Late-Stage Macrocyclization of Bioactive Peptides with Internal Oxazole Motifs via Palladium-Catalyzed C–H Olefination
作者:Shu Liu、Chuangxu Cai、Zengbing Bai、Wangjian Sheng、Jiantao Tan、Huan Wang
DOI:10.1021/acs.orglett.1c00580
日期:2021.4.16
the synthesis and direct functionalization of complex oxazole-containing peptides are in high demand. Herein, we report the late-stage site-selective functionalization of oxazole-containing peptides viapalladium-catalyzed δ-C(sp2)–H olefination of phenylalanine, tryptophan, and tyrosine residues. This strategy utilizes oxazole motifs as internal directing groups and provides access to oxazole-containing
The present invention relates to seco (opened ring) macrolide compounds, to the process for preparation thereof, to the use of said seco macrolide compounds as intermediates for preparation of macrolide based macrocycles, to macrolide based macrocycles obtained from said seco macrolide compounds, to the process for preparation of macrolide based macrocycles, to the pharmaceutical compositions comprising macrolide based macrocycles, and to the use of macrolide based macrocycles as therapeutic agents.
The present invention relates to seco (opened ring) macrolide compounds, to the process for preparation thereof, to the use of said seco macrolide compounds as intermediates for preparation of macrolide based macrocycles, to macrolide based macrocycles obtained from said seco macrolide compounds, to the process for preparation of macrolide based macrocycles, to the pharmaceutical compositions comprising macrolide based macrocycles, and to the use of macrolide based macrocycles as therapeutic agents.