Methods of synthesizing oligonucleotides using carbonate...

Details Methods of synthesizing oligonucleotides using carbonate... Methods of synthesizing oligonucleotides using carbonate...

2006-09-05

2006-09-05

Riley, Jezia (Department: 1637)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

C536S024300, C536S025300, C536S026600, C435S006120

Reexamination Certificate

active

07101986

ABSTRACT:
The invention provides methods for synthesizing oligonucleotides using nucleoside monomers having carbonate protected hydroxyl groups that are deprotected with α-effect nucleophiles. The α-effect nucleophile irreversibly cleave the carbonate protecting groups while simultaneously oxidizing the internucleotide phosphite triester linkage to a phosphodiester linkage. The procedure may be carried out in aqueous solution at neutral to mildly basic pH. The method eliminates the need for separate deprotection and oxidation steps, and, since the use of acid to remove protecting groups is unnecessary, acid-induced depurination is avoided. Fluorescent or other readily detectable carbonate protecting groups can be used, enabling monitoring of individual reaction steps during oligonucleotide synthesis. The invention is particularly useful in the highly parallel, microscale synthesis of oligonucleotides.

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