Studies of Alicyclic α-Amino Acids. IV. Conformational Analysis of Alicyclic α-Amino Acids and Stereochemistry of the Strecker and the Bucherer Reactions
Asymmetric synthesis of cycloaliphatic α-amino acids with a norbornane skeleton
作者:Carlos Cativiela、Pilar López、JoséA. Mayoral
DOI:10.1016/0957-4166(90)90038-c
日期:1990.1
The asymmetric synthesis of endo and exo 2-aminonorbornane-2-carboxylic acids is carried out via the Diels-Alderreaction between cyclopentadiene and (−)-menthyl N-acetyl-α,β-dehydroalaninate. It is shown that this dienophile is more reactive than the corresponding methyl ester, which opens the way for the use of chiral N-acetyl-α,β-dehydroalaninates as dienophiles in asymmetricDiels-Alder reactions
CATIVIELA, CARLOS;LOPEZ, PILAR;MAYORAL, JOSE A., TETRAHEDRON:, 1,(1990) N, C. 61-64
作者:CATIVIELA, CARLOS、LOPEZ, PILAR、MAYORAL, JOSE A.
DOI:——
日期:——
Pyne, Stephen G.; Dikic, Branko; Gordon, Peter A., Australian Journal of Chemistry, 1993, vol. 46, # 1, p. 73 - 93
作者:Pyne, Stephen G.、Dikic, Branko、Gordon, Peter A.、Skelton, Brian W.、White, Allan H.
DOI:——
日期:——
Studies of Alicyclic α-Amino Acids. IV. Conformational Analysis of Alicyclic α-Amino Acids and Stereochemistry of the Strecker and the Bucherer Reactions
作者:YOSHIFUMI MAKI、TAKASHI MASUGI、KOJI OZEKI
DOI:10.1248/cpb.21.2466
日期:——
Conformational analysis of a pair of isomeric alicyclic α-amino acids was made by comparison of relative rates for alkaline hydrolysis of their ethyl esters. It was found that in a sharp contrast with the case of 2-norbornanone, employment of the Strecker and the Bucherer reactions in 2-bornanone resulted in the predominant formation of the corresponding amino acid possessing exo-amino and endo-carboxyl groups. On the basis of this finding, the stereochemical courses of the Strecker and the Bucherer reactions in the synthesis of alicyclic α-amino acid are also discussed.