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22R-Hydroxycholesterol

From Wikipedia, the free encyclopedia
22R-Hydroxycholesterol
Names
IUPAC name
(22R)-Cholest-5-ene-3β,22-diol
Systematic IUPAC name
(1R,3aS,3bS,7S,9aR,9bS,11aS)-1-[(2S,3R)-3-Hydroxy-6-methylheptan-2-yl]-9a,11a-dimethyl-2,3,3a,3b,4,6,7,8,9,9a,9b,10,11,11a-tetradecahydro-1H-cyclopenta[a]phenanthren-7-ol
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
UNII
  • InChI=1S/C27H46O2/c1-17(2)6-11-25(29)18(3)22-9-10-23-21-8-7-19-16-20(28)12-14-26(19,4)24(21)13-15-27(22,23)5/h7,17-18,20-25,28-29H,6,8-16H2,1-5H3/t18-,20-,21-,22+,23-,24-,25?,26-,27+/m0/s1
    Key: RZPAXNJLEKLXNO-UKNNTIGFSA-N
  • InChI=1/C27H46O2/c1-17(2)6-11-25(29)18(3)22-9-10-23-21-8-7-19-16-20(28)12-14-26(19,4)24(21)13-15-27(22,23)5/h7,17-18,20-25,28-29H,6,8-16H2,1-5H3/t18-,20-,21-,22+,23-,24-,25?,26-,27+/m0/s1
    Key: RZPAXNJLEKLXNO-UKNNTIGFBU
  • O[C@@H]4C/C3=C/C[C@@H]1[C@H](CC[C@]2([C@H]1CC[C@@H]2[C@H](C)C(O)CCC(C)C)C)[C@@]3(C)CC4
Properties
C27H46O2
Molar mass402.653 g/mol
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa).
Chemical compound

22R-Hydroxycholesterol, or(3β)-cholest-5-ene-3,22-diol is anendogenous,metabolic intermediate in thebiosynthesis of thesteroid hormones fromcholesterol.[1][2] Cholesterol ((3β)-cholest-5-en-3-ol) ishydroxylated bycholesterol side-chain cleavage enzyme (P450scc) to form 22R-hydroxycholesterol, which is subsequently hydroxylated again by P450scc to form20α,22R-dihydroxycholesterol, and finally the bond between carbons 20 and 22 iscleaved by P450scc to formpregnenolone ((3β)-3-hydroxypregn-5-en-20-one),[1][2] theprecursor to the steroid hormones.

It is anagonist of theliver X receptor.

See also

[edit]

References

[edit]
  1. ^abCHAUDHURI AC, HARADA Y, SHIMIZU K, GUT M, DORFMAN RI (March 1962)."Biosynthesis of pregnenolone from 22-hydroxycholesterol".The Journal of Biological Chemistry.237 (3):703–4.doi:10.1016/S0021-9258(18)60359-X.PMID 13878470.
  2. ^abHume R, Kelly RW, Taylor PL, Boyd GS (May 1984)."The catalytic cycle of cytochrome P-450scc and intermediates in the conversion of cholesterol to pregnenolone".European Journal of Biochemistry.140 (3):583–91.doi:10.1111/j.1432-1033.1984.tb08142.x.PMID 6723652.
Mevalonate pathway
toHMG-CoA
Ketone bodies
toDMAPP
Geranyl-
Carotenoid
Non-mevalonate pathway
ToCholesterol
FromCholesterol
toSteroid hormones
Nonhuman
ToSitosterol
ToErgocalciferol
Precursors
Corticosteroids
Glucocorticoids
Mineralocorticoids
Sex steroids
Androgens
Estrogens
Progestogens
Neurosteroids
Others
FXRTooltip Farnesoid X receptor andLXRTooltip liver X receptormodulators
FXRTooltip Farnesoid X receptor
LXRTooltip Liver X receptor


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