A Heterobifunctional Linker Bearing Azide-reactive Alkyne and Thiol-reactive Maleimide Connected with <i>N</i>-(2-Nitrobenzyl)imide to Synthesize Photocleavable Diblock Copolymers
作者:Shota Yamamoto、Seiichi Nakahama、Kazuo Yamaguchi
DOI:10.1246/cl.130235
日期:2013.8.5
A novel heterobifunctional linker 1 connected with photocleavable N-(2-nitrobenzyl)imide has been developed. Hydrophobic polystyrene (PS), hydrophilic poly(ethylene oxide) (PEO), and thermosensitive poly(N-isopropylacrylamide) (PNIPAM) containing thiol or azide at the terminal, synthesized by a living radical polymerization or a transformation of terminal functional groups, were coupled with the alkyne and maleimide protected as the furan adduct at both terminals of 1 to synthesize three types of photocleavable diblock copolymers in high yields.
开发了一种新型异双功能连接剂1,该连接剂与光分解N-(2-硝基苯基)酰亚胺相连。通过活性自由基聚合或末端功能团转化合成的含有巯基或叠氮基的疏水性聚苯乙烯(PS)、亲水性聚乙烯氧化物(PEO)和热敏聚(N-异丙基丙烯酰胺)(PNIPAM)与烷炔和马来酰亚胺在连接剂1的两个末端以呋喃加成物保护,合成了三种类型的光分解二嵌段共聚物,具有高产率。