Fitoquímica e quimiossistemática de Euxylophora paraensis (Rutaceae)
Marsele M. Isidoro,Maria Fátima das Graças Fernandes da Silva,João B. Fernandes,Paulo C. Vieira,Alberto C. Arruda,Sebastião da Cruz Silva +5 more
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TLDR
In this article, the identification of the known coumarins isooxypeucedanin (IoP) and xanthotoxin from the leaves and stem of Euxylophora have been carried out.Abstract:
Phytochemical studies of the leaves and stem have led to the identification of the known coumarins isooxypeucedanin, oxypeucedanin hydrate, xanthotoxin, isopimpinellin, 8-methoxymarmesin and marmesin, flavonoids quercetin-3-O-α-L-rhamnopyranoside, myricetin-3-O-α-L-rhamnopyranoside and hesperidin, alkaloids skimmianine and N-methylflindersine and limonoid limonin. The compounds isolated and the chemical profile of Euxylophora obtained from the literature clearly indicate its phytochemical affinities with other Rutoideae species.read more
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Journal ArticleDOI
Evaluation of the antioxidant potential of myricetin 3-O-α-L-rhamnopyranoside and myricetin 4′-O-α-L-rhamnopyranoside through a computational study
Rodrigo A. Mendes,Shawan K. C. Almeida,Iuri N. Soares,Cristina A. Barboza,R.G. Freitas,Alex Brown,Gabriel L. C. de Souza +6 more
TL;DR: This work indicates Compound M3 as having its lowest bond dissociation enthalpy from the several different OH groups with similar value to the lowest for myricetin and, thus, presenting antioxidant potential as good as its parent molecule and indicatescompound M4′ as being a slightly inferior antioxidant.
Book ChapterDOI
Chapter 1 – Definition, typology, and occurrence of alkaloids
TL;DR: Alkaloids are molecules participating in both producer and consumer chains in nature, and are vital in feeding and enjoy activation, aggression, and defense of various species.
Journal ArticleDOI
Growth ring analysis of Euxylophora paraensis through x-ray microdensitometry
Eva Santos de Andrade,Silvana dos Santos Carvalho Garcia,Ana Luisa Kerti Mangabeira Albernaz,Mario Tomazello Fillho,Victor Hugo Pereira Moutinho +4 more
TL;DR: This study concludes that the growth rings of the studied species are distinct and annual, validating the technique used and deepening the application feasibility of this technique through future, broader dendroecological studies.
Journal ArticleDOI
New Limonoids from Hortia oreadica and Unexpected Coumarin from H. superba Using Chromatography over Cleaning Sephadex with Sodium Hypochlorite
Vanessa Gisele Pasqualotto Severino,Sâmya Danielle L. de Freitas,Patrícia A.C. Braga,Moacir Rossi Forim,M. Fátima das G. F. da Silva,João B. Fernandes,Paulo C. Vieira,Tiago Venâncio +7 more
TL;DR: It is evident from limonoid data that Hortia takes an isolated position within the Rutaceae, and H. superba afforded the unexpected coumarin 5-chloro-8-methoxy-psoralen, which may be a genuine natural product.
Journal ArticleDOI
Leaf anatomy and histochemistry of secretory structures of Zanthoxylum caribaeum Lam. (Rutaceae)
Carine Raisa Barbosa de Andrade,Fabiano Machado Martins,Hugo Neves Brandão,Clayton Q. Alves,Larisse de Freitas-Silva +4 more
TL;DR: In this paper, the leaves of Zanthoxylum L. caribaeum were collected and processed for anatomical, histochemical and micromorphological characterization following standard methodologies.