title: A convenient approach to the synthesis of trinucleotide phosphoramidites--synthons for the generation of oligonucleotide/peptide libraries.
abstract: Trinucleotide phosphoramidites that correspond to the codons of all 20 amino acids were synthesized in high yield in 5g scale. Precursors of those amidites--trinucleotide phosphotriesters--have been prepared using the phosphotriester approach without protection of the 3'-hydroxyl function. The structures of trinucleotide phosphotriesters and intermediates were confirmed by 1H- and 31P-NMR spectra, mass-spectra and by analysis of SPDE-hydrolysates of deprotected preparations. Purity of the target products has been confirmed by test reactions. The synthons have been used for automated synthesis of oligonucleotides and corresponding libraries by a phosphite-triester approach. A 54mer, containing 12 randomized internal bases, and a 72mer with 24 internal randomized bases have been synthesized.
authors.affiliation: Shemiakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.
authors.forename: A L
authors.initials: AL
authors.lastname: Kayushin
authors.forename: M D
authors.initials: MD
authors.lastname: Korosteleva
authors.forename: A I
authors.initials: AI
authors.lastname: Miroshnikov
authors.forename: W
authors.initials: W
authors.lastname: Kosch
authors.forename: D
authors.initials: D
authors.lastname: Zubov
authors.forename: N
authors.initials: N
authors.lastname: Piel
mesh_terms: D001435:Bacteriophages / Q000235:genetics; D002851:Chromatography, High Pressure Liquid; D003001:Cloning, Molecular; D004926:Escherichia coli / Q000235:genetics; D007536:Isomerism; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D009838:Oligodeoxyribonucleotides / Q000737:chemistry / Q000235:genetics*; D010455:Peptides / Q000737:chemistry / Q000235:genetics*
chemical_list: D009838:Oligodeoxyribonucleotides; D010455:Peptides