Centrally acting drug species are site-specifically/sustainedly delivered to the brain by administering to a patient in need of such treatment a therapeutically effective amount of the target drug species [D] tethered to a reduced, blood-brain barrier penetrating lipoidal form [D-DHC] of a dihydropyridine.revreaction.pyridinium salt type redox carrier. Oxidation of the dihydropyridine carrier moiety in vivo to the ionic pyridinium salt type drug/carrier entity [D-QC].sup.+ prevents elimination thereof from the brain, while elimination from the general circulation is accelerated, and subsequent cleavage of the quaternary carrier/drug species results in sustained delivery of the drug [D] in the brain and facile elimination of the carrier moiety [QC].sup.+.
中央作用药物种类通过将治疗有效量的目标药物种类[D]系结到一种降低的、穿透血脑屏障的脂质形式[D-DHC]的
二氢吡啶.反应.
吡啶盐型氧化还原载体中,通过向需要此类治疗的患者施用,将药物直接传递到大脑。体内
二氢吡啶载体基团的氧化形成离子型
吡啶盐型药物/载体实体[D-QC].sup.+可以防止其从大脑中被清除,同时加速从全身循环中的清除,随后对季
铵载体/药物种类的裂解导致药物[D]在大脑中的持续释放,以及载体基团[QC].sup.+的容易清除。