用氨基被保护的4-羟基-脯氨酸与L-丙交酯共聚合,得到含有活性氨基作为侧基的聚合物主链(PLLA-Hpr),通过DDC将叶酸与聚合物中的氨基反应,制得叶酸偶联的脯氨酸一乳酸共聚物(FA-PLLA-Hpr).采用1H-NMR、FT-IR确证了共聚物的结构,对比研究了共聚物的亲水性.结果表明成功地制备了叶酸受体靶向的聚乳酸共聚物.这种共聚物有望作为药物缓释领域的肿瘤靶向材料.
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