Oligonucleotides may be produced by a process, including (1) condensing a nucleoside, nucleotide or oligonucleotide (b), and a nucleoside, nucleotide or oligonucleotide (a), or a substituted nucleotide or oligonucleotide (α) in a non-polar solvent to give a reaction solution containing a phosphite triester product (c); (3) oxidizing or sulfurizing the phosphite triester product (c) to give a reaction solution containing an oligonucleotide (d) wherein the 5′-hydroxy group is protected; (4) deprotecting the oligonucleotide (d) to give a reaction solution containing an oligonucleotide (e) wherein the 5′-hydroxy group is not protected; and (6) adding a polar solvent to the reaction solution containing the oligonucleotide (e) and purifying the oligonucleotide (e) by solid-liquid separation, wherein said nucleoside, nucleotide or oligonucleotide (a) or said substituted nucleotide or oligonucleotide (α) is a compound represented by formula (a-i):
wherein Base, Rp1, R10, m, L, Y, and Z are defined herein.
寡核苷酸可通过以下工艺生产,包括 (1) 在非极性溶剂中缩合核苷、核苷酸或寡核苷酸(b)和核苷、核苷酸或寡核苷酸(a)或取代的核苷酸或寡核苷酸(α),得到含有
亚磷酸三酯产物(c)的反应溶液;(3) 将
亚磷酸三酯产物(c)氧化或
硫化,得到含有寡核苷酸(d)的反应溶液,其中 5′-羟基被保护;(4) 对寡核苷酸(d)进行脱保护,得到含有寡核苷酸(e)的反应溶液,其中 5′-羟基未被保护;(6) 向含有寡核苷酸(e)的反应溶液中加入极性溶剂,并通过固液分离纯化寡核苷酸(e),其中所述核苷、核苷酸或寡核苷酸(a)或所述取代的核苷酸或寡核苷酸(α)是由式(a-i)表示的化合物:
其中 Base、Rp1、R10、m、L、Y 和 Z 在此定义。