(Delphinidin 3-gentiobiosyl) (apigenin 7-glucosyl) malonate from the flowers of Eichhornia crassipes
| Autor: | Kenjiro Toki, Ken Iimura, Toshio Honda, Norio Saito, Takanori Suzuki |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Eichhornia crassipes
Magnetic Resonance Spectroscopy Stereochemistry Molecular Sequence Data Plant Science Spectrometry Mass Fast Atom Bombardment Horticulture Photochemistry Biochemistry Anthocyanins chemistry.chemical_compound Pigment Carbohydrate Conformation Apigenin Molecular Biology chemistry.chemical_classification biology food and beverages Glycoside General Medicine Plants biology.organism_classification carbohydrates (lipids) Malonate Carbohydrate Sequence chemistry visual_art visual_art.visual_art_medium Chromatography Thin Layer Carbohydrate conformation Delphinidin Cotton effect |
| Zdroj: | Phytochemistry. 36:1181-1183 |
| ISSN: | 0031-9422 |
| DOI: | 10.1016/s0031-9422(00)89634-x |
| Popis: | A novel acylated delphinidin glycoside was isolated from the blue-purple flowers of Eichhornia crassipes as a major pigment, and was identified as (6'''-O-(delphinidin 3-O-(6''-O-(beta-D-glucopyranosyl)-beta-D-glucopyranosyl))) (6''-O-(apigenin 7-O-(beta-D-glucopyranosyl)))malonate by spectral methods. The three dimensional structure of this pigment was suggested from the observation of the negative Cotton effect at lambda max 535 nm that delphinidin (chromophore) and apigenin (co-pigment) occupy a folding conformation as a binary complex. |
| Databáze: | OpenAIRE |
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