Affiliation:
1. Laboratório de Bioprospecção Fitoquímica, Departamento de Ciências Moleculares, Universidade Federal Rural de Pernambuco, 52171-900 Recife, PE, Brazil
2. Colegiado de Zootecnia, Universidade Federal do Vale de São Francisco, 56300-990 Petrolina, PE, Brazil
Abstract
An investigation of the geopropolis collected byMelipona subnitida(jandaíra) stingless bee led to the isolation and characterization of two phenylpropanoids, 6-O-p-coumaroyl-D-galactopyranose (1) and 6-O-cinnamoyl-1-O-p-coumaroyl-β-D-glucopyranose (2), and seven flavonoids, 7-O-methyl-naringenin (3), 7-O-methyl aromadendrin (4), 7,4′-di-O-methyl aromadendrin (5), 4′-O-methyl kaempferol (6), 3-O-methyl quercetin (7), 5-O-methyl aromadendrin (8), and 5-O-methyl kaempferol (9). The structure of the new phenylpropanoid (1) was established from IR, LC-ESI-MS, and NMR spectral data, including 2D NMR experiments. The extract and fractions demonstrated significant antioxidant activity in DPPH, ABTS, andβ-carotene/linoleic acid tests.
Funder
Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco
Subject
Complementary and alternative medicine
Cited by
31 articles.
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