Diversity-oriented synthesis of cyclopropyl peptides from Ugi-derived dehydroalanines
作者:David A. Contreras-Cruz、Miguel A. Sánchez-Carmona、Fabio A. Vengoechea-Gómez、Daniel Peña-Ortíz、Luis D. Miranda
DOI:10.1016/j.tet.2017.09.005
日期:2017.10
A three-step synthesis of cyclopropyl peptides is reported. The protocol involves a consecutive Ugi-4CR/elimination reaction to prepare dehydroalanines followed by a Corey-Chaykovsky cyclopropanation reaction. Peptide-like molecules that resemble some pharmacologically active compounds with a variety of substituents in the cyclopropane ring were prepared. When (2-ethoxy-2-oxoethyl) dimethyl sulfonium