Two New Triterpenes from the Husks of Xanthoceras sorbifolia

Abstract

Two new triterpenes, 22-angeloyl-21-epoxyangeloylbarringtogenol C (1) and 21,22-diangeloyl-24-hydroxy-R₁-barrigenol (2), and the known 21,22-diangeloyl-R₁-barrigenol (3) were isolated from the husks of Xanthoceras sorbifolia Bunge. Their structures were elucidated based on detailed NMR analysis. Compounds 1 and 2 inhibited significantly the growth of cancer cell lines (A375-S2, HeLa) with IC₅₀ values ranging from 2.9 to 76.3 μmol/L.

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