1-Methyl-2-undecyl-4(1H)-quinolone, and dihydroevocarpine should also be served as the chemical markers together with evodiamine for the quality control of Evodia rutaecarpa (Juss.) Benth. 1-Methyl-2-undecyl-4(1H)-quinolone shows a selective inhibition of type B MAO (MAO-B) activity with the IC(50) value of 15.3 microM using a substrate kynuramine, but does not inhibit type A MAO (MAO-A) activity.It can mitigate high phosphate-induced human aortic valve interstitial cells (HAVICs) calcification by inhibiting phosphate cotransporter (PiT-1) gene expression. It also shows moderate antiangiogenic activity against human tumor cells.
Eckol inhibits ultraviolet B-induced cell damage by a decrease in oxidative stress in human keratinocytes.This compound is unstable in powder form and other related salt forms are recommended.
Methyl citrate, obtained from Opuntia ficus-indica var. saboten Makino fruits, serves as a potent Monoamine oxidase B (MAO-B) inhibitor with an IC50 value of 0.23 mM.