L
Leosvaldo S. M. Velozo
Researcher at Federal University of Rio de Janeiro
Publications - 20
Citations - 312
Leosvaldo S. M. Velozo is an academic researcher from Federal University of Rio de Janeiro. The author has contributed to research in topics: Piperaceae & Piper. The author has an hindex of 10, co-authored 20 publications receiving 293 citations.
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Journal ArticleDOI
C-glycosyl flavones from Peperomia blanda
Leosvaldo S. M. Velozo,Marcelo J. P. Ferreira,Marcelo J. P. Ferreira,Maria Isabel S. Santos,Davyson de Lima Moreira,Elsie Franklin Guimarães,Vicente de Paulo Emerenciano,Maria Auxiliadora Coelho Kaplan +7 more
TL;DR: The methanol extract from aerial parts of the Peperomia blanda (Piperaceae) yielded two C-glycosyl-flavones, which showed only modest activity and the antioxidant activity of both compounds was investigated using the DPPH assay.
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Chemistry and biological activity of essential oils from Piper claussenianum (Piperaceae).
André M. Marques,Anna Léa Silva Barreto,Eber M Batista,José Alexandre Da Rocha Curvelo,Leosvaldo S. M. Velozo,Davyson de Lima Moreira,Elsie F. Guimarães,R.M.A. Soares,Maria Auxiliadora Coelho Kaplan +8 more
TL;DR: The essential oil from P. claussenianum fresh leaves, which was rich in (E)-nerolidol, showed effective growth inhibition of L. amazonensis due to the high percentage of this metabolite in the mixture.
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Absolute Configuration of a Rare Sesquiterpene: (+)-3-Ishwarone
Fernando Martins dos Santos Junior,Cody L. Covington,Mauro Barbosa de Amorim,Leosvaldo S. M. Velozo,Maria Auxiliadora Coelho Kaplan,Prasad L. Polavarapu +5 more
TL;DR: The analyses of similarity measures between experimental and predicted spectra for VCD and VDF clearly suggested that the absolute configuration of (+)-3-ishwarone is (1R,2S,4S,5R,9R,11R, 11R).
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Odoratin 7-O-β-D-glucopyranoside from Bowdichia virgilioides
TL;DR: An isoflavonoid glucoside, odoratin 7-O-β-D-glucopyranoside, was isolated from the roots of Bowdichia virgilioides and its structure was established by spectroscopic and chemical methods.
Journal ArticleDOI
Unusual chromenes from Peperomia blanda.
Leosvaldo S. M. Velozo,Marcelo J. P. Ferreira,Maria Isabel S. Santos,Davyson de Lima Moreira,Vicente de Paulo Emerenciano,Maria Auxiliadora Coelho Kaplan +5 more
TL;DR: From the methanol extract of the aerial parts of Peperomia blanda (Piperaceae), two chromenes were isolated and characterized mainly through application of 2D-NMR spectroscopy.