Abstract
Abstract The leaf, bark and timber extractives of Humboldtia laurifolia were investigated and the following compounds have been isolated: O -acetyloleanolic aldehyde, a sitosteryl ester, lupeol, sitosterol, a fatty acid, 5,7,4′-trihydroxyflavone (apigenin), (2 R ,3 R )-3,5,7,3′,5′-pentahydroxyflavan and 3α-methoxyfriedelan. The latter two compounds are new natural products.
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