
CasNo: 60133-18-8
Molecular Formula: C28H44O3
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Biochem/physiol Actions |
Ergocalciferol (vitamin D2) is activated in vivo by hydroxylation to 25-hydroxyergocalciferol and 1α,25-dihydroxycalciferol. Activated Vitamin D2 molecules may be used in a wide range of studies to assess their effects on functions such as immune function and calcium homeostasis. |
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Definition |
ChEBI: A hydroxycalciol that is vitamin D2 bearing additional hydroxy substituents at positions 1alpha and 25. |
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General Description |
1α,25-Dihydroxyvitamin D2?is an active form of vitamin D2. It is also known as ercalcitriol or 1α,25-dihydroxyergocalciferol. It was first isolated from mitochondria of chick kidney. |
InChI:InChI=1/C28H44O3/c1-18(9-10-19(2)27(4,5)31)24-13-14-25-21(8-7-15-28(24,25)6)11-12-22-16-23(29)17-26(30)20(22)3/h9-12,18-19,23-26,29-31H,3,7-8,13-17H2,1-2,4-6H3/b10-9+,21-11+,22-12-/t18-,19+,23-,24-,25+,26+,28-/m1/s1
Two synthetic routes to the nonnatural h...
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(22E)-5,7,22-Ergostatriene-1α,3β,25-trio...
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1α-[(tert-butyldimethylsilyl)oxy]-25-[(methoxymethyl)oxy]previtamin D2 tert-butyldimethylsilyl ether
ercalcitriol
| Conditions | Yield |
|---|---|
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With
ion-exchange resin AG 50W-X4;
In
methanol;
for 48h;
Ambient temperature;
in the dark;
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82% |
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With
AG50 WX4 resin; tetrabutyl ammonium fluoride;
Yield given. Multistep reaction;
1) THF, , 12 h, rt; 2) MeOH, rt, 5 h;
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aqueous potassium nitrate
(22E)-5,7,22-ergostatriene-1α,3β,25-triol
ercalcitriol
| Conditions | Yield |
|---|---|
|
In
tetrahydrofuran; ethanol; nitrogen;
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1R-<1α(1R*,2E,4S*),3aβ,7aα>-octahydro-1-<5-<(trimethylsilyl)oxy>-1,4,5-trimethyl-2-hexenyl>-7a-methyl-4H-inden-4-one
[(2Z)-2-[(3S,5R)-3,5-bis(tert-butyldimethylsilanyloxy)-2-methylenecyclohexylidene]ethyl]diphenylphosphine oxide
1α-[(tert-butyldimethylsilyl)oxy]-25-[(methoxymethyl)oxy]previtamin D2 tert-butyldimethylsilyl ether
previtamin D
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