title: Prokaryotic triterpenoids. The hopanoids of the purple non-sulphur bacterium Rhodomicrobium vannielii: an aminotriol and its aminoacyl derivatives, N-tryptophanyl and N-ornithinyl aminotriol.
abstract: Triterpenoids belonging to the hopane family are widely distributed in prokaryotes. Three new hopanoids have now been isolated from the purple non-sulphur bacterium Rhodomicrobium vannielii and identified essentially by spectroscopic methods. The basic compound is the 35-aminobacteriohopane-32,33,34-triol, from which the other two hopanoids are derived by introduction of a tryptophanyl or an ornithinyl moiety linked to the amino group at C-35 via an amide linkage. This is the first report of hopanoids possessing an amino group in their side-chain and linked to aminoacyl residues.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry / Q000379:methods; D012244:Rhodospirillaceae / Q000032:analysis*; D012997:Solvents; D013053:Spectrophotometry; D013696:Temperature; D014315:Triterpenes / Q000302:isolation & purification*
chemical_list: D012997:Solvents; D014315:Triterpenes