Fast and Facile Synthesis of 4-Nitrophenyl 2-Azidoethylcarbamate Derivatives from <i>N</i>-Fmoc-Protected α-Amino Acids as Activated Building Blocks for Urea Moiety-Containing Compound Library
作者:Ying-Ying Chen、Li-Te Chang、Hung-Wei Chen、Chia-Ying Yang、Ling-Wei Hsin
DOI:10.1021/acscombsci.6b00160
日期:2017.3.13
A fast and facile synthesis of a series of 4-nitrophenyl 2-azidoethylcarbamate derivatives as activated urea building blocks was developed. The N-Fmoc-protected 2-aminoethyl mesylates derived from various commercially available N-Fmoc-protected α-amino acids, including those having functionalized side chains with acid-labile protective groups, were directly transformed into 4-nitrophenyl 2-azidoethylcarbamate
快速,简便地合成了一系列4-硝基苯基2-叠氮基乙基氨基甲酸酯衍生物作为活化尿素的基础。衍生自各种市售N -Fmoc保护的α-氨基酸的N -Fmoc保护的2-氨基乙基甲磺酸酯,包括那些具有带有酸不稳定保护基的官能化侧链的氨基酸,直接转化为4-硝基苯基2-叠氮基乙基氨基甲酸酯衍生物。通过一锅两步反应1 h。这些尿素结构单元用于制备一系列含尿素部分的米托蒽醌-氨基酸共轭物,产率为75-92%,尿素化合物文库的平行溶液相合成由30个成员组成,总产率为38-70% 。