1449003-28-4Relevant articles and documents
Discovery and preliminary SAR of 14-aryloxy-andrographolide derivatives as antibacterial agents with immunosuppressant activity
Li, Feng,Li, Xiao-Min,Sheng, Dekuan,Chen, Shao-Ru,Nie, Xin,Liu, Zhuyun,Wang, Decai,Zhao, Qi,Wang, Yitao,Wang, Ying,Zhou, Guo-Chun
, p. 9440 - 9456 (2018)
Antibacterials (which restore gut flora balance) and immunosuppressants (which correct immune defects) are two important and effective therapeutic agents for the treatment of inflammatory bowel disease (IBD) in clinical use today. Since the structural skeleton of andrographolide, isolated from Andrographis paniculata, has become known as a natural antibiotic with anti-inflammation and heat-clearing and detoxifying properties, 14-aryloxy andrographolide derivatives have been designed, synthesized, and tested for their antibacterial effects on E. coli, S. aureus, and E. faecalis, which are related to IBD. It has been discovered in this study that the andrographolide skeleton is more selective against E. faecalis, the 14-aryloxy group with basicity is important for antibacterial functions, and the 14-(8′-quinolinyloxy) group is a good pharmacophore with antibacterial activity. In addition, we found that 7b1 and 8b1 are good and selective inhibitors of E. faecalis; two 14β-(8′-quinolinyloxy) andrographolide derivatives, 6b17 and 9b, exhibit good activity against E. coli, S. aureus, and E. faecalis. Likewise and importantly, further exploration of immunosuppressant activity for IBD shows that compound 7b1 is a selective inhibitor of the TNF-α/NF-κB signaling pathway, whereas 8b1 is selectively active against the TLR4/NF-κB signaling pathway; moreover, the compounds 6b17 and 9b are active in inhibiting the IL-6/STAT3, TLR4/NF-κB, and TNF-α/NF-κB signaling pathways. Based on these results, we have further focused on the development of dual function inhibitors of IBD as antibacterial and immunosuppressant agents by structural modification of andrographolide.
Synthesis and discovery of andrographolide derivatives as non-steroidal farnesoid X receptor (FXR) antagonists
Liu, Zhuyun,Law, Wai-Kit,Wang, Decai,Nie, Xin,Sheng, Dekuan,Song, Genrui,Guo, Kai,Wei, Ping,Ouyang, Pingkai,Wong, Chi-Wai,Zhou, Guo-Chun
, p. 13533 - 13545 (2014/04/03)
Based upon the discovery of the natural compound andrographolide (1) as a non-steroidal farnesoid X receptor (FXR) antagonist, a series of andrographolide derivatives were designed and synthesized accordingly. Our primary SAR studies demonstrated that 14-phenoxy andrographolide scaffold is an excellent structural pharmacophore for FXR antagonists. Remarkably, 14β-compounds of 12b, 12f and 10g were found to be the most potent FXR antagonists in this work. Structural docking discovered that the phenoxy substitution at the 14-position and the modification at 3,19-positions altered the putative binding positions of small FXR ligands, resulting in their FXR antagonistic activity discrepancy. This journal is the Partner Organisations 2014.
