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.
COMPOSITIONS INCLUDING ANTHOCYANIN OR ANTHOCYANIDIN FOR THE PREVENTION OR TREATMENT OF ARTICULAR CARTILAGE-ASSOCIATED CONDITIONS
申请人:Johnson Lanny L.
公开号:US20100196331A1
公开(公告)日:2010-08-05
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.
STABILIZATION OF HYDROXYLAMINE CONTAINING SOLUTIONS AND METHOD FOR THEIR PREPARATION
申请人:Lee Wai Mun
公开号:US20090112024A1
公开(公告)日:2009-04-30
The invention relates to the use of amidoximes for prevention of or stabilization of hydroxylamine compounds against undesired decomposition.
本发明涉及将酰胺肟用于预防或稳定羟基胺化合物,防止其不受控分解。
Structure assignment and H/D-exchange behavior of several glycosylated polyphenols
作者:Andreas H. Franz、Ilona Serebnitskaya、Gurbir Gudial、Christopher Wallis
DOI:10.3998/ark.5550190.p008.583
日期:——
The NMR-structures of six polyphenols, resveratrol (1), (-)-epicatechin (2), pelargonidin chloride (3), cyanidin chloride (4), cyanin chloride (5), and keracyanin chloride (6), were fully assigned. For the glycosylatedpolyphenols 5 and 6, the three-dimensional solution structure and long-range HC-coupling constants across the glycosidic bond were measured. Satisfactory fit to standard Karplus-equations
(2S,3R)- and (2S,3S)-flavan-3-ols. At pH 7.5 and 30°C, the first hydride transfer to anthocyanidin is irreversible, and no intermediate is released during catalysis. ANR reverse activity was assessed in the presence of excess NADP+. Analysis of products by reverse phase and chiral phase HPLC demonstrates that ANR acts as a flavan-3-ol C3-epimerase under such conditions, but this is only observed with