Abstract
Detailed structural study of the major triterpenoids from chloroform extract of Agarista mexicana revealed the presence of new pentacyclic triterpene lactone 3β-hydroxy-ursan-28β, 19β-olide together with four known compounds, 12-ursene, campesterol, stigmasterol, sitosterol. These compounds were isolated by chromatography and their structures confirmed by NMR experiments and by MS.
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