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Note | Regular issue | Vol 68, No. 2, 2006, pp.381-386
Published online, 13th January, 2006
DOI: 10.3987/COM-05-10637
Acylated Cyanidin 3,7,3’-Trigllucosides with p-Hydroxybenzoic Acid from the Flowers of Dendrobium

Fumi Tatsuzawa,* Norio Saito, Tomohisa Yukawa, Koichi Shinoda, Atsushi Shigihara, and Toshio Honda

*Department of AGro-Enviromental Sciences, Hokkaido Junior College, Takushoku University, Fukagawa, Hokkaido 074-8585, Japan

Abstract

Two new acylated anthocyanins were isolated from the purple flowers of Dendrobium x superbiens, along with four known pigments. These pigments were all based on cyanidin 3,7,3’-triglucoside, and acylated variously with malonic, sinapic, and p-hydroxybenzoic acids. One of new anthocyanins was fully determined to be cyanidin 3-O-[6-O-(malonyl)-β-D-glucopyranoside]- 7-O-[6-O-(p-hydroxybenzoyl)-β-D-glucopyranoside]-3’-O-[6-O-(4-(β-D-glucopyranosyl)-p-hydroxybenzoyl)-β-D-glucopyranoside] by chemical and spectral methods. Another new pigment was provisionally determined to be cyanidin 3-malonylglucoside-7-glucosyl-p-hydroxybenzoylglucoside-3’-p-hydroxybenzoylglucoside.