Microcapsule preparation for reducing increased intracranial pressure and a process for preparing the same
申请人:Tanabe Seiyaku Co., Ltd.
公开号:EP0068324A2
公开(公告)日:1983-01-05
A microcapsule preparation for reducing increased intracranial pressure, which contains as an effective ingredient a propanol derivative of the formula:
wherein R is an alkyl having 1 to 4 carbon atoms, and ring A is phenyl, halogenophenyl, methylphenyl or trifiuoro- methylphenyl, or a pharmaceutically acceptable acid addition salt thereof which is coated with ethyl cellulose fiim, and a process for preparing the microcapsule preparation by forming a coating film of ethyl cellulose onto the core material of the propanol derivative (I) or a salt thereof utilizing phase separation phenomenon which arises in cooling of a dispersion of the core material in a hot organic solvent solution of ethyl cellulose.
一种用于降低颅内压增高的微胶囊制剂,其有效成分是式中的丙醇衍生物:其中 R 是具有 1 至 4 个碳原子的烷基,环 A 是苯基、卤素苯基、甲基苯基或三牛磺基甲基苯基,或其药学上可接受的酸加成盐,该微胶囊制剂涂有乙基纤维素;以及一种制备该微胶囊制剂的工艺,该工艺是利用相分离现象,在丙醇衍生物 (I) 或其盐的芯材上形成一层乙基纤维素涂膜,该相分离现象是在冷却芯材在乙基纤维素的热有机溶剂溶液中的分散体时产生的。