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

Research output: Contribution to journalArticlepeer-review

62 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 languageEnglish
Pages (from-to)8307-8310
Number of pages4
JournalTetrahedron Letters
Volume39
Issue number45
DOIs
Publication statusPublished - 1998 Nov 5
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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