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Linker phosphoramidite reagents for the attachment of the first nucleoside to underivatized solid-phase supports.

ABSTRACT: New linker phosphoramidite reagents containing a cleavable 3'-ester linkage are used for attaching the first nucleoside to the surface of a solid- phase support. Inexpensive, underivatized amino supports, such as long chain alkylamine controlled-pore glass, can serve as universal supports. No modifications to phosphoramidite coupling conditions are required and, after synthesis, treatment with NH(4)OH releases the products with 3'-OH ends. No 3'-dephosphorylation is required. Phosphoramidite reagents containing a succinate and sulfonyl diethanol linkage between the nucleoside and phosphoramidite group are particularly advantageous and can be used to create both 3'-OH and 5'-phosphate ends on oligonucleotides. Reproducibility and quality of oligonucleotide synthesis is demonstrated for either column and 96-well plate formats on low-, medium- or high-loading CPG supports.

SUBMITTER: Pon RT

PROVIDER: S-EPMC373346 | biostudies-literature | 2004

REPOSITORIES: biostudies-literature

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Linker phosphoramidite reagents for the attachment of the first nucleoside to underivatized solid-phase supports.

Pon Richard T RT Yu Shuyuan S

Nucleic acids research 20040129 2

New linker phosphoramidite reagents containing a cleavable 3'-ester linkage are used for attaching the first nucleoside to the surface of a solid- phase support. Inexpensive, underivatized amino supports, such as long chain alkylamine controlled-pore glass, can serve as universal supports. No modifications to phosphoramidite coupling conditions are required and, after synthesis, treatment with NH(4)OH releases the products with 3'-OH ends. No 3'-dephosphorylation is required. Phosphoramidite rea ...[more]

PMID: 14752050

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