Enantioselective synthesis of α-deuterium labelled chiral α-amino acids via dynamic kinetic resolution of racemic azlactones
作者:Joong-Suk Oh、Kyung Il Kim、Choong Eui Song
DOI:10.1039/c1ob06319g
日期:——
Catalytic dynamickineticresolution (DKR) of racemic azlactones with EtOD using squaramide-based dimeric cinchona alkaloid organocatalysts is shown to be a highly effective strategy for the preparation of enantiomerically pure α-deuterated chiral α-amino acids.
Rose, Janet E.; Leeson, Paul D.; Gani, David, Journal of the Chemical Society. Perkin transactions I, 1992, # 13, p. 1563 - 1566
作者:Rose, Janet E.、Leeson, Paul D.、Gani, David
DOI:——
日期:——
Stereospecific synthesis of α-deuteriated α-amino acids: regiospecific deuteriation of chiral 3-isopropyl-2,5-dimethoxy-3,6-dihydropyrazines
作者:Janet E. Rose、Paul D. Leeson、David Gani
DOI:10.1039/p19950000157
日期:——
Base-catalysed deuteriation of (3R)- or (3S)-3-isopropyl-2.5-dimethoxy-3,6-dihydropyrazines in refluxing (CH3OH)-H-2-(H2O)-H-2 gives the [6-H-2(2)]-isotopomer in excellent yields without disturbing the stereogenic centre at C-3. These compounds provide convenient and efficient access to a range of (R)- and (S)-alpha-deuteriated alpha-amino acids, including serine, aspartic acid, allylglycine and phenylalanine, via alkylation of the butyllithium generated C-6 anion.