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Polyacetylenic caffeoyl amides from Ammodaucus leucotrichus
Ahmed Hajib1, Ombeline Danton2, Morris Keller2
1Laboratory of Bioactives and Molecules of Interest, National Agency of Medicinal and Aromatic Plants (ANPMA) BP 159, Principal, Taounate, 34000, Morocco; Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056, Basel, Switzerland; Equipe de Chimie des Plantes et de Synthèse Organique et Bioorganique, URAC23, Faculty of Science, B.P. 1014, Geophysics, Natural Patrimony and Green Chemistry (GEOPAC) Research Center, Mohammed V University, Rabat, Morocco.
Researchers identified six new polyacetylenic caffeoyl amides from the North African plant Ammodaucus leucotrichus. This study marks the first report of these compounds as specialized metabolites, expanding our understanding of plant chemistry.
Area of Science:
- Phytochemistry
- Natural Products Chemistry
- Ethnobotany
Background:
- Ammodaucus leucotrichus (Apiaceae) is a North African plant used in traditional medicine.
- The chemical constituents of A. leucotrichus are not fully elucidated.
- Polyacetylenic compounds are known for diverse biological activities.
Purpose of the Study:
- To isolate and characterize novel chemical compounds from Ammodaucus leucotrichus fruits.
- To investigate the presence of polyacetylenic caffeoyl amides as specialized metabolites in this species.
Main Methods:
- Phytochemical investigation using various chromatographic techniques.
- Structure elucidation via 1D and 2D NMR spectroscopy and mass spectrometry.
- Confirmation of stereochemistry using electronic circular dichroism and GC-MS analysis of sugar derivatives.
Main Results:
- Six new polyacetylenic caffeoyl amides were isolated and structurally characterized.
- Five known flavones and three known lignans were also identified.
- This study represents the first report of polyacetylenic caffeoyl amides as specialized metabolites.
Conclusions:
- The fruit of Ammodaucus leucotrichus is a rich source of diverse secondary metabolites.
- The identification of novel polyacetylenic caffeoyl amides contributes to the phytochemical knowledge of the Apiaceae family.
- This discovery opens avenues for further research into the biological activities and potential applications of these compounds.
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