Benzylpiperazine derivatives. X. Syntheses and structure-antiulcer activity relationship of 1-benzyl-4-piperazineacetic acid esters.
作者:HIROSHI OHTAKA、KENJI YOSHIDA、KENJI SUZUKI、KOICHI SHIMOHARA、SHIGERU TAJIMA、KEIZO ITO
DOI:10.1248/cpb.36.4825
日期:——
A series of ester derivatives of1-benzy1-4-piperazineacetic acid was synthesized and evaluated as antiulcer agents. Quantitative structure-activity relationships (QSAR) analyses by using the ALS (adaptive least-squares) method were performed in each step to decrease the synthetic efforts. The QSAR for the esters is much the same as that for the previously examined amide derivatives. The antiulcer activity of these compounds was considered to be based on the cytoprotective activity. The most active and the least toxic compounds, 5n and 5y, were selected for further study.
作者:Yasir Nazir、Aamer Saeed、Muhammad Rafiq、Samina Afzal、Anser Ali、Muhammad Latif、Johannes Zuegg、Waleed M. Hussein、Christian Fercher、Ross T. Barnard、Matthew A. Cooper、Mark A.T. Blaskovich、Zaman Ashraf、Zyta M. Ziora
DOI:10.1016/j.bmcl.2019.126722
日期:2020.1
enzymatic reaction with Ki values of 11 µM and 130 µM respectively. In silico docking studies with mushroom tyrosinase (PDB ID 2Y9X) predicted possible binding modes in the catalytic site for these active compounds. The phenolic para-hydroxy group of the most active compound 6c is predicted to interact with the catalytic site Cu++ ion. The methoxy part of this compound is predicted to form a hydrogen bond