Copper-catalyzed amine-alkyne-alkyne addition reaction: an efficient method for the synthesis of gamma,delta-alkynyl-beta-amino acid derivatives.
Chemistry
; 15(43): 11668-74, 2009 Nov 02.
Article
em En
| MEDLINE
| ID: mdl-19777514
ABSTRACT
A simple and efficient method for the synthesis of gamma,delta-alkynyl-beta-amino acid derivatives by a copper-catalyzed three-component amine-alkyne-alkyne addition reaction was developed. Various gamma,delta-alkynyl-beta-amino acid derivatives were synthesized in moderate to good yields in one step. With chiral prolinol derivatives employed as the amine component, excellent diastereoselectivities (up to >991 diastereomeric ratio (dr)) were obtained. The scope of the reaction and further transformations of the resulting amino acid derivatives, such as deprotection and cyclization are also described.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Cobre
/
Alcinos
/
Aminas
/
Aminoácidos
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article