Abstract
The sprouts of Brassica oleracea var. gongylodes were extracted with 100% MeOH and the concentrated extract was partitioned with EtOAc, n-BuOH and , successively. From the EtOAc fraction, three sterols were isolated through the repeated silica gel and ODS column chromatographies. On the basis of physico-chemical and spectroscopic data including NMR, MS, and IR, the chemical structures of the sterols were determined as -sitosterol (1), brassicasterol (2), and 7-ketobrassicasterol (3). Compound 1 is usually observed in plant. Compounds 2 is observed in Brassica sp., and compounds 3 have very rarely occurred in natural source including plant.
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