Cyclomorusin exhibits competitive inhibition toward monophenolase activity of mushroom tyrosinase, the IC50 value of 0.092 microM. It evokes the stimulation of superoxide anion generation in fMLP-stimulated rat neutrophils. Cyclomorusin , neocyclomorusin
Neorauflavane shows tyrosinase inhibition, it can inhibit tyrosinase monophenolase activity with an IC50 of 30 nM, it also can efficiently reduce melanin content in B16 melanoma cells with 12.95 uM of IC50.