Structure of Muscariflavone A-C,Isolated from Purplish Blue Spicate Flower Petals of Muscari armeniacum

Abstract

From purplish-blue spicate flowers of muscari (Muscari armeniacum), three new glycosylated flavones, named muscariflavone A-C (1–3), were isolated, and their structures were determined using MS and NMR analyses. All of these flavones contained the apigenin chromophore, and three to four sugar linear-chains were attached at the 7-OH of apigenin. The mixture of muscarinin A, muscariflavone A-C and aluminum ions gave a stable purplish-blue color similar to that of the petals.

Keywords

Apigenin Glycosylflavone Muscariflavone A-C Spicate flower petals

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