Journal
ARCHIVES OF PHARMACAL RESEARCH
Volume 28, Issue 5, Pages 541-545Publisher
PHARMACEUTICAL SOC KOREA
DOI: 10.1007/BF02977755
Keywords
Erigeron annuus L.; compositae; hACAT1 inhibitory effect; Lp-PLA(2) inhibitory effect; ergosterol peroxide
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Flowers of Erigeron annuus L. were extracted with 80% aqueous MeOH, and the concentrated extract was partitioned with EtOAc, n-BuOH, and H2O. Repeated silica gel and ODS column chromatography of the EtOAc fraction led to the isolation of a sterol, through activity-guided fractionation, using ACAT inhibitory activity measurements. From the physico-chemical data, including NMR, MS, and IR, the chemical structure of the compound was determined to be an ergosterol peroxide (1), which has been isolated for the first time from this plant. This compound exhibited hACAT-1 and Lp-PLA(2) inhibitory effects, with inhibitory values of 51.6 +/- 0.9 and 51.7 +/- 1.2%, at a treatment concentration of 0.23 mM.
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