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Abstract:
Phytochemical investigation of different plant parts of Schiekia orinocensis, a neotropical member of the
Haemodoraceae, resulted in the structure elucidation of thirteen phenylphenalenone-type compounds, five
known flavonoids and one new 1,3-disubstituted glycerol derivative. Six of the phenylphenalenones are reported
for the first time, among them five minor compounds derived from the reaction with acetone used for extraction.
The occurrence of the phenylphenalenones possessing C19, C18O or C18N skeletons confirmed the chemotaxonomic
relationship of S. orinocensis with other members of the Haemodoraceae, especially the Haemodoroideae
subfamily. The tissue-specific occurrence of the identified compounds was also subject to this study.
