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Beilstein J. Org. Chem. 2019, 15, 236–255, doi:10.3762/bjoc.15.22
Graphical Abstract
Figure 1: Structure of L-glutamic acid.
Figure 2: 3-Hydroxy- (2), 4-hydroxy- (3) and 3,4-dihydroxyglutamic acids (4).
Figure 3: Enantiomers of 3-hydroxyglutamic acid (2).
Scheme 1: Synthesis of (2S,3R)-2 from (R)-Garner's aldehyde. Reagents and conditions: a) MeOCH=CH–CH(OTMS)=CH2...
Scheme 2: Synthesis of (2S,3R)-2 and (2S,3S)-2 from (R)-Garner’s aldehyde. Reagents and conditions: a) H2C=CH...
Scheme 3: Two-carbon homologation of the protected L-serine. Reagents and conditions: a) Fmoc-succinimide, Na2...
Scheme 4: Synthesis of di-tert-butyl ester of (2R,3S)-2 from L-serine. Reagents and conditions: a) PhSO2Cl, K2...
Scheme 5: Synthesis of (2R,3S)-2 from O-benzyl-L-serine. Reagents and conditions: a) (CF3CH2O)2P(O)CH2COOMe, ...
Scheme 6: Synthesis of (2S,3R)-2 employing a one-pot cis-olefination–conjugate addition sequence. Reagents an...
Scheme 7: Synthesis of the orthogonally protected (2S,3R)-2 from a chiral aziridine. Reagents and conditions:...
Scheme 8: Synthesis of N-Boc-protected (2S,3R)-2 from D-phenylglycine. Reagents and conditions: a) BnMgCl, et...
Scheme 9: Synthesis of (2S,3R)-2 employing ketopinic acid as chiral auxiliary. Reagents and conditions: a) Br2...
Scheme 10: Synthesis of dimethyl ester of (2S,3R)-2 employing (1S)-2-exo-methoxyethoxyapocamphane-1-carboxylic...
Scheme 11: Synthesis of N-Boc-protected dimethyl ester of (2S,3R)-2 from (S)-N-(1-phenylethyl)thioacetamide. R...
Scheme 12: Synthesis of N-Boc-protected dimethyl ester of (2S,3R)-2 via Sharpless epoxidation. Reagents and co...
Scheme 13: Synthesis of (2S,3S)-2 from the imide 51. Reagents and conditions: a) NaBH4, MeOH/CH2Cl2; b) Ac2O, ...
Scheme 14: Synthesis of (2R,3S)-2 and (2S,3S)-2 from the acetolactam 55 (PMB = p-methoxybenzyl). Reagents and ...
Scheme 15: Synthesis of (2S,3R)-2 from D-glucose. Reagents and conditions: a) NaClO2, 30% H2O2, NaH2PO4, MeCN;...
Figure 4: Enantiomers of 3-hydroxyglutamic acid (3).
Scheme 16: Synthesis of (4S)-4-hydroxy-L-glutamic acid [(2S,4S)-3] by electrophilic hydroxylation. Reagents an...
Scheme 17: Synthesis of all stereoisomers of 4-hydroxyglutamic acid (3). Reagents and conditions: a) Br2, PBr5...
Scheme 18: Synthesis of the orthogonally protected 4-hydroxyglutamic acid (2S,4S)-73. Reagents and conditions:...
Scheme 19: Synthesis of (2S,4R)-4-acetyloxyglutamic acid as a component of a dipeptide. Reagents and condition...
Scheme 20: Synthesis of N-Boc-protected dimethyl esters of (2S,4R)- and (2S,4S)-3 from (2S,4R)-4-hydroxyprolin...
Scheme 21: Synthesis of orthogonally protected (2S,4S)-3 from (2S,4R)-4-hydroxyproline. Reagents and condition...
Scheme 22: Synthesis of the protected (4R)-4-hydroxy-L-pyroglutamic acid (2S,4R)-87 by electrophilic hydroxyla...
Figure 5: Enantiomers of 3,4-dihydroxy-L-glutamic acid (4).
Scheme 23: Synthesis of (2S,3S,4R)-4 from the epoxypyrrolidinone 88. Reagents and conditions: a) MeOH, THF, KC...
Scheme 24: Synthesis of (2S,3R,4R)-4 from the orthoester 92. Reagents and conditions: a) OsO4, NMO, acetone/wa...
Scheme 25: Synthesis of (2S,3S,4S)-4 from the aziridinolactone 95. Reagents and conditions: a) BnOH, BF3·OEt2,...
Scheme 26: Synthesis of (2S,3S,4R)-4 and (2R,3S,4R)-4 from cyclic imides 106. Reagents and conditions: a) NaBH4...
Scheme 27: Synthesis of (2R,3R,4R)-4 and (2S,3R,4R)-4 from the cyclic meso-imide 110. Reagents and conditions:...
Scheme 28: Synthesis of (2S,3S,4S)-4 from the protected serinal (R)-23. Reagents and conditions: a) Ph3P=CHCOO...
Scheme 29: Synthesis of (2S,3S,4S)-4 from O-benzyl-N-Boc-D-serine. Reagents and conditions: a) ClCOOiBu, TEA, ...
Scheme 30: Synthesis of (2S,3S,4R)-127 by enantioselective conjugate addition and asymmetric dihydroxylation. ...
Figure 6: Structures of selected compounds containing hydroxyglutamic motives (in blue).