A chimeric oligonucleotide tetramer and hexamer were synthesized by the phosphoramidite approach using a 2+2 and 3+3 strategy, respectively. The concept of convergent synthesis provides an efficient route toward the synthesis of longer chimeric oligonucleotides, such as small interfering RNA oligonucleotides without the pollution of n – 1 or shorter failures. This methodology offers an efficient and economical way to scale-up the synthesis of high purity oligonucleotides for clinical trials and commercial uses.
利用 2+2 和 3+3 策略,通过磷酰胺方法分别合成了嵌合寡核苷酸四聚体和六聚体。聚合合成的概念为合成更长的嵌合寡核苷酸(如小干扰 RNA 寡核苷酸)提供了一条有效的途径,而不会造成 n - 1 或更短的失败。这种方法为临床试验和商业用途的高纯度寡核苷酸的规模化合成提供了一种高效、经济的途径。