Stereoselective introduction of hydroxy-groups into the 24-, 25-, and 26-positions of the cholesterol side chain

Abstract
Asymmetric reduction of steroidal 25-en-24-ones by a complex of LiAlH4 and 2,2′-dihydroxy-1,1′-binaphthyl led to a steroselective introduction of hydroxy-groups into the 24-, 25-, and 26-positions of the cholesterol side chain.