Chemistry and Biodiversity 2006-Aug
Two new tetracyclic triterpenes from the heartwood of Ailanthus excelsa Roxb.
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Keywords
Abstract
Two new dammarane-type triterpenes, ailexcelone and ailexcelol, together with ocotillone, malabaricol, epoxymalabaricol, lupeol, and sitosterol-3-O-beta-D-glucoside were isolated from the heartwood of Ailanthus excelsa. The structures of the new compounds were established on the basis of 1D- and 2D-NMR data. Ocotillone, malabaricol and epoxymalabaricol were isolated for the first time from A. excelsa. All of the isolates were tested for their antifungal activity.