Carnosol is an Nrf2 activator, increasing Nrf2 levels and promoting heme oxygenase 1 (HMOX1) expression. It is a ribosomal S6 kinase (RSK2) inhibitor and can be used in gastric cancer-related research with an IC50 value of approximately 5.5 μM.
Methyl rosmarinate is a noncompetitive tyrosinase inhibitor isolated from Rabdosia serra, with an IC50 of 0.28 mM for mushroom tyrosinase. It exhibits antioxidative and antifungal activities, and also inhibits tyrosinase, α±-glucosidase, and matrix metalloproteinase-1 (MMP-1).
7-Methoxyrosmanol (7-O-Methylrosmanol) can effectively suppress FSK-induced luciferase expression under the control of the CRE, PEPCK-C and G6Pase gene promoters, it may contribute to its antihyperglycemic activity.