N. Delluomo et al., A STRAIGHTFORWARD SYNTHESIS OF (2S,3R)-3-HYDROXYPROLINE AND TRANS-(2R,3S)-2-HYDROXYMETHYL-3-HYDROXYPYRROLIDINE, Tetrahedron : asymmetry, 7(1), 1996, pp. 181-188
A stereocontrolled synthesis of (2S,3R)-3-hydroxyproline 1, and trans-
(2R,3S)-2-hydroxymethyl-3-hydroxypyrrolidine 2 has been achieved in 21
% and 38% yield via the homochiral 4,5-disubstituted oxazolidin-2-one
3. The trans relationship in 2 has been introduced by a modified Mitsu
nobu reaction.