Abstract
Eight triterpenoid hydrocarbons were characterized from the fresh leaves of Cheiropleuria bicuspis. They consist of hop-22(29)-ene, neohop-13(18)-ene, fern-7-ene, (18R)-dammara-13(17), 21-diene, eupha-7, 21-diene, 13α(H)-malabaricatriene, γ-polypodatetraene and squalene, all of which have different carbon skeletons, A new triterpenoid alcohol was isolated and established as 1α, 11α, 30-trihydroxyhopane. We also detected friedelin, hydroxyhopane, dryocrassol, lupeol, fernenol, 1α, 11α, 22-trihydroxyhopane, a mixture of sterols and a mixture of fatty acid esters of cycloartanoids, methylsterols and sterols. These findings suggest that Cheiropleuria bicuspis is related to Microsorium (Polypodiaceae), but are nevertheless consistent with the independency of Cheiropleuriaceae.
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