Indole Alkaloids from Trachelospermum jasminoides

Area of Science:

• Phytochemistry
• Natural Product Chemistry
• Organic Chemistry

Background:

• Traditional medicinal plants often yield valuable bioactive compounds.
• Exploring the chemical constituents of *Tabernaemontana jasminoides* (*T. jasminoides*) is of interest for discovering novel natural products.

Purpose of the Study:

• To isolate and identify indole alkaloids from *T. jasminoides*.
• To characterize the isolated compounds using spectroscopic methods.

Main Methods:

• Extraction of alkaloids from the leaves and stems of *T. jasminoides*.
• Purification of compounds using chromatographic techniques.
• Structure elucidation using Carbon-13 Nuclear Magnetic Resonance ((13)C-NMR) spectroscopy.

Main Results:

• Five indole alkaloids were successfully isolated: coronaridine, voacangine, apparicine, conoflorine, and 19-epi-voacangarine.
• The (13)C-NMR spectra for apparicine and 19-epi-voacangarine were obtained and are presented.
• This study contributes to the phytochemical understanding of *T. jasminoides*.

Conclusions:

• The leaves and stems of *T. jasminoides* are a source of diverse indole alkaloids.
• The characterization of these compounds, including their NMR spectra, aids in future research and potential applications.
• Further investigation into the biological activities of these isolated alkaloids is warranted.