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The synthesis of 17α, 20α-dihydroxycholesterol and 17α, 20β-dihydroxycholesterol

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N.K. Chaudhuri

Résumé du colloque

Judicious application of the Prelog-Cram rule allowed the stereoselective synthesis of the title compounds. The 20β-hydroxy compound was prepared by the reaction of isohexylmagnesium bromide on 3β,17α-dihydroxy-5-en-20-one, while the 20α-hydroxy compound was prepared by the reaction of methylmagnesium bromide with 3β,17α-dihydroxy-21-norcholest-5-en-20-one. The preparation of the starting material and chemical and spectral arguments employed in the assignments of structure and stereochemistry will be discussed.

Contexte

Section :
Chimie organique
news icon Thème du colloque :
Chimie organique
manager icon Responsables :
Gabor Fodor
host icon Hôte : Université Laval

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Titre du colloque :

Chimie organique

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Thème du colloque :

Chimie organique