New Coumarins from Pilocarpus goudotianus

Area of Science:

• Phytochemistry
• Natural Product Chemistry
• Organic Chemistry

Background:

• Pilocarpus species are known sources of bioactive compounds.
• Coumarins are a diverse class of natural products with various pharmacological properties.
• Exploration of Pilocarpus goudotianus secondary metabolites is ongoing.

Purpose of the Study:

• To isolate and characterize new coumarins from the leaves of Pilocarpus goudotianus.
• To elucidate the chemical structures of novel compounds using spectroscopic and chemical methods.

Main Methods:

• Phytochemical investigation of Pilocarpus goudotianus leaf extract.
• Isolation of compounds using chromatographic techniques.
• Structure elucidation through spectroscopic methods (NMR, MS) and chemical derivatization.

Main Results:

• Three new coumarins, named donatin, alloxanthoxyletol, and (+)-elisin, were isolated.
• Eight known coumarins were also identified.
• The structures of the new coumarins were fully elucidated.

Conclusions:

• The study expands the knowledge of coumarin diversity in the Pilocarpus genus.
• Donatin, alloxanthoxyletol, and (+)-elisin represent novel additions to the coumarin family.
• The findings contribute to the chemotaxonomic understanding of Pilocarpus species.