- Triacylated peonidin 3-sophoroside-5-glucosides from the purple flowers of Moricandia ramburii Webb.
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Triacylated peonidin 3-sophoroside-5-glucosides were isolated from the purple flowers of Moricandia ramburii Webb. (Family: Brassicaceae), and determined to be peonidin 3-O-[2-O-(2-O-(trans-feruloyl)-glucosyl)-6-O-(trans-p- coumaroyl)-glucoside]-5-O-[6-O-(malonyl)-glucoside] (1), peonidin 3-O-[2-O-(2-O-(trans-feruloyl)-glucosyl)-6-O-(cis-p-coumaroyl)-glucoside] -5-O-[6-O-(malonyl)-glucoside] (2) and peonidin 3-O-[2-O-(2-O-(trans-sinapoyl)- glucosyl)-6-O-(trans-p-coumaroyl)-glucoside]-5-O-[6-O-(malonyl)-glucoside] (3), respectively, by chemical and spectroscopic methods. In addition, one known acylated cyanidin glycoside, cyanidin 3-O-[2-O-(2-O-(trans-feruloyl)-glucosyl)- 6-O-(trans-p-coumaroyl)-glucoside]-5-O-[6-O-(malonyl)-glucoside] (4), was also identified in the flowers. Peonidin glycosides have not been reported hitherto in floral tissues in to Brassicaceae.
- Tatsuzawa, Fumi,Ito, Kanako,Muraoka, Hiroki,Namauo, Toshiharu,Kato, Kazuhisa,Takahata, Yoshihito,Ogawa, Satoshi
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experimental part
p. 73 - 77
(2012/06/30)
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- COMPOSITIONS INCLUDING ANTHOCYANIN OR ANTHOCYANIDIN FOR THE PREVENTION OR TREATMENT OF ARTICULAR CARTILAGE-ASSOCIATED CONDITIONS
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Methods of treating an arthritic joint of a subject, including administering a pharmaceutical composition by injection into the arthritic joint, wherein the composition includes an anthocyanin or anthocyanidin, glucose, and a pharmaceutically acceptable carrier.
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- Process for synthesising anthocyanidins
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A process is provided for producing anthocyanidins of formula III wherein m represents an integer from 1 to 3, and X represents an anion, which involves reducing a protected flavonol of formula where each R4 represents a C1#SB-#10, hydrocarbyl group and m is 1 to 3 and converting OR4 groups to hydroxy groups.
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- Synthesis of Condensed Tannins. Part 2. Synthesis by Photolytic Rearrangement, Stereochemistry, and Circular Dichroism of the First 2,3-cis,3,4-cis-4-Arylflavan-3-ols
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Photolytic rearrangements of those 2,3-trans-3,4-trans- and 2,3-trans-3,4-cis-4-arylflavan-3-ols in which the nucleophilicity of D-ring (4-aryl group) functionality exceeds that of the A-ring, provide the first access to 2,3-cis-3,4-cis-diastereoisomers.The circular dichroism of these new isomers is at variance with the proposed general rule for assessing the absolute configuration at C-4.In terms of the aromatic quadrant rule such discrepancies correlate with deviations from the preferred C-ring conformations.
- Westhuizen, Jan H. van der,Ferreira, Daneel,Roux, David G.
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p. 1220 - 1226
(2007/10/02)
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