143
Views
25
CrossRef citations to date
0
Altmetric
Original Articles

Two new xanthones from Artocarpus obtusus

, , , , , & show all
Pages 106-112 | Received 18 Sep 2009, Accepted 26 Oct 2009, Published online: 04 Feb 2010
 

Abstract

Two new xanthones, pyranocycloartobiloxanthone A (1) and dihydroartoindonesianin C (2), were isolated from the stem bark of Artocarpus obtusus Jarrett by chromatographic separation. Their structures were determined by using spectroscopic methods and comparison with known related compounds. Pyranocycloartobiloxanthone A (1) showed strong free radical scavenging activity by using DPPH assay as well as cytotoxicity towards K562, HL-60, and MCF7 cell lines.

Acknowledgements

We wish to thank Universiti Putra Malaysia for providing laboratory facilities; the Malaysian Government for providing a research grant under Intensification of Research in Priority Areas (IRPA) Program; and one of us (NH) wishes to thank Universiti Sains Malaysia for granting study leave.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.