3-α,12-α-Dihydroxy-5-β-cholan-24-sure

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Warnung

• Gefahrenhinweise

  H302：Gesundheitsschädlich bei Verschlucken.

Deoxycholic acid Chemische Eigenschaften,Einsatz,Produktion Methoden

• R-Sätze Betriebsanweisung:

  R22:Gesundheitsschädlich beim Verschlucken.
  R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
  R37:Reizt die Atmungsorgane.
  R20/21/22:Gesundheitsschädlich beim Einatmen,Verschlucken und Berührung mit der Haut.

• S-Sätze Betriebsanweisung:

  S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
  S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
  S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
  S22:Staub nicht einatmen.

• Beschreibung

  Deoxycholic acid sodium salt, which is a secondary bile acid and the metabolite of intestinal bacteria, provides a nonsurgical treatment to significantly reduce submental fat in adults via injection directly into moderate-to-severe fatty tissue below the neck. When injected into fatty tissue, deoxycholic acid helps destroy fat cells. Although deoxycholic acid has many applications beyond human health, the application as a dyslipidemia drug was licensed to Kythera from Los Angeles Biomedical Institute at Harbor-UCLA Medical Center in 2007. Allergan acquired Kythera recently in 2015.

• Chemische Eigenschaften

  white powder

• Verwenden

  antiinflammatory, immunomodulator, antineoplastic

• Verwenden

  A Cholic Acid (C432600) derivative used as a component in cell lysis buffers.

• Verwenden

  Deoxycholic acid has been used in a modified procedure to recover 40-80% of a protein from a 1 μg/mL solution. It forms complexes with fatty acid. Used as an emulsifying agent in food, a precursor in the synthesis of cortisone, and a gallbladder stimulant. It has been used to study assess how physiological concentrations of ursodeoxycholic acid (UDCA) vs. deoxycholic acid (DCA) affect barrier function in mouse intestinal tissue. Deoxycholic acid has been used in a study to assess a pH-Responsive Mechanism of a Deoxycholic Acid and Folate Co-Modified Chitosan Micelle under Cancerous Environment. It has also been used in a study to investigate dose-dependent anti-inflammatory effect of ursodeoxycholic acid in experimental colitis.

• Definition

  ChEBI: Deoxycholic acid is a bile acid that is 5beta-cholan-24-oic acid substituted by hydroxy groups at positions 3 and 12 respectively. It has a role as a human blood serum metabolite. It is a bile acid, a dihydroxy-5beta-cholanic acid and a C24-steroid. It is a conjugate acid of a deoxycholate.

• Allgemeine Beschreibung

  This [TM="Certified Spiking Solution" is suitable for use as starting material in the preparation of linearity standards, calibrators, and controls in LC-MS/MS and GC/MS bile acid testing methods. Deoxycholic acid (DCA), also known as deoxycholate and cholanoic acid is a secondary bile acid that aids in the absorption of fats in the intestine. Mass spectrometry-based analysis of DCA is routinely performed in clinical diagnostic testing applications including neonatal testing of inborn errors of bile acid synthesis and differentiating among types of familial intrahepatic cholestasis.

• Biochem/physiol Actions

  Deoxycholic acid, due to its amphiphilicity, significantly helps to solubilize, emulsify, and absorb fat, vitamins, and cholesterol in the body. High levels of intestinal deoxycholic acid might cause colorectal cancer by inducing oxidative stress and leading to DNA damage. It acts as an oncogene and pro-tumor factor.

• Sicherheitsprofil

  Poison by intraperitoneal route. Moderately toxic by ingestion and intravenous routes. Questionable carcinogen with experimental tumorigenic data. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes.

• Synthese

  The synthesis started from the commercially available 9- hydroxyandrost-4-ene-3,17-dione (114).85 Hydrogenation of 114 gave the saturated 5|?-dione 115 in 85% yield. Alcohol 115 was then dehydrated with H2SO4 in CH2Cl2 to provide 5|?-androst-9(11)-ene-3,17-dione 116 in 95% yield as off-white solid, and this was followed by selective reduction with LiAlH(O-t-Bu)3 to afford (3|á,5|?)-3-hydroxyandrost- 9(11)-en-17-one (117). The crude ketone 117 was submitted to a Wittig reaction with triphenylethylphosphonium bromide in the presence of potassium t-butoxide in THF to yield (3|á,5|?,17E)-pregna-9(11),17-dien-3-ol (118). The crude alcohol 118 was acetylated with Ac2O in the presence of DMAP and Et3N to yield prenyl acetate 119 in 64% across the threestep sequence. Compound 119 was reacted with methyl acrylate in the presence of EtAlCl2 to facilitate conjugate addition and subsequent tertiary carbocation elimination to afford adduct 120, and this resulting olefin was hydrogenated to selectively saturate the cyclopentenyl double bond, resulting in steroid 121 in 85% yield from 119. The remaining alkene 121 then underwent allylic oxidation with tert-butyl hydrogen peroxide and 10% NaOCl aqueous solution in EtOAc to give enone 122, and this material was then hydrogenated over 10% Pd/C in EtOAc to afford the saturated ketone 123. Next, the ketone within 123 was selectively reduced with LiAlH(O-t-Bu)3 in THF to give the 12|á-hydroxy precursor 124 in excellent yield. Finally the remaining methyl ester 124 was hydrolyzed with 20% NaOH aqueous solution in THF/MeOH and acidified with 4 M HCl to give deoxycholic acid (XV) in 99% yield as a white solid.

  

• läuterung methode

  Reflux the acid with CCl4 (50mL/g), filter, evaporate under vacuum at 25o, recrystallise the residue from acetone and dry it under vacuum at 155o [Trenner et al. J Am Chem Soc 76 1196 1954]. A solution of (cholic acid-free) material (100mL) in 500mL of hot EtOH is filtered, evaporate it to less than 500mL on a hot plate, and pour it into 1500mL of cold diethyl ether. The precipitate, filtered off by suction, is crystallised twice from 1-2 parts of absolute EtOH, to give an alcoholate, m 118-120o, which is dissolved in EtOH (100mL for 60g) and poured into boiling water. After boiling until free of the EtOH, the precipitate is filtered off, dried, ground and dried to constant weight in vacuo [Sobotka & Goldberg Biochem J 26 555 1932]. Deoxycholic acid is also freed from fatty acids and cholic acid by silica gel chromatography and elution with 0.5% acetic acid in ethyl acetate [Tang et al. J Am Chem Soc 107 4058 1985]. It can also be recrystallised from butanone. Its solubility in H2O at 15o is 0.24g/L, but in EtOH it is 22.07g/L. [Beilstein 10 IV 1608.]

Deoxycholic acid Upstream-Materialien And Downstream Produkte

3-α,12-α-Dihydroxy-5-β-cholan-24-sure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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