Two novel triterpenoids, (2 α ,3 α )‐3‐{[4‐ O ‐( β ‐ D ‐glucopyranosyl)‐ β ‐ D ‐xylopyranosyl]oxy}‐2,23‐dihydroxy‐30‐methoxy‐30‐oxoolean‐12‐en‐28‐oic acid ( 1 ) and (2 α ,3 α )‐2,23,30‐trihydroxy‐3‐[( β ‐ D ‐xylopyranosyl)oxy]olean‐12‐en‐28‐oic acid ( 2 ) were isolated from Portulaca oleracea L., and they both showed weak cytotoxic activity assayed with the MTT method.
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Xin et al. (2008) studied this question.
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