Monoterpene alkaloids, iridoids and phenylpropanoid glycosides from Osmanthus austrocaledonica

Six monoterpene alkaloids have been isolated fram the aerial parts of Osmanthus austrocaledonica. Two of these, dihydrojasminine and austrodimerine, are novel compounds. Their structures have been elucidated on the basis of their spectral data and molecular modeling. Seven iridoids and six phenolic compounds have been also isolated from the same plant. Two of these, austrosmoside and 6'-O-beta-(E)-cinnamoylverbascoside, are novel compounds. Their structures have been deduced from their spectral data and confirmed by chemical correlations. (C) 1998 Elsevier Science Ltd. All rights reserved.