Several kinds of N-free and protected N-carboxydehydrotyrosine anhydride (ΔTyr·NCA) derivatives, derived by both the cyclization of the corresponding N-benzyloxycarbonyldehydrotyrosine derivatives and the protection of the resulting ΔNCA, were employed for a one-pot dehydrooligopeptide (DHP) synthesis. As a result, various kinds of DHPs with a wide variety of combinations of sequences could be synthesized in fairly good yields. In addition, by utilizing the obtained information, two kinds of leucine-dehydroenkephalins containing a ΔTyr1 and both ΔTyr1 and ΔPhe4 residues were also synthesized.
通过对相应的
N-苄氧羰基脱氢
酪氨酸衍
生物进行环化以及对所得到的 ΔNCA 进行保护,几种无 N 和受保护的 N-羧基脱氢
酪氨酸酸酐(ΔTyr-NCA)衍
生物被用于脱氢寡肽(
DHP)的一锅合成。因此,可以以相当高的产率合成具有多种序列组合的各种
DHP。此外,利用所获得的信息,还合成了两种含有 ΔTyr1 和 ΔTyr1 及 ΔPhe4 残基的亮
氨酸脱氢
脑啡肽。