341529-34-8Relevant articles and documents
N-Acylbenzotriazole: convenient approach for protecting group-free monoacylation of symmetric diamines
Agha, Khalid A.,Abo-Dya, Nader E.,Ibrahim, Tarek S.,Abdel-Aal, Eatedal H.,Abdel-Samii, Zakaria K.
, p. 589 - 598 (2020/05/06)
Abstract: An efficient green route for monoacylation of aromatic diamines, namely o-phenylenediamine and p-phenylenediamine and aliphatic diamines ethylenediamine and piperazine using N-acylbenzotriazoles (NABs) in n-butanol was developed. The new protocol does not require prior selective protection of the diamine and comprises simple conditions, short reaction times, an easy work up as well as high isolated yields (69–94%). Moreover, the method described herein enable stepwise acylation of aliphatic diamines such as ethylenediamine and piperazine with two different N-acylbenzotriazoles affording unsymmetrical substituted diamines that can be used for construction of pharmaceutically important targets such as drugs, foldamers, and drug conjugates. Graphic abstract: [Figure not available: see fulltext.]
Design, synthesis, and biological evaluation of matrine derivatives possessing piperazine moiety as antitumor agents
Xu, Yiming,Liang, Pengyun,Rashid, Haroon ur,Wu, Lichuan,Xie, Peng,Wang, Haodong,Zhang, Shuyan,Wang, Lisheng,Jiang, Jun
, p. 1618 - 1627 (2019/07/29)
Using matrine (1) as the lead compound, a series of new piperazinyl matrine derivatives were designed, synthesized and evaluated for their antitumor activities in vitro and in vivo. Structure activity relationship (SAR) analysis indicated that introductio
Synthesis, characterization, and anti-inflammatory activities of methyl salicylate derivatives bearing piperazine moiety
Li, Jingfen,Yin, Yong,Wang, Lisheng,Liang, Pengyun,Li, Menghua,Liu, Xu,Wu, Lichuan,Yang, Hua
, (2016/12/02)
In this study, a new series of 16 methyl salicylate derivatives bearing a piperazine moiety were synthesized and characterized. The in vivo anti-inflammatory activities of target compounds were investigated against xylol-induced ear edema and carrageenan-induced paw edema in mice. The results showed that all synthesized compounds exhibited potent anti-inflammatory activities. Especially, the anti-inflammatory activities of compounds M15 and M16 were higher than that of aspirin and even equal to that of indomethacin at the same dose. In addition, the in vitro cytotoxicity activities and anti-inflammatory activities of four target compounds were performed in RAW264.7 macrophages, and compound M16 was found to significantly inhibit the release of lipopolysaccharide (LPS)-induced interleukin (IL)-6 and tumor necrosis factor (TNF)-α in a dose-dependent manner. In addition, compound M16 was found to attenuate LPS induced cyclooxygenase (COX)-2 up-regulation. The current preliminary study may provide information for the development of new and safe anti-inflammatory agents.