申请人:University of Florida
公开号:US04824850A1
公开(公告)日:1989-04-25
The subject compounds, which are adapted for the site-specific/sustained delivery of centrally acting drug species to the brain, are: (a) compounds of the formula [D--DHC] (I) wherein [D] is a centrally acting drug species, and [DHC] is the reduced, biooxidizable, blood-brain barrier penetrating lipoidal form of a dihydropyridine.revreaction.pyridinium salt redox carrier, with the proviso that when [DHC] is ##STR1## wherein R is lower alkyl or benzyl and [D] is a drug species containing a single NH.sub.2 or OH functional group, the single OH group when present being a primary or secondary OH group, said drug species being linked directly through said NH.sub.2 or OH function group to the carbonyl function of [DHC], then [D] must be other than a sympathetic stimulant, steroid sex hormone or long chain alkanol; and (b) non-toxic pharmaceutically acceptable salts of compounds of formula (I) wherein [D] is a centrally acting drug species and [DHC] is the reduced, biooxidizable, blood-brain barrier penetrating lipoidal form of a dihydropyridine.revreaction.pyridinium salt redox carrier. The corresponding ionic pyridinium salt type drug/carrier entitles [D--QC].sup.+ X.sup.- are also disclosed.
这些适用于将中枢作用药物种类定向/持续释放到大脑的主体化合物是:(a) 公式[D--DHC] (I)的化合物,其中[D]是中枢作用药物种类,[DHC]是二氢吡啶盐氧化还原、穿透血脑屏障的脂质形式,带有二氢吡啶盐氧化还原载体,但当[DHC]是##STR1##其中R是较低的烷基或苄基,[D]是含有单个NH.sub.2或OH官能团的药物种类,当存在单个OH官能团时,该OH官能团为一次或二次OH官能团,该药物种类通过NH.sub.2或OH官能团直接连接到[DHC]的羰基官能团,则[D]不能是交感神经刺激剂、类固醇性激素或长链烷醇;以及(b) 公式(I)的化合物的无毒的药用可接受盐,其中[D]是中枢作用药物种类,[DHC]是二氢吡啶盐氧化还原、穿透血脑屏障的脂质形式,带有二氢吡啶盐氧化还原载体。还披露了相应的离子式吡啶盐型药物/载体[D--QC].sup.+ X.sup.-。