Discovery of bi-4-methoxycarbonyl-2-quinolone and evaluation of its anti-inflammatory and anti-cancer activity in vitro .

A novel alkaloid with a hexa-tetra-hexa-cyclic skeleton, Bi-4-methoxycarbonyl-2-quinolone ( 1 ), was discovered during the investigation of Brucea javanica . Additionally, six known alkaloids ( 2 - 7 ) were also found. The chemical structures of these compounds were identified using HRESIMS and 1D and 2D NMR spectroscopic analysis. Additionally, the absolute configuration of the new compound 1 was determined through X-ray single crystal diffraction. Compound 1 exhibited significant anti-inflammatory activity in RAW264.7 cells and demonstrated promising anti-cancer effects in Lewis cells.