Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Starting from L-(S)-erythrulose, now available in larger quantities, the preparation of L-(S)-glyceraldehyde , L-(R)-glycerol and L-(S)-methyl glycerate acetonides, via the protected L-(S)-3,4-O-isopropylideneerythrulose , is described. ... The now more readily available L-(S)-eryhtrulose ( ) is a suitable ...