The present invention relates to a novel manufacturing process of pharmaceutically active compound of formula (I) used as oral anti-diabetic drug. Starting from -aspartic acid derivate of formula (IV) the invention describes preparation of the chiral (R)-β-amino acid of formula (II) known as a precursor in the synthesis of Sitagliptin (Formula I). Formulae (I), (II) & (IV):
本发明涉及一种新型的制造口服抗糖尿病药物化合物(I)的制造工艺。从公式(IV)的
天冬氨酸衍
生物开始,本发明描述了手性(R)-β-
氨基酸的制备方法,该手性(R)-β-
氨基酸是Sitagliptin合成中的前体。公式(I)、(II)和(IV)如下: