title: Isolation and structure determination of triterpenes from Iris tectorum.
abstract: Four iridal-type triterpenoids, two of which were new compounds, have been isolated from rhizomes of Iris tectorum Maxim. Their structures were determined by 1D and 2D NMR spectroscopy and ESI-MS spectrometry. The compounds were identified as the iritectols A and B, and the known iridobelamal A and isoiridogermanal. The presence of epoxide and tetrahydrofuran functions are not common in previously isolated iridal-type triterpenoids.
authors.affiliation: Centre for Natural Medicines Research, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, United Kingdom.
authors.forename: Rui
authors.initials: R
authors.lastname: Fang
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Houghton
authors.forename: Chong
authors.initials: C
authors.lastname: Luo
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Hylands
mesh_terms: D031323:Iris Plant / Q000737:chemistry*; D015394:Molecular Structure; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification*
chemical_list: D014315:Triterpenes