63181-13-5

Basic information

• Product Name: 1β-Hydroxy VitaMin D3
• Synonyms: 1β-Calcidol;(1R,3R,Z)-5-((E)-2-((1R,7aR)-7a-Methyl-1-((R)-6-Methylheptan-2-yl)dihydro-1H-inden-4(2H,5H,6H,7H,7aH)-ylidene)ethylidene)-4-Methylenecyclohexane-1,3-diol;IMpurity B of Alfacalcidol;(1R,3R,Z)-5-((E)-2-((1R,3aS,7aR)-7a-methyl-1-((R)-6-methylheptan-2-yl)hexahydro-1H-inden-4(2H)-ylidene)ethylidene)-4-methylenecyclohexane-1,3-diol;Alfacalcidol Impurity B
• CAS NO: 63181-13-5
• Molecular Formula: C₂₇H₄₄O₂
• Molecular Weight: 400.63706
• Product Categories: Chiral Reagents;Intermediates & Fine Chemicals;Metabolites & Impurities;Pharmaceuticals
• Mol File: 63181-13-5.mol
• Article Data: 5

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 1β-Hydroxy VitaMin D3(CAS DataBase Reference)
• NIST Chemistry Reference: 1β-Hydroxy VitaMin D3(63181-13-5)
• EPA Substance Registry System: 1β-Hydroxy VitaMin D3(63181-13-5)

Safety Data

• Hazardous Substances Data: 63181-13-5(Hazardous Substances Data)

Usage

Uses

An inactive isomeric impurity of Alphacalcidol (A524000).

Upstream product

• 86307-24-6 (1S,5R)-5-(tert-Butyl-dimethyl-silanyloxy)-3-[2-[(1R,3aS)-1-((R)-1,5-dimethyl-hexyl)-7a-methyl-octahydro-inden-(4E)-ylidene]-eth-(Z)-ylidene]-2-methylene-cyclohexanol 
• 67-97-0 vitamin D₃ 
• 67657-73-2 (1S,6R)-3-deoxy-1-hydroxy-6-methoxy-3,5-cyclo-5,6-dihydrovitamin D₃ 
• 86307-24-6 (1S,5R)-5-(tert-Butyl-dimethyl-silanyloxy)-3-[2-[(1R,3aS)-1-((R)-1,5-dimethyl-hexyl)-7a-methyl-octahydro-inden-(4E)-ylidene]-eth-(E)-ylidene]-2-methylene-cyclohexanol 
• 87649-55-6 tert-Butyl-{(S)-3-[2-[(1R,3aS)-1-((R)-1,5-dimethyl-hexyl)-7a-methyl-octahydro-inden-(4E)-ylidene]-eth-(E)-ylidene]-4-methylene-cyclohexyloxy}-dimethyl-silane 
• 67-97-0 (5E)-cholecalciferol 
• 67-97-0 cholecalciferol 
• 71726-02-8 (S)-3-[(R)-1-((R)-1,5-Dimethyl-hexyl)-7a-methyl-octahydro-inden-(4E)-ylidenemethyl]-2,2-dioxo-2,3,4,5,6,7-hexahydro-1H-2λ⁶-benzo[c]thiophen-5-ol 

Downstream Products

• 41294-56-8 1α-hydroxyvitamin D3 
• 66791-71-7 1,25-Dihydroxyvitamin D3 
• 112670-85-6 (1R,3aS,7aR)-4-[2-[(3S,5R)-3,5-Bis-(tert-butyl-dimethyl-silanyloxy)-2-methylene-cyclohex-(E)-ylidene]-eth-(E)-ylidene]-1-((R)-1,5-dimethyl-hexyl)-7a-methyl-octahydro-indene 

Relevant articles and documents

Improved preparation method of alfacalcidol

The invention discloses an improved preparation method of alfacalcidol. The preparation method is characterized by comprising the following steps: starting from 1 alpha-OH-3,5-cyclized vitamin D3, directly carrying out ring-opening hydrolysis without an acetate intermediate to obtain alfacalcidol and a trans-isomer thereof, carrying out a Diels-Alder reaction, selectively reacting with the trans-isomer, and carrying out column chromatography separation or methyl formate recrystallization to obtain a pure alfacalcidol product. The method is simple and convenient to operate, mild in reaction condition and high in total yield, and is suitable for large-scale synthesis of products.

Method for preparing high-purity 1 alpha-hydroxyvitamin D3

The invention discloses a method for preparing high-purity 1 alpha-hydroxyvitamin D3. The method comprises the following steps of (1) carrying out esterification; (2) carrying out cyclization; (3) carrying out oxidization; (4) carrying out ring opening; (5) carrying out photochemical isomerisation; (6) utilizing molecular sieve zeolite to carry out chiral purification and treatment on crude 1 alpha-hydroxyvitamin D3, and finally, carrying out recrystallization with an ethyl acetate-n-hexane system to obtain the high-purity 1 alpha-hydroxyvitamin D3. According to the method, by using a liposoluble solvent to replace pyridine and using an organic alkaline catalyst, under the condition with equivalent yield, the reaction temperature is changed from low temperature to room temperature, the reaction time is shortened, the pyridine with large pungent smell is avoided from using, and thus the economic practicability of the technology is greatly improved.

A direct, regio- and stereoselective 1α-hydroxylation of (5E)-calciferol derivatives

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