The Fragment-Based Development of a Benzofuran Hit as a New Class of Escherichia coli DsbA Inhibitors
作者:Luke F. Duncan、Geqing Wang、Olga V. Ilyichova、Martin J. Scanlon、Begoña Heras、Belinda M. Abbott
DOI:10.3390/molecules24203756
日期:——
factors in many pathogenic Gram-negative bacteria, and small molecule inhibitors can potentially be developed as anti-virulence compounds. Biophysical screening of a library of fragments identified several classes of fragments with affinity to EcDsbA. One hit with high mM affinity, 2-(6-bromobenzofuran-3-yl)acetic acid (6), was chemically elaborated at several positions around the scaffold. X-ray crystal
Six coumarin-caged compounds of 1-naphthaleneaceticacid (NAA) comprising different substituents on the coumarin moiety were synthesized and evaluated for their photophysical and chemical properties as light-responsive controlled-release plant root stimulators. The 1H NMR and HPLC techniques were used to verify the release of NAA from the caged compounds. After irradiation at 365 nm, the caged compounds
UV-Visible, FTIR and NMRexperimental and theoretical spectral results have been compared for five substituted-4-chloromethylcoumarin derivatives (6-OH, 7-OH, 6,7-di-OH, 7,8-di-OH and 5,7-di-OH-substituted4-chloromethylcoumarins). The theoreticalinvestigation was conducted using density functional theory (DFT), namely the M06-2X functional form with 6-311+G(2df,2p) basis set. The C-NMR and H-NMR chemical
species of Asteraceae, Rutaceae and Umbeliferae families which demonstrate several pharmacological properties, including antioxidant activity. As antioxidants, coumarins are known to influence the formation and uptake of Reactive Oxygen Species (ROS), to reduce the oxidative damage caused by free radicals and to prevent eicosanoid formation, being of interest for drug design. In this context, we designed