Hybrids of aurantiamide acetate and isopropylated genipin as potential anti‐inflammatory agents: The design, synthesis, and biological evaluation

A novel series of hybrids designed on the basis of aurantiamide acetate and isopropylated genipin were synthesized and biologically evaluated as anti-inflammatory agents. Among them, compound 7o exhibited the best inhibitory activity against TNF-α secretion (IC50 = 16.90 μM), and was selected for further in vitro and in vivo functional study. The results demonstrated that 7o was capable of suppressing the expression of LPS-induced iNOS and COX-2, as well as reducing the production of NO at the concentration of 5 μM, which may be resulted from its regulation of NF-κB signaling and MAPK signaling. Moreover, compound 7o exhibited favourable in vivo anti-inflammatory activity with an inhibition rate of 53.32% against xylene-induced ear swelling in mice at the dose of 5 mg/kg.