New Phenolic Derivatives from Galeola faberi

Abstract

Seven phenolic derivatives, 2,4-bis(4-hydroxybenzyl)phenol (1), bis[4(β-D-glucopyranosyloxy)-benzyl] (S)-(-)-2-isopropylmalate (2), bis[4-(β-D-gluco-pyranosyloxy)benzyl] (S)-(-)-2-sec-butylmalate (3), 4-hydroxybenzyaldehyde (4), 4,4′-dihydroxydiphenyl-methane (5), 4-hydroxybenzyl alcohol (6), and 4-(β-D-glucopyranosyloxy)benzyl alcohol (7), were isolated from the rhizome of Galeola faberi for the first time. Substance 1 is a new natural compound; 2 is identical with the previously isolated and characterised Substance V from Galeola septentrious. It is accompanied in the plant here studied by the novel homologue 3. Their structures were established by chemical and spectral methods.

Key words

Galeola faberi Rolfe - Orchidaceae - phenolic derivatives