| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5166884 | Phytochemistry | 2008 | 8 Pages |
Abstract
Six 21β-hydroxy pentacyclic triterpenes, five oleanane and one ursane types were isolated from Hippocratea excelsa, in addition to the known 3α,21β-dihydroxy-olean-12-ene (1). Their structures were elucidated on the basis of spectroscopic analyses, including homo- and heteronuclear NMR experiments (COSY, ROESY, HSQC and HMBC) and comparison with literature data. Compounds 2-5 were assayed against Giardia intestinalis, but did not show antiprotozoal activity.
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Authors
David Cáceres-Castillo, Gonzalo J. Mena-Rejón, Roberto Cedillo-Rivera, Leovigildo Quijano,