D:A-friedo-oleanane triterpenes from the stem bark of Phyllobotryon spathulatum

Simon Gibbons, Alexander I. Gray, David C. R. Hockless, Catherine Lavaud, Jean-Marc Nuzillard, Georges Massiot, Peter G. Waterman, Allan H. White

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Three D:A friedo-oleanane triterpenes have been isolated from the bark of Phyllobotryon spathulatum. They were characterized by the use of Heteronuclear Multiple Bond Coherence NMR spectroscopy as the known compound odolactone (3-oxo-D:A-friedo-oleanan-27,15α- lactone), and two novel friedo-oleananes, 3β-hydroxy-D:A-friedo-oleanan-27,29-dioic acid (structure confirmed by X-ray analysis of the dimethyl ester) and methyl-3-oxo-19β,21β-dihydroxy-30-nor-D:A-friedo-olean-20(29)-en-27-carboxylate.
Original languageEnglish
Pages (from-to)273-277
Number of pages5
Issue number1
Publication statusPublished - 1 Aug 1993

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