Two Alangium alkaloids from Alangium lamarckii

Area of Science:

• Phytochemistry
• Natural Product Chemistry
• Pharmacognosy

Background:

• Alangium lamarckii is a plant species known to produce various bioactive alkaloids.
• Previous research has identified several alkaloids from different parts of Alangium species.
• The chemical diversity of Alangium alkaloids warrants further investigation.

Purpose of the Study:

• To isolate and characterize new alkaloids from the dried fruits of Alangium lamarckii.
• To elucidate the chemical structures of the newly discovered compounds.
• To contribute to the understanding of the phytochemical constituents of Alangium lamarckii.

Main Methods:

• Extraction of alkaloids from dried Alangium lamarckii fruits.
• Purification of compounds using chromatographic techniques.
• Structure elucidation of isolated alkaloids employing spectroscopic methods (NMR, MS) and chemical derivatization.

Main Results:

• Two novel Alangium alkaloids, 1",2"-dehydrotubulosine and alangine, were successfully isolated.
• Several known alkaloids including tubulosine, isotubulosine, cephaeline, and others were also identified.
• The structures of the new alkaloids were confirmed through comprehensive spectroscopic and chemical analyses.

Conclusions:

• The study successfully identified two new Alangium alkaloids, expanding the known chemical diversity of the plant.
• The findings provide valuable data for further research into the pharmacological potential of these alkaloids.
• This research enhances the phytochemical database of Alangium lamarckii.