One Step Synthesis of Inverted Aspartame Type Sweetener, Ac-Phe-Lys, Using Chemically Modified Chymotrypsin
作者:Jiro OAKI、Kayoko NAKAHARA、Masahiro TAMURA、Hideo OKAI
DOI:10.1271/bbb.63.1156
日期:1999.1
for techniques of simplified peptide synthesis, benzyloxycarbonyl chymotrypsin was prepared by a water-soluble acylating reagent and used to make Ac-Phe-Lys, an artificial peptide sweetener, which was selected as a target compound. As a result of using chemically modified chymotrypsin, Lys can be coupled directly with Ac-Phe and Ac-Phe-Lys made virtually in one step. Moreover, the total yield from preparation
为了寻找简化的肽合成技术,通过水溶性酰化试剂制备了苄氧羰基胰凝乳蛋白酶,并用于制备人工肽甜味剂Ac-Phe-Lys,将其选为目标化合物。由于使用了化学修饰的胰凝乳蛋白酶,Lys可以与一步一步制备的Ac-Phe和Ac-Phe-Lys直接偶联。此外,来自Ac-Phe-Lys的制备和纯化步骤的总产率为13%。该值对应于化学合成方法的值。相反,使用天然胰凝乳蛋白酶的酶法合成无法达到新方法的水平。期望与其他方法相比,该方法对于简化的肽合成更有效,尤其是大规模的方法。