Ultrasound accelerated solvent-free condensation reaction of rhodanines and carbonyls using Amberlyst 26 as a green and efficient base catalyst
作者:Duc-Thuan Nguyen、Ngoc-Khoi Pham、Xuan-Triet Nguyen、Thi Xuan Thi Luu、Quynh-Nhi Nguyen Luong
DOI:10.1080/17415993.2023.2173008
日期:——
The solvent-free condensation reaction of various aliphatic aldehydes, cycloalkanones, and benzaldehydes with rhodanines catalyzed by Amberlyst 26 has been reported. The catalyst's efficiency, simple work-up, simple recycling procedure, and high catalyst recyclability without any considerable change of yields several times were found to be interesting. Furthermore, the drastic acceleration of ultrasound
A series of 5-benzylidenerhodanine-3-acetamides bearing morpholino-, 4-arylpiperazinyl-, or 4-benzylpiperidinyl-moieties were synthesized and their inhibitory activities against acetylcholinesterase (AChE) were evaluated. Alteration of amide part and substitution on the benzylidene moiety resulted in change of anti-AChE activity. The most active compound was the 1-benzylpiperidinyl derivative containing 4-(dimethylamino) benzylidene scaffold. Notably, the intermediate compounds, namely 5-arylidene-rhodanine-3-acetic acids (3), showed mild inhibitory activity against 15-lipoxygenase (15-LOX), while the final compound 4 showed no activity against 15-LOX.
Antimicrobial activity of rhodanine-3-acetic acid derivatives
acid)-based amides, esters and 5-arylalkylidene derivatives were synthesized, characterized and evaluated as potential antimicrobial agents against a panel of bacteria, mycobacteria and fungi. All of the derivatives were active against mycobacteria. N-(4-Chlorophenyl)-2-[5-(2-hydroxybenzylidene)-4-oxo-2-thioxothiazolidin-3-yl]acetamide demonstrated the highest activity against Mycobacterium tuberculosis