Previtamin D3: Difference between revisions
Previtamin D3
Created page with "{{DISPLAYTITLE:Previtamin D<sub>3</sub>}} {{Chembox | Name = Previtamin D<sub>3</sub> | ImageFile = Previtamin D3.svg | ImageFile_Ref = {{Chemboximage|correct|??}} | ImageName = Stereo skeletal formula of previtamin D<sub>3</sub> ((1R)-1-ol, (Z)-en, (1R,3aR,7aR)-7a-meth,-1-hept,-3a-hydro, (2R)-2-yl) | IUPACName = (3''S'',6''Z'')-9,10-Secocholesta-5(10),6,8-trien-3-ol | SystematicName = (1''S'')-4-Methyl-3-[(''Z'')-2-<nowiki/>{(1''R'',3a''R'',7a''R'')-7a-methyl-1-[(2''R''..." |
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'''Previtamin D<sub>3</sub>''' is an intermediate in the production of [[cholecalciferol]] ([[vitamin D]]<sub>3</sub>). | '''Previtamin D<sub>3</sub>''' is an intermediate in the production of [[cholecalciferol]] ([[vitamin D]]<sub>3</sub>). | ||
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It is formed by the action of [[UV light]], most specifically UVB light of wavelengths between 295 and 300 nm, acting on [[7-dehydrocholesterol]] in the [[epidermis_(skin)|epidermal layers]] of the skin. | It is formed by the action of [[UV light]], most specifically UVB light of wavelengths between 295 and 300 nm, acting on [[7-dehydrocholesterol]] in the [[epidermis_(skin)|epidermal layers]] of the skin. | ||
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The B ring of the [[steroid]] nucleus structure is broken open, making a [[secosteroid]]. This then undergoes spontaneous [[isomerization]] into cholecalciferol, the [[prohormone]] of the active form of vitamin D, [[calcitriol]]. | The B ring of the [[steroid]] nucleus structure is broken open, making a [[secosteroid]]. This then undergoes spontaneous [[isomerization]] into cholecalciferol, the [[prohormone]] of the active form of vitamin D, [[calcitriol]]. | ||
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The synthesis of previtamin D<sub>3</sub> is blocked effectively by [[sunscreens]]. | The synthesis of previtamin D<sub>3</sub> is blocked effectively by [[sunscreens]]. | ||
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== Interactive pathway map== | == Interactive pathway map== | ||
{{VitaminDSynthesis_WP1531|highlight=Previtamin_D3}} | {{VitaminDSynthesis_WP1531|highlight=Previtamin_D3}} | ||
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{{Vitamin}} | {{Vitamin}} | ||
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{{二次利用|date=20 November 2023}} | {{二次利用|date=20 November 2023}} | ||
[[Category:Vitamin D]] | [[Category:Vitamin D]] | ||
[[Category:Secosteroids]] | [[Category:Secosteroids]] | ||
[[Category:Indanes]] | [[Category:Indanes]] | ||
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Latest revision as of 19:23, 11 April 2024
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| Names | |
|---|---|
| IUPAC name
(3S,6Z)-9,10-Secocholesta-5(10),6,8-trien-3-ol
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| Systematic IUPAC name
(1S)-4-Methyl-3-[(Z)-2-{(1R,3aR,7aR)-7a-methyl-1-[(2R)-6-methylheptan-2-yl]-2,3,3a,6,7,7a-hexahydro-1H-inden-4-yl}ethen-1-yl]cyclohex-3-en-1-ol | |
| Other names
Previtamin D3
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| EC Number |
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| MeSH | Previtamin+D(3) |
PubChem CID
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| UNII | |
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| Properties | |
| C27H44O | |
| Molar mass | 384.648 g·mol−1 |
Previtamin D3 is an intermediate in the production of cholecalciferol (vitamin D3).
It is formed by the action of UV light, most specifically UVB light of wavelengths between 295 and 300 nm, acting on 7-dehydrocholesterol in the epidermal layers of the skin.
The B ring of the steroid nucleus structure is broken open, making a secosteroid. This then undergoes spontaneous isomerization into cholecalciferol, the prohormone of the active form of vitamin D, calcitriol.
The synthesis of previtamin D3 is blocked effectively by sunscreens.
Interactive pathway map
Click on genes, proteins and metabolites below to link to respective articles. [§ 1]
- ↑ The interactive pathway map can be edited at WikiPathways: "VitaminDSynthesis_WP1531".
 | この記事は、クリエイティブ・コモンズ・表示・継承ライセンス3.0のもとで公表されたウィキペディアの項目Previtamin D3(20 November 2023編集記事参照)を素材として二次利用しています。 Item:Q21939  |