A new molecular mechanism of blue color development with protocyanin, a supramolecular pigment from cornflower, Centaurea cyanus

Tadao Kondo; Minoru Ueda; Minoru Isobe; Toshio Goto

doi:10.1016/S0040-4039(98)01858-9

A new molecular mechanism of blue color development with protocyanin, a supramolecular pigment from cornflower, Centaurea cyanus

Tadao Kondo, Minoru Ueda, Minoru Isobe, Toshio Goto

SCI - Chemistry

Nagoya University

Research output: Contribution to journal › Article › peer-review

69 Citations (Scopus)

Abstract

Protocyanin (1), a blue pigment of Centaurea cyanus, is composed of six molecules each of malonylflavone (2) and succinylcyanin (3), complexed with magnesium and ferric ions. The blue color of 1 is developed by an LMCT interaction between anthocyanin and ferric ion, rather than arising from the formation of a simple anhydrobase anion of the chromophore. The supramolecular structure of 1 was elucidated.

Original language	English
Pages (from-to)	8307-8310
Number of pages	4
Journal	Tetrahedron Letters
Volume	39
Issue number	45
DOIs	https://doi.org/10.1016/S0040-4039(98)01858-9
Publication status	Published - 1998 Nov 5

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10.1016/S0040-4039(98)01858-9

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abstract = "Protocyanin (1), a blue pigment of Centaurea cyanus, is composed of six molecules each of malonylflavone (2) and succinylcyanin (3), complexed with magnesium and ferric ions. The blue color of 1 is developed by an LMCT interaction between anthocyanin and ferric ion, rather than arising from the formation of a simple anhydrobase anion of the chromophore. The supramolecular structure of 1 was elucidated.",

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T1 - A new molecular mechanism of blue color development with protocyanin, a supramolecular pigment from cornflower, Centaurea cyanus

AU - Kondo, Tadao

AU - Ueda, Minoru

AU - Isobe, Minoru

AU - Goto, Toshio

PY - 1998/11/5

Y1 - 1998/11/5

N2 - Protocyanin (1), a blue pigment of Centaurea cyanus, is composed of six molecules each of malonylflavone (2) and succinylcyanin (3), complexed with magnesium and ferric ions. The blue color of 1 is developed by an LMCT interaction between anthocyanin and ferric ion, rather than arising from the formation of a simple anhydrobase anion of the chromophore. The supramolecular structure of 1 was elucidated.

AB - Protocyanin (1), a blue pigment of Centaurea cyanus, is composed of six molecules each of malonylflavone (2) and succinylcyanin (3), complexed with magnesium and ferric ions. The blue color of 1 is developed by an LMCT interaction between anthocyanin and ferric ion, rather than arising from the formation of a simple anhydrobase anion of the chromophore. The supramolecular structure of 1 was elucidated.

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JO - Tetrahedron Letters

JF - Tetrahedron Letters

IS - 45

ER -

A new molecular mechanism of blue color development with protocyanin, a supramolecular pigment from cornflower, Centaurea cyanus

Abstract

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