)衍生物。
Compounds exhibiting anti-parasitic activity and a method for their use
申请人:The United States of America as represented by the Secretary of the Army
公开号:US05204352A1
公开(公告)日:1993-04-20
Novel compounds are provided which exhibit high levels of anti-parasitic activity, specifically against parasites of the genus Trypanosoma. The compounds are comprised of aryl-substituted quaternary heteroaromatic salts which include a positively charged imidazolium or other heterocyclic ring, a linking group, a phenyl ring, and a polar functional group. The polar functional group is preferably a quanylhydrazone or a heterocyclic hydrazone. A method is also provided for treating the diseases associated with Trypanosoma parasites which comprises administering to infected animals or humans an effective amount of a compound of the present invention.
Microwave-assisted green synthesis and photophysical properties of bis-heterocyclic fluorophores
作者:Preeti Ashokkumar Chaudhran、Abha Sharma
DOI:10.1016/j.jphotochem.2023.115167
日期:2024.1
approach for the synthesis of benzimidazole linked with imidazopyridine through a greener and highly efficient method is proposed herein. The approach involves the use of green, safe, and easy-to-use solvents: EtOH & H2O, which overthrows the already reported procedures using catalysts (Cu, Au, Zr, etc) and oxidizing agents. The efficiency of method was evaluated based on synthesis of derivatives (6a-h)
本文提出了一种通过更绿色、高效的方法合成咪唑并吡啶连接的苯并咪唑的方法。该方法涉及使用绿色、安全且易于使用的溶剂:EtOH & H 2 O,它推翻了已经报道的使用催化剂(Cu、Au、Zr等)和氧化剂的程序。基于含有多种取代基的衍生物( 6a-h )的合成来评估该方法的效率。研究了合成化合物在不同溶剂、水介质和不同酸中的荧光特性。图6a显示了中性至碱性条件下增强的荧光并通过1D和2D NMR光谱表征。6a可以作为 pH 敏感探针用于诊断碱性条件。
SUNDBERG, RICHARD J.;DAHLHAUSEN, D. J.;MANIKUMAR, G.;MAVUNKEL, B.;BISWAS,+, J. HETEROCYCL. CHEM., 25,(1988) N 1, 129-137
作者:SUNDBERG, RICHARD J.、DAHLHAUSEN, D. J.、MANIKUMAR, G.、MAVUNKEL, B.、BISWAS,+