Synthesis of All Four Stereoisomers of 3-Amino-2-hydroxybutanoic Acids
作者:Jin Hwan LEE、Min Suk YANG、Kuy Young KANG、Yea Hwang MOON、Ki Hun PARK
DOI:10.1271/bbb.68.714
日期:2004.1
All fourstereoisomers of 3-amino-2-hydroxybutanoic acids were been obtained as single enantiomers via stereospecific reactions from D-gulonic acid gamma-lactone and D-glucono-delta-lactone.
Etude par la modélisation moléculaire de la régiosélectivité de l'Ouverture des acides glycidiques par les amines aliphatiques
作者:F. Grosjean、M. Huché、M. Larchevêque、J.J. Legendre、Y. Petit
DOI:10.1016/s0040-4020(01)85509-5
日期:——
A model for glycidic acids opening reaction by ammonia and amines has been suggested from semi-empiric orbital calculations. It provides a way for evaluating the different interactions between the incoming nucleophile and the oxirane substituents. Steric and coulombic interactions of the carboxylate in staggered conformation (cis substitution) has a major influence to rationalize experimental regioselectivity
Stereocontrolled Asymmetric Synthesis of α-Hydroxy-β-amino Acids. A Stereodivergent Approach
作者:Yutaka Aoyagi、Rajendra P. Jain、Robert M. Williams
DOI:10.1021/ja0042332
日期:2001.4.1
The stereocontrolled asymmetric synthesis of alpha-hydroxy-beta-amino acids has been investigated via the Lewis acid-promoted cyanation of (5R,6S)-2-acetoxy-4-(benzyloxycarbonyl)-5,6-diphenyl-2,3,5,6-tetrahydro-4H-1,4-oxazines with trimethylsilyl cyanide. Base-catalyzed hydrolysis of the resulting cyano compounds proceeds with excellent stereoselectivity, providing access to diastereomerically pure
Liwschitz,Y. et al., Israel Journal of Chemistry, 1963, vol. 1, p. 441 - 444
作者:Liwschitz,Y. et al.
DOI:——
日期:——
Stereoselective synthesis of α-hydroxy-β-amino acids using D-glyceraldehyde as the homochiral source
作者:Carlos Cativiela、Maria D. Diaz-de-Villegas、JoséA. Gálvez
DOI:10.1016/0957-4166(96)00037-7
日期:1996.2
A systematic study of the diastereoselective addition of methyl organometallic compounds to the benzyl imine derived from conveniently protected D-glyceraldehyde in order to develop a new approach to enantiomerically pure alpha-hydroxy-beta-amino acids is reported. Methylmagnesium bromide addition afforded the corresponding adduct, which can be further elaborated to give (2S, 3R) 3-amino-2-hydroxybutanoic acid, with complete diastereoselectivity.