Efficient One Pot Synthesis of Xanthene-Triazole-Quinoline/Phenyl Conjugates and Evaluation of their Antimicrobial Activity
摘要:
Novel xanthene-triazole-quinoline/phenyl conjugates were synthesized by eco-friendly one pot three-component condensation of 12-aryl-2-hydroxy-tetrahydrobenzo[a]xanthene-11-one, propargyl bromide and 4-azido-7-chloroquinoline/phenyl azide using polyethylene glycol (PEG-400) as a reaction medium with an aim to explore their effect on the in vitro growth of microorganisms causing microbial infection. All newly synthesized xanthene-triazole-quinoline/ phenyl conjugates were fully characterized and were evaluated for in vitro antibacterial and antifungal activity. Antimicrobial activity was evaluated against nine microbial strains. All compounds showed good Gram positive antibacterial and antifungal activity. One of the compounds showed best antibacterial and antifungal activity. Further, binding mode of this compound at the active site of enzyme topoisomerase II DNA gyrase B has also been investigated.
摘要通过一种方便,环境友好的方法合成了12-芳基8,9,10,12-四氢苯并[a] x吨-11-酮衍生物,该过程涉及取代的芳族醛与2,7-二羟基萘/ 2-萘的多组分缩合反应。任务特定的酸性离子液体[NMP] H 2 PO 4在80°C下的/ 2,6-二羟基萘和环状1,3-二羰基化合物。已经证明该方案在高产率,操作简单,易于后处理,反应介质/催化剂的可回收性以及较短的反应时间方面是有效的。
An efficient and convenient approach for the synthesis of novel 2-hydroxy-12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-ones using p-toluenesulfonic acid in ethanol and ionic liquid
作者:Jitender M. Khurana、Bhaskara Nand、Sneha
DOI:10.1002/jhet.661
日期:2011.11
A novel series of 2‐hydroxy‐12‐aryl‐8,9,10,12‐tetrahydrobenzo[a]xanthene‐11‐ones were synthesized by the one‐pot multicomponent condensation of 2,7‐dihydroxynaphthalene, aromatic aldehydes, and cyclic 1,3‐dicarbonyl compounds in the presence of a catalytic amount of p‐toluenesulfonic acid in ethanol and in ionicliquid butyl methyl imidazolium tetrafluroborate ([bmim]BF4). The newly developed protocol
通过2,7-二羟基萘,芳族醛和环的单锅多组分缩合反应合成了一系列新颖的2-羟基-12-芳基-8,9,10,12-四氢苯并[ a ]吨蒽-11-酮1,3-二羰基化合物,在乙醇和离子液体四氟硼酸咪唑鎓丁基甲基磺酸盐([bmim] BF 4)中催化量的对甲苯磺酸存在下。新开发的方案操作简便,适用范围广,并且易于后处理,从而以高纯度提供了高纯度的多种取代的标题化合物。J.杂环化学。(2011)。