Automated system for polynucleotide synthesis and purification

Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives

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536 28, 536 29, C07H 2102, C07H 2104

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050475240

ABSTRACT:
A method and system for polynucleotide synthesis and purification are provided which employ solid phase synthesis on a nonswellable porous polystyrene support by phosphoramidite or hydrogen phosphonate chemistries. The polystyrene support gives rise to fewer tritylated failure squences caused by chain growth from extraneous support sites. Consequently, currently used rapid purification techniques depending on trityl hydrophobicity give a more highly purified product. The method and system also employ nucleoside intermediates whose exocyclic amines are protected by base-labile groups which permit simultaneous cleavage and deprotection of the completed polynucleotide chain in the presence of the solid phase support. This latter feature allows practical automation of both the synthesis and purification of polynucleotides.

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