EPIMERIZATION BY STEREOSELECTIVE SYNTHESIS OF VITAMIN D ANALOGUES

A method for epimerization process of C-24 ketones to desired C-24 alcohol by stereo selective reduction using chiral borane reducing agents in the presence of chiral auxiliary such as (R)-2-methyl-CBS-oxazaborolidine for the preparation of calcipotriene intermediates and its process to calcipotrien...

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Hauptverfasser:	KHAN, MUBEEN, DAYAGHAN, GANGADHAR, PATIL, GHANSHYAM, BALURAM, WAGH
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM APPARATUS THEREFOR CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY
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