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Note | Regular issue | Vol 63, No. 6, 2004, pp.1449-1454
Published online, 16th April, 2004
DOI: 10.3987/COM-04-10076
An Acylated Pelargonidin 3-Sophoroside from the Pale-brownish Red Flowers of Ipomoea nil

Kenjiro Toki, Norio Saito, Yasumasa Morita, Atsushi Hoshino, Shigeru Iida, Atsushi Shigihara, and Toshio Honda*

*Institute of Medical Chemistry, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan

Abstract

A structurally new acylated anthocyanin was isolated from the pale-brownish red flowers of a duskish-2 mutant in the Japanese morning glory (Ipomoea nil or Pharbitis nil) as a major pigment together with a known anthocyanin. The new pigment was determined as pelargonidin 3-O-[2-O-(6-O- (trans-3-O-(β-glucopyranosyl)caffeoyl)-β-glucopyranosyl)-β-glucopyranoside], and the known anthocyanin was identified to be pelargonidin 3-sophoroside.