Synthesis of 2-substituted 8-amino-3-oxoindolizidine-2-carboxylic acid derivatives as peptide conformation mimetics
作者:Rosario González-Muñiz、María José Domínguez、María Teresa García-López
DOI:10.1016/s0040-4020(01)90127-9
日期:1992.1
The synthesis of methyl 8-tert-butyloxycarbonylamino-3-oxoindolizidine-2-carboxylate and its alkyl derivatives bearing Phe, Trp and Asp side chains at C2 position are described. These bridged bicyclic lactams, obtained with high and moderate stereocontrol at C-8a and C2, respectively, have appropriate N- and C-protecting groups making them suitable for incorporation as spacers into higher peptides.