Accession Number | HMDB00524 |
Common_Name | 5b-Cholestane-3a,7a,12a,25-tetrol |
Description | 5b-Cholestane-3a,7a,12a,25-tetrol is an intermediates in the bile acid synthetic pathway, and is secreted into the bile and urine following glucuronidation and does not undergo enterohepatic circulation. In cerebrotendinous xanthomatosis (CTX), a bile acid synthesis disorder caused by sterol 27-hydroxylase (CYP27) deficiency, early intermediates and cholestanol accumulate in a variety of tissues, and glucuronides of 25-hydroxylated bile alcohols are released in bile, blood, and urine. Bile acid synthesis from cholesterol is tightly regulated via a feedback mechanism mediated by the farnesoid X receptor (FXR), a nuclear receptor activated by bile acids. Synthesis via the classic pathway is initiated by a series of cholesterol ring modifications and followed by the side chain cleavage. The enhanced cholesterol 7a-hydroxylase (CYP7A1) expression in CYP27 deficiency may be the result of decreased flux of bile acids and bile alcohols into the liver, while production of FXR-activating 5b-Cholestane-3a,7a,12a,25-tetrol is increased. (PMID 15145977) |
Chemical_IUPAC_Name | (3R,5S,7R,8R,9S,10S,12S,13R,14S)-17-[(2R)-6-hydroxy-6-methylheptan-2-yl]-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-3,7,12-triol |
Chemical Formula | C27H48O4 |
Sample Concentration | Not Available |
Mass Value | Not Available |
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Manufacturer | Not Available |
Analyzer | Not Available |
Delivery | Not Available |
Ionization | Not Available |
Predicted 1H NMR Spectrum | Download |
Predicted 1H NMR Peaklist | Download |
Predicted 13C NMR Spectrum | Download |
Predicted 13C NMR Peaklist | Download |
Sample Concentration | Not Available |
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Mass Unit | Not Available |
Manufacturer | Not Available |
Frequency | Not Available |
1H NMR Spectrum | Not Available |
Sample Concentration | Not Available |
Mass Value | Not Available |
Mass Unit | Not Available |
Manufacturer | Not Available |
Frequency | Not Available |
13C NMR Spectrum | Not Available |
Low Energy Voltage | Not Available |
Low Energy Spectrum | Not Available |
Low Energy Peaklist | Not Available |
Medium Energy Spectrum | Not Available |
Hight Energy Spectrum | Not Available |