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 functional 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). The corresponding ionic pyridinium salt type drug/carrier entities [D-QC].sup.+ X.sup.- are also disclosed.
这些适用于特定部位/持续输送中枢作用药物到大脑的化合物为:(a) 公式[D-DHC] (I)的化合物,其中[D]是中枢作用药物,[DHC]是
二氢吡啶的还原、可氧化、穿过血脑屏障的脂质形式。revreaction.
吡啶盐氧化还原载体,但当[DHC]为##STR1##其中R是低碳基或苄基,[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,它是一级或二级OH官能团,所述药物种类直接通过所述NH.sub.2或OH官能团与[DHC]的羰基功能相连,那么[D]必须不是交感神经兴奋剂、类
固醇性激素或长链
脂肪醇;以及(b)公式(I)的化合物的无毒药用可接受盐。还公开了相应的离子
吡啶盐型药物/载体实体[D-QC]。sup.+ X.sup.-。