Low molecular weight components from the buds of Pinus sibirica Du Tour.

摘要

Low molecular weight phenolic compounds from Siberian pine buds were analysed in Russia. Samples were gathered in May 2002 in the Irkutsk region and phenolic compounds were extracted in ethanol. Mass spectrometric and 2D NMR spectrometric data are presented. Substances isolated included 4-O- beta -D-glucopyranoside of trans-p-coumaric acid, its methyl ester, trans-p-coumaroylquinic acid, 3'-O- beta -D-glucopyranoside of dihydroquercetin and 3'-O- beta -D-glucopyranoside of quercetin. HPLC analysis identified p-coumaric, ferulic, vanillic, protocatechuic and p-oxibenzoic acids.