The invention realtes to improved liquid phase processes for the preparation of the 21 residue protein component, (Lys-Leu
4
)
4
-Lys, of the pulmonary surfactant KL-4. These process are amenable to large scale synthesis and one process employs a method of saponifying an ester which reduces the inherent racemization of the α-carbon.
该发明涉及改进的液相工艺,用于制备肺表面活性剂KL-4的21个
氨基酸残基蛋白质组分((Lys-Leu4)4-Lys)。这些工艺适用于大规模合成,其中一种工艺采用皂化酯的方法,可减少α-碳的固有旋光异构化。