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Z. Naturforsch.
69c, 271 – 275
(2014)
doi:10.5560/ZNC.2014-0087
Excelsoside: A New Benzylic Diglycoside from the Leaves of Milicia excelsa
1 Department of Organic Chemistry, University of Yaoundé I, P. O. Box 812, Yaoundé, Cameroon. Fax: +237-22-235396. E-mail:
ngadjuibt@yahoo.fr
2 Institute of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10–14, D-55128 Mainz, Germany. Fax: +49-6131-39-22338. E-mail:
opatz@uni-mainz.de
3 Department of Chemistry, Higher Teacher's Training College, University of Yaoundé I, P. O. Box 47, Yaoundé, Cameroon
4 Department of Chemistry, Faculty of Science, University of Botswana, Block 237, Private Bag, 0022, Gaborone, Botswana
5 The African Academy of Sciences (AAS), P. O. Box 24916-00502, Nairobi, Kenya
*Authors for correspondence and reprint requests
Received April 30 / June 26, 2014 / published online August 13, 2014
A new benzylic diglycoside was isolated from the leaves of Milicia excelsa and identified as 3,4-dimethoxybenzyl β-d-xylopyranosyl(1→2)-β-d-glucopyranoside (1). It was obtained together with four known secondary metabolites including lupeol acetate (2), ursolic acid (3), triacontyl (E)-ferulate (4), and 2-(3,5-dihydroxyphenyl)benzofuran-5,6-diol (5). Their structures were determined based on their spectroscopic data and by comparison with those reported in the literature.
Key words: Milicia excelsa, Glycoside, Structure Elucidation, NMR Spectroscopy