Triterpenes from Protium hebetatum resin.
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.
Marques
Delcio Dias
DD
Centro de Ciências da Natureza e Biológicas, Universidade Federal do Acre, 69915-900 Rio Branco-AC, Brazil.
Graebner
Ilmar Bernardo
IB
de Lemos
Telma Leda Gomes
TL
Machado
Luciana Lucas
LL
Assunção
Jõao Carlos Costa
JC
Monte
Francisco José Queiroz
FJ
D029403:Burseraceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes
D010936:Plant Extracts; D014315:Triterpenes; C018620:oleoresins