14α-ketal 2 showed the best activity for in vivo anti-angiogenesis in zebrafish while 14α-acetals 4, 5 and 6 had greater in vitro anti-angiogenic activity with HUVECs than the other compounds and 1. The results suggested that methylene acetals 4, 5 and 6 were possibly hydrolyzed into 3 or 1 in zebrafish and that 14α-ketal 2 probably did not fully act as a pro-drug of 3 or 1 in zebrafish, instead exerting
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
Andrographolide Derivatives Target the KEAP1/NRF2 Axis and Possess Potent Anti‐SARS‐CoV‐2 Activity
作者:Bianca Schulte、Maria König、Beate I. Escher、Sophie Wittenburg、Matic Proj、Valentina Wolf、Carina Lemke、Gregor Schnakenburg、Izidor Sosič、Hendrik Streeck、Christa E. Müller、Michael Gütschow、Christian Steinebach
DOI:10.1002/cmdc.202100732
日期:2022.3.4
Synthetic andrographolide derivatives were synthesized and found to be potent activators of the KEAP1/NRF2 pathway and inhibitors of SARS-CoV-2 replication. Our Medicinal Chemistry efforts yielded highly selective NRF2 activators that are also accessible for the synthesis of tailored semisynthetic drugs or functional molecules.