1989
DOI: 10.1016/b978-0-444-87449-8.50009-2
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Flavonoids

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Cited by 98 publications
(47 citation statements)
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References 177 publications
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“…A investigação das frações CHCl 3 e AcOEt, provenientes do fracionamento cromatográfico do extrato EtOH da casca da raiz resultou em isolamento e caracterização das lignanas excelsina (1) 14 e pinoresinol (2) 15 ; da mistura binária dos esteróides β-sitosterol (3) e estigmasterol (4) na proporção de 3:1; das flavanonas naringenina (5) e aromadendrina (6) 16 ; da mistura constituída de 3-O-β-glicopiranosil-β-sitosterol (7) e 3-O-β-glicopiranosil-estigmasterol (8) 17 , além do ácido gálico (9) 18 . O extrato EtOH do lenho da raiz foi submetido a procedimentos cromatográficos semelhantes àqueles utilizados para a casca da raiz.…”
Section: Resultsunclassified
“…A investigação das frações CHCl 3 e AcOEt, provenientes do fracionamento cromatográfico do extrato EtOH da casca da raiz resultou em isolamento e caracterização das lignanas excelsina (1) 14 e pinoresinol (2) 15 ; da mistura binária dos esteróides β-sitosterol (3) e estigmasterol (4) na proporção de 3:1; das flavanonas naringenina (5) e aromadendrina (6) 16 ; da mistura constituída de 3-O-β-glicopiranosil-β-sitosterol (7) e 3-O-β-glicopiranosil-estigmasterol (8) 17 , além do ácido gálico (9) 18 . O extrato EtOH do lenho da raiz foi submetido a procedimentos cromatográficos semelhantes àqueles utilizados para a casca da raiz.…”
Section: Resultsunclassified
“…The known natural products quercetin (4, 5,7,3',4'-tetrahydroxyflavonol) and betulinic acid [6, 3β-hydroxy-20(29)-lupen-28-oic acid] were identified mainly by their 1 H and 13 C-NMR spectra and comparison with literature data 7,8 . 3-Hydroxy-4-isopentenyl-8,9-methylenedioxypterocarpan (5) has been recently reported 5,6 .…”
Section: Resultsmentioning
confidence: 99%
“…Comparative analysis of the hydrogen broad band decoupled (HBBD) and distortionless enhancement by polarization transfer (DEPT) 13 C-NMR spectra 9 of 3, in combination with the 1 H-NMR (one-and two-dimensional 1 7 . The presence of the two hydroxy groups was confirmed by the singlet signals at δH 2.04 (AcO-3'') and 2.43 (AcO-5) observed in the 1 H-NMR spectrum and δC 170.36 and 20.97 (AcO-3'') and 169.12 and 21.08 (AcO-5), in the 13 C-NMR spectrum of the diacetyl derivative 3b (Table 1).…”
Section: Resultsmentioning
confidence: 99%
“…10 The isolation of 1 from Ocotea minarum is noteworthy for its chemosystematic relevance, since members of the Lauraceae have been reported to contain aporphine and benzyltetrahydroisoquinoline but not indole alkaloids. 11 It is also worth of mention in this work the compartmentalized accumulation of the secondary metabolites present in O. minarum: the indole alkaloid and the flavonoid derivatives are accumulated in the fruits, whereas the alkyl phenols, the aryl propene derivative and the lignan were isolated from the heartwood and the sesquiterpene from the trunk bark.…”
Section: Resultsmentioning
confidence: 99%
“…We describe herein the isolation of an indole alkaloid (1), a coumarin (2) and four flavonoids (3 -6) from the fruits, a lignan (7), two alkyl phenols (8, 9), a aryl propene derivative (10) and two steroids (11,12) from the heartwood and a sesquiterpene (13) and a steroid (14) from the trunk bark of a specimen of Ocotea minarum collected in Campo Grande, MS State.…”
Section: Introductionmentioning
confidence: 99%