An I2/DTBP-promoted (3+2) cycloaddition reaction of 2-aminopyridines and chromones is reported. The work provides a simple and efficient approach to access imidazopyridines scaffold in moderate to good yields. I2/DTBP as an initiator and oxidant was used to realize the tandem (3+2) cycloaddition/oxidative aromatization. Available starting materials, excellent functional-group tolerance, potential drug
Novel N-(4-oxochroman-8-yl)amide derivatives 1 were synthesized and tested for their ability to inhibit rabbit small intestinal ACAT (acyl-CoA:cholesterol acyltransferase) in vitro and to lower serum total cholesterol in cholesterol-fed rats in vivo. Among the synthesized compounds, N-(7-alkoxy-4-oxochroman-8-yl)amide derivatives showed potent ACAT inhibitory activity both in vitro and in vivo. The