Flavones from the leaves of Ficus gomelleira

Amaral, Daniel Furlan; Arruda, Mara Silvia Pinheiro; Arruda, Alberto C.; Müller, Adolfo Henrique; Pantoja, Luna L. J.; Lima, Tânia M. da S.

doi:10.1590/s0103-50532001000400016

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…The investigation of flavonoids showcased variable results according to the hydroxylation and saturation of the aglycone, being the detection of flavones positive in the leaves while negative in the roots, regardless of supplementation (Table 1). This result is in consonance to literature, as flavones are reported to be produced in higher yields in the leaves of plants (Amaral et al, 2001).…”

Section: Discussionsupporting

confidence: 93%

Influence of organo-mineral supplementation on the production of secondary metabolites in in vitro-germinated Bromelia balansae Mez.

Souza

Thomaz

Kloppel

et al. 2021

RSD

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This work details the investigation of the influence of organo-mineral supplementation on the production of secondary metabolites in in vitro-germinated Bromelia balansae Mez. The seeds were germinated in vitro and transplanted to standard soils to undergo organo-mineral supplementation. The fully-grown plants were subjected to qualitative phytopharmacological prospection; quantitative analysis of total phenols and flavonoids; as well as chemical profiling by mass spectrometry. The in vitro germination of B. balansae was successful, with a germination rate of 94.95 %, thereby equaling to “super seeds” reported in literature. Moreover, the organo-mineral supplementation enhances the production of secondary metabolites in both leaves and roots, what therefore leads to higher yield of total phenols and flavonoids. Furthermore, mass spectrometry analysis confirmed the results from phytopharmacological prospection, and allowed the detection of fragments of secondary metabolites from shikimate/polyketide/mevalonate pathways.

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Section: Discussionsupporting

confidence: 93%

Influence of organo-mineral supplementation on the production of secondary metabolites in in vitro-germinated Bromelia balansae Mez.

Souza

Thomaz

Kloppel

et al. 2021

RSD

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“…1 H NMR spectrum give only two doublet signals in aromatic region at δ 6.91 (1H, d, J=8.4 Hz, H-6) and 6.58 (1H, d, J=8.4 Hz, H-7) indicating presence of two neighbor protons in Aring and suggest that ring B is full substituted. A sharp singlet signal at δ 8.4 suggested presence of 4'-OH group and the chelated hydroxyl group at δ 12.4 was consistent with a 5-Hydroxy flavone (25). Two methoxy groups showed two singlets at δ 3.23 and 3.33.…”

Section: Rf=071 (S5) Positive Esi-ms: M/z 418[m] + 1 H Nmr (500 Mmentioning

confidence: 81%

“…A signal at δ 5.3 (1H, d, J=7.6 Hz, H''-glu) was assigned to glucosyl anomeric proton, and suggested that the glycosidic bond had a β-linkage (29) (30). One prenyl oxy moiety at δ 4.48 (2H, d, J=7.5 Hz, 2H-1""), 5.58 (1H, t, J=7.2 Hz, H-2""), 1.19 (s, 3H-4"") and 1.23 (s, 3 H-5"") (25). These data with 13…”

Section: Rf=071 (S5) Positive Esi-ms: M/z 418[m] + 1 H Nmr (500 Mmentioning

confidence: 99%

Isolation of some chemical constituents from licorice and their evaluation as anticancer and antiviral agents

Hamed¹,

El-Amin²,

Refahy³

et al. 2013

Planta Med

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Raman and surface‐enhanced Raman spectra of flavone and several hydroxy derivatives

Teslova

Corredor

Livingstone

et al. 2007

J Raman Spectroscopy

104

108

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The Raman and surface-enhanced Raman spectra (SERS) of flavone and three of its hydroxy derivatives, 3-hydroxyflavone (3-HF) and 5-hydroxyflavone (5-HF) and quercetin (3,5,7,3 ,4 pentahydroxyflavone) have been obtained. The normal Raman (NR) spectra were taken in the powder form. The SERS spectra were obtained both on Ag colloids and Ag electrode substrates. Assignments of the spectrally observed normal modes were aided by density functional theory (DFT) calculations using the B3LYP functional and the 6-31+G * basis, a split valence polarized basis set with diffuse functions. Excellent fits were obtained for the observed spectra with little or no scaling. The most intense lines of the NR spectra are those in the C O stretching region (near 1600 cm −1 ). These lines are often weakened by proximity to the surface, while other lines at lower wavenumbers, due to in-plane ring stretches, tend to be strongly enhanced. The SERS spectrum of flavone is weak both on the colloid and on the electrode, indicating weak attachment to the surface. In contrast, the SERS spectra of the hydroxy derivatives of flavone are intense, indicating the assistance of OH groups in attachment to the surface. The spectra of the various species are compared, and a case study of application to detection of a textile dye (Persian berries), which contains quercetin, is presented.

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Flavones from the leaves of Ficus gomelleira

Cited by 6 publications

References 4 publications

Influence of organo-mineral supplementation on the production of secondary metabolites in in vitro-germinated Bromelia balansae Mez.

Influence of organo-mineral supplementation on the production of secondary metabolites in in vitro-germinated Bromelia balansae Mez.

Isolation of some chemical constituents from licorice and their evaluation as anticancer and antiviral agents

Raman and surface‐enhanced Raman spectra of flavone and several hydroxy derivatives

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