作者:Tadashi Teshima、Kunikazu Konishi、Tetsuo Shiba
DOI:10.1246/bcsj.53.508
日期:1980.2
A cyclic guanidino amino acid, l-epicapreomycidine, isolated from hydrolyzates of protease inhibitors such as chymostatin and elastatinal was synthesized. This amino acid is a diastereomer of l-capreomycidine which is a component amino acid of tuberactinomycin N,O and capreomycin. A new synthetic route from β-hydroxy-Dl-orni thine via an aziridine compound to Dl-capreomycidine was applied to the synthesis of l-epicapreomycidine starting from erythro-β-hydroxy-l-ornithine. A convenient and one-step technique to obtain l-erythro form from a mixture of four diastereomers of β-hydroxyornithine by means of enzymatic reaction was newly exploited. The synthetic l-epicapreomycidine obtained was identical with natural one in all respects, thus confirming the proposed structure.
从糜蛋白酶和弹性蛋白酶等蛋白酶抑制剂的水解物中分离合成了一种环状胍基氨基酸--l-表链霉素。这种氨基酸是 l-表链霉素的非对映异构体,而 l-表链霉素是结核霉素 N,O 和辣椒霉素的组成氨基酸。从 β-羟基-Dl-鸟氨酸经氮丙啶化合物到 Dl-开环霉素的新合成路线被应用于从红-β-羟基-l-鸟氨酸开始合成 l-表开环霉素。通过酶促反应从 β-羟基鸟氨酸的四种非对映异构体的混合物中一步获得 l-赤霉烷型的简便技术得到了新的开发。合成的 l-epicapreomycidine 与天然的 l-epicapreomycidine 在所有方面都相同,从而证实了所提出的结构。