157750-01-1

Upstream product

• 67657-80-1 (7E)-(1S,3R,5R,6R)-6-methoxy-3,5-cyclo-9,10-seco-7,10⁽¹⁹⁾-cholestadiene-1,25-diol 
• 74080-20-9 (R)-6-{(1R,3aS,7aR)-4-[(R)-2-Methoxy-2-((1R,5R)-2-methylene-bicyclo[3.1.0]hex-1-yl)-eth-(E)-ylidene]-7a-methyl-octahydro-inden-1-yl}-2-methyl-heptan-2-ol 
• 69822-72-6 Toluene-4-sulfonic acid (S)-3-[2-[(1R,3aS,7aR)-1-((R)-5-hydroxy-1,5-dimethyl-hexyl)-7a-methyl-octahydro-inden-(4E)-ylidene]-eth-(Z)-ylidene]-4-methylene-cyclohexyl ester 
• 19356-17-3 calcidiol 
• 73809-42-4 (5E,7E,1S,3R)-3-acetoxy-9,10-seco-5,7,10⁽¹⁹⁾-cholestatriene-1,25-diol 
• 64-19-7 acetic acid 
• 157637-96-2 (7E,1S,3R,5S,6R,10S)-6-methoxy-3,5-cyclo-9,10-seco-7-cholestene-1,25-diol 

Relevant academic research and scientific papers

Synthesis, conformational analysis, and biological-activity of the 1-α,25-dihydroxy-10,19-dihydrovitamin D3 isomers

The synthesis of the four 1α,25-dihydroxy-10,19-dihydrovitamin D3 stereoisomers (8-11) is described starting from 25-hydroxyvitamin D3(1c). Acetic acid-catalyzed cycloreversion of 1 α-hydroxylated 3,5-cyclovitamin D compound 14, prod