Triterpenes from Protium hebetatum resin

  • Nat Prod Commun. 2010 Aug;5(8):1181-2.
Delcio Dias Marques  1 ,  Ilmar Bernardo Graebner ,  Telma Leda Gomes de Lemos ,  Luciana Lucas Machado ,  Jõao Carlos Costa Assunção ,  Francisco José Queiroz Monte
Affiliations
  • 1. Centro de Ciências da Natureza e Biológicas, Universidade Federal do Acre, 69915-900 Rio Branco-AC, Brazil.
PMID: 20839613
Abstract

Three olean (beta-amyrenone, beta-amyrin and maniladiol), three ursane (alpha-amyrinone, alpha-amyrin and breine) and four tirucallane (3-oxotirucalla-8,24-dien-21-6ic acid, 3alpha-hydroxytirucalla-8,24-dien-21-oic acid, 3alpha-acetoxytirucalla-8,24-dien-21-oic acid and 3alpha-hydroxytirucalla-7,24-dien-21-oic acid) Triterpenes were isolated from the oleoresin of Protium hebetatum Daly. The structures were established mainly by 13C, 1D and 2D NMR spectroscopic analysis. The isolation of 3alpha-hydroxytirucalla-8,24-dien-21-oic acid permitted correction of the chemical shift assignments of some of its carbon atoms.

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