申请人:——
公开号:US20010056116A1
公开(公告)日:2001-12-27
The invention involves the formation of a prodrug from a fatty acid carrier and a neuroactive drug. The prodrug is stable in the environment of both the stomach and the bloodstream and may be delivered by ingestion. The prodrug passes readily through the blood brain barrier. Once in the central nervous system, the prodrug is hydrolyzed into the fatty acid carrier and the drug to release the drug.
In a preferred embodiment, the carrier is 4, 7, 10, 13, 16, 19 docosahexa-enoic acid and the drug is dopamine. Both are normal components of the central nervous system. The covalent bond between the drug and the carrier preferably is an amide bond, which bond may survive the conditions in the stomach. Thus, the prodrug may be ingested and will not be hydrolyzed completely into the carrier molecule and drug molecule in the stomach.
该发明涉及使用脂肪酸载体和神经活性药物形成前药。该前药在胃和血液流动环境中稳定,并可通过口服递送。该前药容易穿过血脑屏障。一旦进入中枢神经系统,前药被水解成脂肪酸载体和药物以释放药物。在首选实施方式中,载体是4,7,10,13,16,19二十二碳六烯酸,药物是多巴胺。两者都是中枢神经系统的正常成分。药物和载体之间的共价键通常是酰胺键,这种键可以在胃的条件下存活。因此,前药可以被摄入,并且不会在胃中完全水解成载体分子和药物分子。