Novel stilbenes from Artocarpus nanchuanensis

Area of Science:

• Natural Product Chemistry
• Medicinal Chemistry
• Pharmacology

Background:

• Artocarpus nanchuanensis is a plant source of bioactive compounds.
• Protein tyrosine phosphatase 1B (PTP1B) is a target for metabolic diseases like diabetes.
• Stilbene derivatives are known for diverse biological activities.

Purpose of the Study:

• To isolate and characterize new stilbene derivatives from Artocarpus nanchuanensis.
• To evaluate the PTP1B inhibitory potential of isolated compounds.

Main Methods:

• Isolation of compounds using chromatographic techniques.
• Structure elucidation through comprehensive spectral data analysis (NMR, MS).
• In vitro enzymatic assay to determine PTP1B inhibitory activity (IC50 values).

Main Results:

• Four new stilbene derivatives, named hypargystilbenes B-E (1-4), were identified.
• Seven known compounds (5-11) were also isolated and identified.
• Hypargystilbene B, D, and E displayed significant PTP1B inhibitory activity.
• IC50 values were recorded as 3.23 nM (B), 37.31 nM (D), and 2.53 nM (E).

Conclusions:

• The study successfully identified novel stilbene derivatives from Artocarpus nanchuanensis.
• Hypargystilbenes B, D, and E are potent inhibitors of PTP1B.
• These findings highlight the potential of Artocarpus nanchuanensis-derived stilbenes as therapeutic agents for PTP1B-related disorders.