7-O-Methylaloeresin A is 5-methylchromone glycoside isolated from Commiphora socotrana (Burseraceae)[1]. 7-O-Methylaloeresin A exhibits good activity against multiple drug resistant Staphylococcus aureus (NCTC 11994) and Salmonella typhimurium (ATCC 1255) with MIC values of 0.72 and 0.18 mM, respectively[2].7-O-Methylaloeresin A has antioxidant activities, gives IC50 values of 0.026 mM and 0.021 mM for DPPH and 2-deoxyribose degradation assay, respectively[2].
[1]. Blitzke T, et al. 7-O-methylaloeresin A--a new chromone glycoside from Commiphora socotrana. Nat Prod Lett. 2001;15(1):27-33. [2]. Asamenew G, et al. In vitro antimicrobial and antioxidant activities of anthrone and chromone from the latex of Aloe harlana Reynolds. Phytother Res. 2011 Dec;25(12):1756-60.