Convergent synthesis of phosphorodiamidate morpholino oligonucleotides (PMOs) by the H-phosphonate approach.

Phosphorodiamidate morpholino oligonucleotides (PMOs) are a promising type of antisense oligonucleotides, but their challenging synthesis makes them difficult to access. This research presents an efficient synthetic approach for PMOs using the H-phosphonate approach. The use of phosphonium-type condensing reagents significantly reduced coupling times compared with the current synthetic approach. Furthermore, phosphonium-type condensing reagents facilitated the fragment condensation of PMO, synthesizing up to 8-mer containing all four nucleobases with remarkable coupling efficacy. This is the first report on the convergent synthesis of PMOs. This approach would facilitate the large-scale synthesis of PMOs and accelerate their popularity and accessibility as a next-generation therapy. © 2023. Springer Nature Limited.

Citation

Taiki Tsurusaki, Kazuki Sato, Hiroki Imai, Kunihiro Hirai, Daisuke Takahashi, Takeshi Wada. Convergent synthesis of phosphorodiamidate morpholino oligonucleotides (PMOs) by the H-phosphonate approach. Scientific reports. 2023 Aug 03;13(1):12576

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PMID: 37537221

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