New steroidal saponin from Antigonon leptopus Hook. and Arn.
Maria Karmella L. Apaya1, Christine L. Chichioco‑Hernandez1★★ Corresponding author
- 1Institute of Chemistry, College of Science, University of the Philippines, Diliman, Quezon City 1101, Philippines.
CORRESPONDENCE
Christine L. Chichioco‑Hernandez
Institute of Chemistry, College of Science, University of the Philippines, Diliman, Quezon City 1101, Philippines.
Received: 12-10-2013; Revised: 06-12-2013.
Volume 10, Issue 39S · pp. 501–505 · PUBLISHED 2014 · DOI: 10.4103/0973-1296.139781
ABSTRACT
Background: Antigonon leptopus Hook. and Arn., Polygonaceae (cadena de amor), is a herbal remedy for pain and gout-like symptoms in the Philippines. The methanol extract of A. leptopus have shown strong inhibitory action against xanthine oxidase. Objective: To isolate and identify the compound responsible for the xanthine oxidase inhibitory action. Materials and Methods: A bioassay-guided isolation scheme using an in vitro assay for the inhibition of xanthine oxidase was employed. The structure was established using spectroscopic analysis and chemical methods. Results: The isolated compound was determined to be a noncompetitive inhibitor of xanthine with an IC50 of 1.79 μg/mL. Conclusion: The isolated compound may represent a new class of xanthine oxidase inhibitors.
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Apaya, M. K. L., & Chichioco‑Hernandez, C. L. (2014). New steroidal saponin from Antigonon leptopus Hook. and Arn.. Pharmacognosy Magazine, 10(39S), 501–505. https://doi.org/10.4103/0973-1296.139781