Gel-forming block copolymers were prepared comprising i) a central hydrophilic block consisting essentially of a divalent poly(ethylene oxide) chain and ii) two peripheral monocarbonate or polycarbonate hydrophobic blocks. The hydrophobic blocks comprise one or more vitamin-bearing subunits. The vitamin-bearing subunits comprise a carbonate backbone portion and a side chain comprising a covalently bound form of a vitamin. The gel-forming block copolymers can be used to prepare various biodegradable and/or biocompatible hydrogel and organogel drug compositions, in particular antimicrobial and/or anti-tumor drug compositions. The hydrogel compositions can be suitable for depot injections. Synergistic enhancement of toxicity to microbes was observed with compositions comprising an antimicrobial cationic polymer and an antimicrobial compound.
制备了包括i) 主要由二价聚
乙二醇链组成的中心亲
水性块和ii) 两个周边单
碳酸酯或多
碳酸酯疏
水性块的凝胶形成嵌段共聚物。疏
水性块包括一个或多个含
维生素的亚基。含
维生素的亚基包括
碳酸酯骨架部分和一个侧链,该侧链包括一种
维生素的共价结合形式。这些凝胶形成嵌段共聚物可用于制备各种可
生物降解和/或
生物相容的
水凝胶和有机凝胶药物组合物,特别是抗微
生物和/或
抗肿瘤药物组合物。
水凝胶组合物适用于局部注射。观察到了与包括抗微
生物阳离子聚合物和抗微
生物化合物的组合物相比,对微
生物毒性的协同增强效果。