Biocompatible ligation of isonitriles and amines to ureas in neutral aqueous medium was developed here. Direct labeling of Ac4GlcN has been achieved in Hep G2 cells, which may be used to diagnose proteins with abnormal expression in their native habitats. The ligation will provide new avenues for amines and isonitriles in chemical biology applications.
这里开发了在中性水介质中异腈和胺与脲的生物相容性连接。Ac 4 GlcN 的直接标记已在 Hep G2 细胞中实现,可用于诊断在其天然栖息地中表达异常的蛋白质。该连接将为胺和异腈在化学生物学应用中提供新途径。
A convenient method for the synthesis of N-hydroxyureas
作者:Dennis A. Parrish、Zhou Zou、C. Leigh Allen、Cynthia S. Day、S. Bruce King
DOI:10.1016/j.tetlet.2005.10.091
日期:2005.12
Treatment of amines with 1-(4-nitrophenol)-N-(O-benzylhydroxy)carbamate yields the O-benzyl protected N-hydroxyureas. Hydrogenation of the O-benzyl protected N-hydroxyureas over 5% Pd/BaSO4 cleanly gives the N-hydroxyureas in good yield. In addition to primary and secondary aliphatic and aromaticamines, this method converts amino sugars to the corresponding N-hydroxyureas without extensive protecting
Photoredox Catalytic Phosphine-Mediated Deoxygenation of Hydroxylamines Enables the Construction of <i>N</i>-Acyliminophosphoranes
作者:Wencheng Han、Junqi Su、Jia-Nan Mo、Jiannan Zhao
DOI:10.1021/acs.orglett.2c02226
日期:2022.9.2
phosphoranyl radicals has received increasing attention in recent years. Here, we report the generation of amidyl radicals through photocatalytic deoxygenation of hydroxylamines with triphenylphosphine. This methodology offers a novel and convenient route to a diverse range of N-acyliminophosphoranes in moderate to good yields under visible-light photoredox conditions. Fluorescence quenching experiments