A method is provided for preparing water-soluble polymer derivatives bearing a terminal carboxylic acid or ester thereof. The method involves the hydrolyzing an ortho ester of a water-soluble polymer so as provide the corresponding acid. In addition, the invention provides water-soluble polymers bearing a terminal carboxylic acid or ester thereof, intermediates and reagents useful in carrying out the method, as well as gels, pharmaceutical formulations, conjugates related to the described water-soluble polymer derivatives.
提供了一种制备带有羧基末端或其酯的
水溶性聚合物衍
生物的方法。该方法涉及
水溶性聚合物的正交酯
水解,从而提供相应的酸。此外,该发明提供了带有羧基末端或其酯的
水溶性聚合物,以及在执行该方法中有用的中间体和试剂,以及与所述
水溶性聚合物衍
生物相关的凝胶、药物配方和共轭物。