申请人:LARSEN Claus Selch
公开号:US20140315960A1
公开(公告)日:2014-10-23
The present invention relates to novel depot formulations (prodrugs) comprising an immobility promoting unit linked via an ester to an active pharmaceutical ingredient, i.a. common NSAIDs. The novel depot formulations are suitable for intra-articular injections and are soluble at slightly acidic pH to facilitate ease of injection, and sparingly soluble at physiological pH thereby precipitating at the site of administration. The precipitate will slowly dissolve and the active drug is released from dissolved depot formulation following esterase mediated cleavage of the ester link between the immobility promoting unit and the active pharmaceutical agent.
本发明涉及一种新型的仓库制剂(前药),其中包括通过酯键连接的促进不动性单元和活性药物成分,例如常见的非甾体抗炎药。这种新型仓库制剂适用于关节内注射,在稍微酸性pH下可溶解以便于注射,而在生理pH下溶解度较低,因此在给药部位沉淀。沉淀物会缓慢溶解,活性药物将从溶解的仓库制剂中释放出来,通过酯酶介导的酯键裂解促进不动性单元和活性药物成分之间的连接。