220930-96-1Relevant articles and documents
Synthesis of D6-daidzein
Rasku, Sirpa,Waehaelae, Kristiina
, p. 849 - 853 (2000)
Daidzein, an isoflavone abundant in soy, has various interesting biological properties that have been ascribed potential beneficial effects on human health. The study of these properties and effects of daidzein in general requires that an isotopically labeled reference compound is available for quantitative measurements. We report here the preparation of a deuterium labeled daidzein by acid catalyzed H/D exchange of aromatic protons using D3PO4·BF3/D2O as a deuterating reagent at 100°C. The product, [6,8,2',3',5',6'-D6]-daidzein, is isotopically pure with all D atoms chemically stable during the various extraction and purification steps of the ID/GC/MS/SIM quantitation procedure.
Synthesis of isoflavonoid deuterium labeled polyphenolic Phytoestrogens
Rasku, Sirpa,Waehaelae, Kristiina,Koskimies, Jorma,Hase, Tapio
, p. 3445 - 3454 (1999)
Deuteration methods are described for the synthesis of new stable deuterium labeled isoflavonoids, [8,3',5'-D3]-daidzein 4a, [8,3',5'-D3]- formononetin 4b, [2',3',5',6'-D4]-biochanin A 4c, [6,8,3',5'- D4]dihydrodaidzein 5a, [3,6,8,3',5'-D5]-dihydrodaidzein 5b, [3,2',3',5',6'- D5]-dihydrogenistein 5c and [2,4,8,10-D4]-coumestrol 6, using D3PO4·BF3/D2O as a deuteration reagent. Positions of deuterium labels and isotopic purities were determined by NMR and mass spectrometry. The relative of H/D exchange at the various aromatic sites is discussed.
Deuterated flavonoid compound and its preparation method
-
Paragraph 0111-0113, (2019/07/01)
The invention relates to a deuterated flavonoid compound and its preparation method, comprises the following steps: the flavonoid compounds, alkali and heavy water mixed, in an inert gas atmosphere for 90 °C under the above conditions the flavonoid compou
Expedient deuterolabeling of polyphenols in ionic liquids - DCl/D 2O under microwave irradiation
Hakala, Ullastiina,Waehaelae, Kristiina
, p. 5817 - 5819 (2008/02/09)
(Chemical Equation Presented) Postsynthetic regioselective aromatic ring H/D exchanges in polyphenolic compounds are rapidly performed in high yields and isotopic purities in ionic liquid-DCl/D2O under microwave irradiation. Other C-H bonds, in
Synthesis of deuterated isoflavone disulfates
Soidinsalo, Otto,Waehaelae, Kristiina
, p. 973 - 978 (2008/02/04)
Efficient synthesis of polydeuterated di-O-sulfates of three isoflavones, daidzein (1), genistein (2), glycitein (3), is described. The isoflavones were first deuterated with CF3COOD under microwave irradiation to yield daidzein-d6 (
Synthesis of the -Labelled Urinary Lignans, Enterolactone and Enterodiol, and the Phytoestrogen Daidzein and its Metabolites Equol and O-Demethylangolensin
Waehaelae, Kristiina,Maekelae, Taru,Baeckstroem, Reijo,Brunow, Goeta,Hase, Tapio
, p. 95 - 98 (2007/10/02)
Methods are described for the synthesis of enterolactone, -trans-2,3-bis(3-hydroxybenzyl)-γ-butyrolactone>, enterodiol, -2,3-bis(3-hydroxybenzyl)butane-1,4-diol>, diadzein, -7-hydroxy-3-(4-hydroxyphenyl)-4H-1-benzopyran-4-