Triterpenoids and phenanthrenes from leaves of Bryophyllum pinnatum

Abstract From fresh leaves of Bryophyllum pinnatum three new constituents, bryophyllol, bryophollone and bryophollenone have been isolated and their structures elucidated by spectral and chemical studies. Three new compounds, bryophynol and two phenanthrene derivatives have also been identified in the mixture. 18α-Oleanane, ψ-taraxasterol, β-arnyrin acetate and a new sterol, reported earlier as a hydrolysed product, have also been obtained, along with a mixture of α- and β-amyrins and their acetates.