144494-74-6Relevant articles and documents
First asymmetric synthesis of a 6-alkoxy-5,6-dihydro-1,3-oxazine: A promising enantioselective route to β-amido aldehydes
Gizecki, Patricia,Dhal, Robert,Toupet, Loic,Dujardin, Gilles
, p. 585 - 588 (2000)
equation presented The 1,3-oxazine route to enantiopure β-amido aldehydes was investigated. Heterocycloaddition of the N-acyl imine 1 with (R)-O-vinylpantolactone provided the stable dihydroxazine 4c. High diastereocontrols were observed when using Yb(fod)3-catalyzed or SnCl4-mediated conditions, thus leading after quantitative hydrolysis to (R)-N-benzoyl-3-phenylpropanal with >98% ee.
A stereoselective synthesis of (2R,3S)-N-benzoylphenylisoserine methyl ester
Cardillo,Gentilucci,Tolomelli,Tomasini
, p. 2351 - 2353 (1998)
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Fluorinated β2- and β3-amino acids: Synthesis and inhibition of α-chymotrypsin
Peddie, Victoria,Pietsch, Markus,Bromfield, Karen M.,Pike, Robert N.,Duggan, Peter J.,Abell, Andrew D.
experimental part, p. 1845 - 1859 (2010/10/18)
The synthesis of a series of -fluorinated β2- and β3-amino acid derivatives is described. Stereoselective fluorination at the -carbon of the β3-amino acids was achieved by deprotonation with lithium diisopropylamide followed by treatment with N-fluorobenzenesulfonimide. Fluorination of β2-amino acids employed the chiral auxiliary (4R)-4-benzyl-2-oxazolidinone. The α-fluorinated amino acids and their non-fluorinated precursors were found to competitively inhibit α-chymotrypsin. Georg Thieme Verlag Stuttgart New York.
Kinetic resolution of oxazinones: An organocatalytic approach to enantiomerically pure β-amino acids
Berkessel, Albrecht,Cleemann, Felix,Mukherjee, Santanu
, p. 7466 - 7469 (2007/10/03)
(Chemical Equation Presented) A profitable split: An organocatalytic resolution converts readily available racemic oxazinones 1 into valuable enantiomerically pure β-amino acid derivatives 2 (> 99% ee of the remaining 1 at 53% conversion; 88% ee of the ester 2). This catalytic ring-opening reaction requires as little as 1 mol% of the modular and readily accessible thiourea organocatalyst 3.