Tropane alkaloids from Schizanthus litoralis

Six new tropane alkaloids have been isolated from the leaves of the endemic Chilian plant Schizanthus litoralis (Solanaceae). The new structures include a new tropanol dimer of itaconic acid together with 6β-senecioyloxytropan-3α-methylmesaconate, 6β-cinnamoyloxytropan-3α-methylmesaconate, 6β-senecioyloxytropan-3α-ol and cis-trans N-(4-hydroxyphenethyl) ferulamides. Other known alkaloids were also isolated. Their structures were elucidated by spectroscopic methods.