The invention provides novel amino acids and peptides containing them which comprise a dihydropyridine.revreaction.pyridinium salt-type redox system and which provide site-specific and sustained delivery of pharmacologically active peptides to the brain. These new amino acids contain a redox system appended directly or via an alkylene bridge to the carbon atom adjacent to the carboxyl carbon and may be incorporated into a peptide chain at a variety of positions, including non-terminal positions.
该发明提供了包含
二氢吡啶盐基型氧化还原系统的新型
氨基酸和肽,可以提供药理活性肽在大脑中的特异性和持续性传递。这些新的
氨基酸直接或通过烷基桥接到羧基碳旁边的碳原子上,可以在多个位置,包括非末端位置,被合并到肽链中。