Chemical study of a sample of green propolis from Passa Quatro, Minas Gerais-Brazil

Abstract

The phytochemical investigation of a sample of propolis from Passa Quatro-Minas Gerais State, Brazil, where nine constituents were isolated: a mixture of α-and β-amyrin, lupeol, a mixture of flavonols ramnocitrin and eupalitin, acacetin, 3-prenyl-4-hydroxycinnamic acid, 3,5-diprenyl-4- hydroxycinnamic acid the new compound, the (E)-3-[4-(3-phenylpropanoiloxy)]-3,5- diprenil-cinnamic acid. The structures of the isolated compounds were characterized by 1D-and 2D-NMR experiments, MS and IR spectrometry, and comparison with data described in the literature.