| Literature DB >> 19023787 |
E C Machado1, R A Yunes, A Malheiros, E C Gomez, F Delle Monache.
Abstract
Three new triterpenes, 2alpha-acetoxy-3beta,19alpha-dihydroxy-11alpha,12alpha-epoxy-ursan-28,13beta-olide, 3beta-acetoxy-2alpha,19alpha-dihydroxy-11alpha,12alpha-epoxy-ursan-28,13beta-olide and 2-O-acetyl-euscaphic acid together eight known triterpenes were isolated from the roots and stems of Cecropia catharinensis. Their structures were determined by detailed analysis of NMR spectra and the relative configurations established by difference nOe experiments. In addition, four flavonoid glucosides (vitexin, isovitexin, orientin and isoorientin) were found in the leaves.Entities:
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Year: 2008 PMID： 19023787 DOI： 10.1080/14786410701766406
Source DB: PubMed Journal: Nat Prod Res ISSN： 1478-6419 Impact factor: 2.861