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.
本发明提供了一种新型
氨基酸和含有它们的肽,其中包括一种
二氢吡啶基盐型氧化还原系统,可提供对大脑具有药理活性的肽的特定部位和持续输送。这些新的
氨基酸直接或通过一个烷基桥接到羧基碳邻接的碳原子上,并可在肽链的各个位置,包括非末端位置,中被纳入。