| Abstract: | The bitter compounds isolated from the species Simaroubaceae represent a new family of degraded triterpenoids. Ailanthone, glaucarubolone and chaparrinone having a C20 skeleton belong to this family and their structures were previously determined. Mass spectra of these compounds and some of their derivatives have now been studied in detail and the results obtained are discussed in this communication. The observed fragmentation pattern is characteristic of the structural features of this group of compounds. |
