title: Anthocyanins from the flowers of Nagai line of Japanese garden Iris (Iris ensata).
abstract: Six anthocyanins were isolated from the flowers of the Nagai line of Iris ensata Thunb. They were identified as petunidin and malvidin 3-O-beta-[(4"'-Z-p-coumaroyl-alpha-rhamnopyranosyl)-(1-->6)-beta-glucopyranoside]-5-O-beta-glucopyranosides (1 and 3) and their E-forms (2 and 4), and petunidin and malvidin 3-O-rutinoside-5-O-glucosides (5 and 6). Though the E-form of petunidin 3-O-[(4"'-p-coumaroylrhamnosyl)-(1-->6)-glucoside]-5-O-glucoside has been reported, its Z-form was found for the first time. The presence of Z- and E-forms of malvidin 3-O-[(4'''-p-coumaroylrhamnosyl)-(1-->6)-glucoside]-5-O-glucoside is also reported for the first time. Fifty-one cultivars of Nagai line and their wild form (I. ensata var. spontanea) were divided into four anthocyanin patterns, i.e. 1) the presence of 1-4, 2) the presence of 2 and 4, 3) the presence of 5 and 6, and 4) no anthocyanin.
authors.forename: Kaori
authors.initials: K
authors.lastname: Kitahara
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Murai
authors.forename: Sang Woo
authors.initials: SW
authors.lastname: Bang
authors.forename: Junichi
authors.initials: J
authors.lastname: Kitajima
authors.forename: Tsukasa
authors.initials: T
authors.lastname: Iwashina
authors.forename: Yukio
authors.initials: Y
authors.lastname: Kaneko
mesh_terms: D000872:Anthocyanins / Q000145:classification / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid; D035264:Flowers / Q000737:chemistry; D031323:Iris Plant / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy
chemical_list: D000872:Anthocyanins