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 6 beta-senecioyloxytropan-3 alpha- methylmesaconate, 6 beta-cinnamoyloxytropan-3 alpha-methylmesaconate, 6 beta-senecioyloxytropan-3 alpha-ol and cis-tuans N-(4-hydroxyphenethyl) ferulamides. Other known alkaloids were also isolated. Their structures were elucidated by spectroscopic methods. Copyright (C) 1996 Published by Elsevier Science Ltd