Highly diastereoselective preparation of anti-α,β-dialkyl β-amino acids containing natural α-amino acid side chains
作者:Stefania Capone、Silvana Pedatella、Annalisa Guaragna、Mauro De Nisco、Giovanni Palumbo
DOI:10.1016/j.tet.2007.09.049
日期:2007.12
An efficient synthesis of anti-2-alkyl β3-amino acids was developed starting from the fully protected β3-amino acids. The strategy allows the introduction of the sidechain of natural α-amino acids such as Ala, Phe and Ser at the C-2 position, with high diastereoselectivity. The preparation of 2-methyliden-β3-amino acids is also reported. This methodology does not need the use of expensive chiral reagents