Bioconjugation of D-glucuronic acid sodium salt to well-defined primary amine-containing homopolymers and block copolymers
作者:Alp H. Alidedeoglu、Adam W. York、Dale A. Rosado、Charles L. McCormick、Sarah E. Morgan
DOI:10.1002/pola.24083
日期:——
as the chain transfer agent and 4,4′‐azobis(4‐cyanovaleric acid) (V‐501) as the initiator at 70 °C. The resulting well‐defined PAPMA was then conjugated with D‐glucuronic acid sodium salt through reductive amination in alkaline medium (pH 8.5) at 45 °C. The successful bioconjugation was proven through proton (1H) and carbon (13C) nuclear magnetic resonance spectroscopy and matrix‐assisted laser desorption/ionization
演示了通过在水性介质中对水溶性水溶性伯胺甲基丙烯酰胺聚(N- [3-氨基丙基]甲基丙烯酰胺)(PAPMA)进行一步后聚合修饰而制备的,定义明确的羧酸官能化糖聚合物。PAPMA首先通过水性可逆加成-断裂链转移聚合在水性缓冲液中进行聚合,使用4-氰基戊酸二硫代苯甲酸酯作为链转移剂,并以4,4'-偶氮双(4-氰基戊酸)(V-501)作为引发剂,温度为70 ℃。然后,通过在碱性介质(pH 8.5)中于45°C进行还原胺化,将得到的定义明确的PAPMA与D-葡萄糖醛酸钠盐偶联。通过质子(1 H)和碳(13C)核磁共振波谱和基质辅助激光解吸/电离飞行时间质谱分析,表明接近定量转换。类似的生物缀合反应用的聚(2-氨乙基甲基丙烯酸酯)(PAEMA)和聚(2-氨乙基甲基丙烯酸酯进行b -聚(ñ - [2-羟基丙基]甲基丙烯酰胺)(PAEMA- b。-PHPMA)对于PAEMA均聚物但是,嵌段共聚物和嵌段共聚