Diastereoselective Synthesis of γ-Hydroxy-β-amino Alcohols and (2<i>S</i>,3<i>S</i>)-β-Hydroxyleucine from Chiral <scp>d</scp>-(<i>N,N</i>-Dibenzylamino)serine (TBDMS) Aldehyde

Abstract

Title serine deriv. I (TBDMS = tert-butyldimethylsilyl; Bn = benzyl) was synthesized from D-serine in excellent overall yield. The reactions of I with Grignard and organocerium reagents were highly stereoselective (Felkin model) to give gamma -hydroxy-beta -amino alcs. II (R = CHMe2, Me, Ph, Bu) in good yield. Transformation of II (R = CHMe2) into (2S,3S)-beta -hydroxyleucine (III) is also reported. [on SciFinder (R)]