申请人:——
公开号:US20020086990A1
公开(公告)日:2002-07-04
The present invention relates to the preparation of a series of oxidized cellulose esters suitable for use as a drug carrier in the development of biodegradable controlled and/or sustained release pharmaceutical, agricultural, and veterinary compositions, such as films, compacts, microspheres, and pellets. The esters are prepared by acylation of oxidized cellulose having at least 3% carboxyl groups. The resulting oxidized cellulose esters are soluble in aqueous alkaline solutions, water, and a variety of organic solvents.
本发明涉及一系列氧化纤维素酯的制备,这些酯适合用作药物载体,用于开发可生物降解的控释和/或缓释药物、农用和兽用组合物,如薄膜、压制物、微球和颗粒。这些酯类是通过对至少含有 3% 羧基的氧化纤维素进行酰化而制备的。生成的氧化纤维素酯可溶于碱性水溶液、水和各种有机溶剂。