Constituintes químicos das flores de Pterogyne nitens (Caesalpinioideae)

Constituintes químicos das flores de Pterogyne nitens (Caesalpinioideae)

The phytochemical investigation of the flowers of Pterogyne nitens (Caesalpinioideae) resulted in the isolation and identification of nine phenolic derivatives, quercetin 3-O-sophoroside, taxifolin, astilbin, ourateacatechin, caffeic, ferulic, sinapic, chlorogenic and gallic acid, besides two guanidine alkaloids, pterogynine, pterogynidine. This is the first time these compounds have been reported in P. nitens flowers. As this is a monospecific genus, these secondary metabolites may have taxonomical significance. Their structures were assigned on the basis of spectroscopic analyses, including two-dimensional NMR techniques.

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Bibliographic Details
Main Authors: Regasini,Luis Octávio, Fernandes,Daniara Cristina, Castro-Gamboa,Ian, Silva,Dulce Helena Siqueira, Furlan,Maysa, Bolzani,Vanderlan da Silva, Barreiro,Eliezer Jesus, Cardoso-Lopes,Elaine Monteiro, Young,Maria Cláudia Marx, Torres,Luce Brandão, Vellosa,José Carlos Rebuglio, Oliveira,Olga Maria Mascarenhas de
Format: Digital revista
Language:Portuguese
Published: Sociedade Brasileira de Química 2008
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000400018
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Summary:The phytochemical investigation of the flowers of Pterogyne nitens (Caesalpinioideae) resulted in the isolation and identification of nine phenolic derivatives, quercetin 3-O-sophoroside, taxifolin, astilbin, ourateacatechin, caffeic, ferulic, sinapic, chlorogenic and gallic acid, besides two guanidine alkaloids, pterogynine, pterogynidine. This is the first time these compounds have been reported in P. nitens flowers. As this is a monospecific genus, these secondary metabolites may have taxonomical significance. Their structures were assigned on the basis of spectroscopic analyses, including two-dimensional NMR techniques.

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