The invention comprises Gal NAc phosphoramidite derivatives of the formula (I), wherein R1 is a hydroxy protecting group, n is an integer from 0 to 10 and m is an integer from 0 to 20 and its corresponding enantiomers and/ or optical isomers thereof. The invention further comprises a process for the preparation of the Gal NAc phosphoramidite derivatives of the formula (I) and its use in the preparation of therapeutically valuable GalNAc-cluster oligonucleotide conjugates.
该发明包括公式(I)中的Gal NAc
磷酰胺衍
生物,其中R1是一个羟基保护基团,n是从0到10的整数,m是从0到20的整数,以及其相应的对映体和/或光学异构体。该发明还包括一种制备公式(I)中的Gal NAc
磷酰胺衍
生物的方法,以及其在制备具有治疗价值的GalNAc-簇寡核苷酸共轭物中的用途。