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Natural Product Research
Formerly Natural Product Letters
Volume 23, 2009 - Issue 7
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Original Articles

Dunaliine A, a new amino diketone from Desmos dunalii (Annonaceae)

, , , , , & show all
Pages 652-658 | Received 04 Aug 2007, Accepted 17 Apr 2008, Published online: 29 Oct 2009
 

Abstract

Dunaliine A (1), a new amino diketone, has been isolated from the leaves of Desmos dunalii together with four known dihydrochalcones: 2′,4-dihydroxy-4′,6′-dimethoxy-3′,5′-dimethyldihydrochalcone (2), 2′,4-dihydroxy-4′,6′-dimethoxydihydrochalcone (3), 2′,4-dihydroxy-4′,5′,6′-trimethoxydihydrochalcone (4) and 2′,4-dihydroxy-5′-methyl-4′,6′-dimethoxydihydrochalcone (5). The structures of these compounds were established notably by spectral analysis (1D- and 2D- 1H, 13C NMR), UV, IR and HRMS.

Acknowledgements

This work was supported by F-Vote (No. Vote: F0150/2002C) of the University of Malaya. We also would like to thank Christian Girard for the HREIMS results.

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