Three new coumarin derivatives from Maytenus hookeri

Area of Science:

• Natural Product Chemistry
• Medicinal Chemistry
• Pharmacology

Background:

• The plant Maytenus hookeri is a source of bioactive natural products.
• Coumarin derivatives are known for their diverse biological activities.
• Exploring novel compounds from natural sources is crucial for drug discovery.

Purpose of the Study:

• To isolate and characterize new coumarin derivatives from Maytenus hookeri.
• To evaluate the cytotoxic potential of isolated compounds against human cancer cell lines.

Main Methods:

• Isolation of compounds using chromatographic techniques.
• Structure elucidation through comprehensive spectroscopic analysis (NMR, HR-ESIMS).
• In vitro cytotoxic assays against A549, SK-Hep1, and HCT116 cell lines.

Main Results:

• Three new coumarin derivatives, maytenucoums A-C (1-3), were identified.
• Six known coumarin analogs (4-9) were also isolated and characterized.
• Compound 4 exhibited moderate cytotoxic activity with IC50 values ranging from 28.6 to 54.4 μM.

Conclusions:

• Maytenus hookeri branches yield novel coumarin derivatives.
• Compound 4 shows preliminary cytotoxic effects, warranting further investigation for anticancer potential.
• This study contributes to the understanding of Maytenus-derived coumarins and their pharmacological properties.