CELLULOSE DERIVATIVES FOR INHIBITING CRYSTALLIZATION OF POORLY WATER-SOLUBLE DRUGS
申请人:Virginia Tech Intellectual Properties, Inc.
公开号:US20150004237A1
公开(公告)日:2015-01-01
Provided are cellulose esters useful for inhibiting solution crystallization of drugs. Specific polymers include cellulose esters of formula I:
wherein n of the ω-carboxyalkanoyl group,
is 3, 4, 6, or 8 to provide a ω-carboxyalkanoyl group chosen from succinoyl, glutaroyl, adipoyl, sebacyl, and suberyl groups; and wherein R is chosen from: a hydrogen atom; and an alkanoyl group chosen from acetyl, propionyl, butyryl, valeroyl, hexanoyl, nonanoyl, decanoyl, lauroyl, palmitoyl, and stearoyl groups; wherein there is a total degree of substitution of the alkanoyl group and the ω-carboxyalkanoyl group of at least 2.0; and wherein the polymer comprises m repeating units where n=1 to 1,000,000, or 10 to 100,000, or 100 to 1,000, such as 1 to 6,000. Embodiments further include compositions comprising cellulose esters and poorly water-soluble drugs, which compositions exhibit greater solubility and stability in solution as compared to the drugs alone.
提供了对于抑制药物溶液结晶有用的纤维素酯。具体的聚合物包括式I的纤维素酯:其中ω-羧基烷酰基团的n为3、4、6或8,以提供从琥珀酰基、戊二酰基、己二酰基、癸二酰基和壬二酰基羧基烷酰基中选择的ω-羧基烷酰基;R从氢原子和从乙酰基、丙酰基、丁酰基、戊酰基、己酰基、壬酰基、癸酰基、月桂酰基、棕榈酰基和硬脂酰基羧酸基中选择的脂肪酰基中选择;其中脂肪酰基和ω-羧基烷酰基的总取代度至少为2.0;聚合物包括m个重复单元,其中n为1至1,000,000、10至100,000或100至1,000,例如1至6,000。实施例还包括包含纤维素酯和难溶于水的药物的组合物,该组合物在溶液中与药物单独相比表现出更高的溶解度和稳定性。