The present invention is directed to a water-soluble polyether glycol polymer having: a structural backbone of carbon atoms and oxygen atoms where there are at least two consecutive carbon atoms present between each oxygen atom; a moiety on the backbone of the polymer or a functionalized derivative on the polymer, that is cationic at physiological pH and permits complexation with phosphate or oxalate; and an average molecular weight from about 5,000 to about 750,000 Daltons. These polymers are formulated for oral dosage to reduce the phosphonate or oxalate levels in an animal. The process of preparing these polymers and the method of reducing gastrointestinal absorption of phosphate and oxalate are included.
本发明涉及一种
水溶性聚醚聚醇聚合物,其具有以下特征:碳原子和氧原子构成的结构骨架,在每个氧原子之间至少存在两个相邻的碳原子;聚合物骨架上的基团或聚合物上的官能化衍
生物,在生理pH下是阳离子的,并允许与
磷酸盐或
草酸盐形成配合物;平均分子量约为5,000至750,000道尔顿。这些聚合物被制成口服剂量形式,以降低动物体内的
磷酸盐或
草酸盐
水平。本发明还包括制备这些聚合物的方法以及减少
磷酸盐和
草酸盐胃肠吸收的方法。