cas 17238-05-0, Dihydrodaidzein | Articles data

Articles about 17238-05-0Total 12 be found

Biotransformation of daidzein to equol by crude enzyme from Asaccharobacter celatus AHU1763 required an anaerobic environment
Asaccharobacter celatus AHU1763 is a Gram-positive, obligate anaerobic, non-spore forming, rod-shaped bacteria that was successfully isolated from rat cecal content. Daizein was converted to equol via dihydrodaidzein by this bacterium. A crude enzyme that converted daidzein to dihydrodaidzein was detected mainly in the culture supernatant. The ability of this enzyme dropped after the culture supernatant was exposed to a normal atmospheric environment for even 5 min. Furthermore, the enzyme responsible for changing dihydrodaidzein to equol was detected mainly in the cell debris, which required anaerobic conditions for its activity.
Thawornkuno, Charin,Tanaka, Michiko,Sone, Teruo,Asano, Kozo
p. 1435 - 1438
(2009)
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Structure–activity relationship of phytoestrogen analogs as ERα/β agonists with neuroprotective activities
A set of isoflavononid and flavonoid analogs was prepared and evaluated for estrogen receptor α (ERα) and ERβ transactivation and anti-neuroinflammatory activities. Structure–activity relationship (SAR) study of naturally occurring phytoestrogens, their metabolites, and related isoflavone analogs revealed the importance of the C-ring of isoflavonoids for ER activity and selectivity. Docking study suggested putative binding modes of daidzein 2 and dehydroequol 8 in the active site of ERα and ERβ, and provided an understanding of the promising activity and selectivity of dehydroequol 8. Among the tested compounds, equol 7 and dehydroequol 8 were the most potent ERα/β agonists with ERβ selectivity and neuroprotective activity. This study provides knowledge on the SAR of isoflavonoids for further development of potent and selective ER agonists with neuroprotective potential.
Cho, Hye Won,Gim, Hyo Jin,Li, Hua,Subedi, Lalita,Kim, Sun Yeou,Ryu, Jae-Ha,Jeon, Raok
p. 99 - 105
(2021/01/06)

PRODUCTION METHOD OF OPTICALLY ACTIVE 3-SUBSTITUTED CHROMAN-4-OL COMPOUND
PROBLEM TO BE SOLVED: To provide a versatile and highly productive production method of an optically active 3-substituted chroman-4-ol compound. SOLUTION: A production method of an optically active 3-substituted chroman-4-ol compound includes performing a reduction reaction of a 3-substituted chroman-4-one compound in the presence of a metal complex represented by formula (I) (in formula (I), M represents a group 8 transition metal or the like, each of R1 and R2 independently represents a hydrogen atom, a 1-6C alkyl group or the like, R3 represents a 1-6C alkyl group or the like, R4 represents a 1-6C alkyl group or the like, Ar represents benzene bonded with M via a π bond or the like, and X represents a carbonyloxy group or the like). COPYRIGHT: (C)2015,JPOandINPIT
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Paragraph 0076-0078

(2017/01/02)

Synthesis and anti-tumor activities of novel oxazinyl isoflavonoids
The design, synthesis and biological evaluation of a novel series of oxazinyl isoflavonoids is described. Several analogs were shown to exhibit growth inhibitory effects against SKOV-3, DU-145 and HL-60 human colon cancer cell lines with IC50 values in the micromolar range. The cellular potency of compounds 7e and 12h were found to have greater in vitro inhibitory activities than phenoxodiol, the parental compound currently in late-stage clinical trials for the treatment of cancer. The results shown are suitable for further lead optimization.
Wang, Dun,Hou, Like,Wu, Lirong,Yu, Xin
scheme or table
p. 513 - 520
(2012/05/05)

ISOFLAVONOID COMPOUNDS AND METHODS FOR THE TREATMENT OF CANCER
Provided herein is a pharmaceutical composition comprising at least one isoflavonoid. Also provided herein are methods of treating cancer, sensitizing cancer cells, and inducing apoptosis in cancer cells by administering such compositions.
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Page/Page column 35; 37

(2012/05/20)

Synthesis of various kinds of isoflavones, isoflavanes, and biphenyl- ketones and their 1,1-diphenyl-2-picrylhydrazyl radical-scavenging activities
Forty-eight kinds of isoflavones (8), thirty-one isoflavanes (9), and forty-seven biphenyl-ketones (10, 10') were synthesized from eleven kinds of substituted phenols (11) and six phenylacetic acids (12). Among them, seventy-five compounds are new. The radical scavenging activities of these compounds were evaluated using 1,1- diphenyl-2-picrylhydrazyl (DPPH) at pH 6.0. We found that thirty-nine out of forty-three compounds having a catechol moiety on either the A- or the B-ring exhibited a high activity (ED50=12-54 μM) similar to that of catechin. In these cases, the remaining part of their structure seemed to have little effect on their activity. Many 6- or 8-hydroxyisoflavanes (9E-I) and their biphenyl-ketone derivatives (10E-H) also showed a high activity (ED50=50=26-32 μM). This study suggests that natural isoflavones have the possibilities of exhibiting antioxidant activities through the hydroxylation at the C6-, C8-, or C3'-position or the formation of the isoflavanes (9) and/or the biphenyl-ketone derivatives (10') by metabolism or biotransformation.
Goto, Hideyuki,Terao, Yoshiyasu,Akai, Shuji
scheme or table
p. 346 - 360
(2009/12/27)

Production of isoflavone derivatives
Methods for the hydrogenation of isoflavones are described which provide access to workable quantities of isoflavan-4-ols, isoflav-3-enes, and isoflavans. The isoflavone derivatives can be obtained in high purity and in near quantitative yields whilst employing pharmaceutically acceptable reagents and solvents.
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Page/Page column 14

(2008/06/13)

Experimental and DFT 1H NMR study of conformational equilibria in trans-4′,7-dihydroxyisoflavan-4-ol and trans-isoflavan-4-ol
The solution-state conformational equilibria of trans-4′ ,7-dihydroxyisoflavan-4-ol (1) and transisoflavan-4-ol (2) were assessed based on the temperature dependence of their vicinal coupling constants J H-2α,H-3 and JH-3,H-4 in comp
Pihlaja, Kalevi,Taehtinen, Petri,Klika, Karel D.,Jokela, Tuija,Salakka, Auli,Waehaelae, Kristiina
p. 6864 - 6869
(2007/10/03)

The Synthesis, Structure, and Anticancer Activity of cis- and trans-4',7-Dihydroxyisoflavan-4-ols
cis-4',7-Dihydroxyisoflavan-4-ol (4) and trans-4',7-dihydroxyisoflafan-4-ol (5), two proposed metabolites of daidzein (4',7-dihydroxyisoflavone), have been synthesized and fully characterized for the first time.The vicinal coupling constants of the pyran
Waehaelae, Kristiina,Koskimies, Jorma K.,Mesilaakso, Markku,Salakka, Auli K.,Leino, Tero K.,Adlercreutz, Herman
p. 7690 - 7693
(2007/10/03)

HYDROGEN TRANSFER REDUCTION OF ISOFLAVONES
Hydrogen transfer reduction of isoflavones using ammonium formate and palladium charcoal provides an easy access to polyoxyisoflavanones and also to isoflavan-4-ols without the need for protection of the hydroxy groups.Optimized reaction conditions for im
Waehaelae, K.,Hase, T. A.
p. 183 - 186
(2007/10/02)

Synthesis of (+/-)-Sytivanone and (+/-)-Dihydrodaidzein
The title plant products (5a and 5d) have been synthesised from the corresponding desoxybenzoins (1a and 1d) in nearly 50percent yields in three steps, viz. (i) reaction with ethoxymethyl chloride, (ii) cyclisation of the resulting carbinols (3a and 3b),
Jain, Amolak C.,Nayyar, Naresh K.
p. 136 - 139
(2007/10/02)