5-O-Coumaroylquinic acid (3-O-Coumaroylquinic acid), exhibits significant inhibition of PTP1B and a concentration-dependent inhibitory effect on α-glucosidase, thereby demonstrating anti-hyperglycemic properties. Additionally, this compound enhances glucose uptake and inhibits PTP1B in vitro, emphasizing its potential therapeutic applications in glucose regulation.
5-Hydroxyferulic acid is an important hydroxycinnamic acid compound and a metabolite in the phenylpropanoid pathway. It acts as a precursor for the biosynthesis of sinapic acid and functions as a non-esterified substrate for COMT.