The invention relates to phenoxy derivatives with glycosidically bound sugar moieties, pharmaceutical compositions containing such compounds, uses of such compounds and compositions, and methods of making such compounds and pharmaceutical compositions.
Three of these compounds were further isolated, and their structures were elucidated by mass spectrometry and 1H and 13C nuclearmagneticresonance using one- and two-dimensional techniques (heteronuclear single-quantum coherence and heteronuclear multiple-bond correlation). The calculation of the proton and carbon shifts caused by sulfation allowed for the assignment of the position of the sulfate
A synthetic approach to the generation of quercetin sulfates and the detection of quercetin 3′-O-sulfate as a urinary metabolite in the rat
作者:Donald J.L. Jones、Rebekah Jukes-Jones、Richard D. Verschoyle、Peter B. Farmer、Andreas Gescher
DOI:10.1016/j.bmc.2005.07.021
日期:2005.12
that had received quercetin (1.9 g/kg po) yielded a single peak, which by comparison with the products of the reaction between quercetin and sulfur trioxide-N-triethylamine was identified as quercetin 3'-O-sulfate.
为了研究槲皮素的生物学效应,需要槲皮素代谢的真实产物作为标准。因此描述了硫酸槲皮素标准品的合成。使槲皮素与10倍摩尔过量的三氧化硫-N-三乙胺反应,并通过HPLC和质谱分析产物。鉴定出四个单硫酸盐和三个二硫酸盐,并通过HPLC峰分离物的1H NMR光谱分析得出结构推断。分析接受槲皮素(1.9 g / kg po)的大鼠的尿液产生一个峰,与槲皮素和三氧化硫-N-三乙胺之间的反应产物相比,该峰被鉴定为槲皮素3'-O-硫酸盐。
Increasing the bioavailability of hydroxycinnamic acids
申请人:Nestec S.A.
公开号:EP2596704A1
公开(公告)日:2013-05-29
The present invention generally relates to the field of nutrition, health and wellness. For example, the present invention relates to hydroxycinnamic acids and their health benefits. The present invention discloses compositions that allow increasing the bioavailability and/or bioefficacy of hydroxycinnamic acids. According to the invention, this can be achieved by co-administering at least one flavonoid and/or its glycoside conjugate with hydroxycinnamic acids.
Preparations of glycan therapeutics, pharmaceutical compositions and medical foods thereof, optionally comprising micronutrients, polyphenols, prebiotics, probiotics, or other agents are provided and methods of making same. Also provided are methods of using said gycan therapeutics, e.g. for the modulation of human gastrointestinal microbiota and to treat dysbioses.