DIASTEREOSELECTIVE NUCLEOPHILIC-ADDITION OF ACETYLIDE TO N-BENZYL-2, 3-O-ISOPROPYLIDENE-D-GLYCERALDEHYDE NITRONE (BIGN) - STEREODIVERGENT SYNTHESIS OF BETA-HYDROXY-ALPHA-(HYDROXYAMINO)-ACID AND BETA-HYDROXY-ALPHA-AMINO-ACID
P. Merino et al., DIASTEREOSELECTIVE NUCLEOPHILIC-ADDITION OF ACETYLIDE TO N-BENZYL-2, 3-O-ISOPROPYLIDENE-D-GLYCERALDEHYDE NITRONE (BIGN) - STEREODIVERGENT SYNTHESIS OF BETA-HYDROXY-ALPHA-(HYDROXYAMINO)-ACID AND BETA-HYDROXY-ALPHA-AMINO-ACID, Tetrahedron : asymmetry, 8(20), 1997, pp. 3489-3496
The stereocontrolled nucleophilic addition of lithium trimethylsilyl a
cetylide to the N-benzyl nitrone (BIGN) derived from 2,3-O-isopropylid
ene-D-glyceraldehyde, followed by oxidative cleavage of the ensuing pr
opargyl hydroxylamines resulted in an efficient stereodivergent synthe
sis of fully protected epimeric N-hydroxy alpha-amino esters 8 and 13
as well as the corresponding cw-amino esters 9 and 14. (C) 1997 Publis
hed by Elsevier Science Ltd.