摘要:
Two sesterterpenoids, cheilanthenetriol (1) and cheilanthenediol (2), were isolated from the leaves of Aleuritopteris Khunii together with hop-22(29)-ene, adiantone, hydroxyhopane, a mixture of sterols, 3, 5-dihydroxy-7, 4'-dimethoxyflavone, 5-hudroxy-3, 7, 4'-trimethoxyflavone and 4-methoxybenzoic acid. Cheilanthenetriol was found to be identical with authentic samples of cheilanthatriol and cheilarinosin isolated from Indian ferns. The new sesterterpenoid, cheilanthenediol, wes established as (17Z)-13α, 19-dihydroxycheilanth-17-ene.