title: A new concept for DNA-arrays.
abstract: We will insert a cleavage site in an oligodeoxynucleotide, which can be used for a selective and quantitative cleavage. For that reason we synthesized the four 5'-S-(4,4'-dimethoxytrityl)-mercapto-2'-deoxynucleotide-3'-O-(2-cyanoethoxydiisopropylamino)-phosphites (5a-d). The cleavage of P-S and C-S bonds is described (Mag, M.; Lücking, S.; Engels, J.W. Synthesis and selective cleavage of an oligodeoxy-nucleotide containing a bridged internucleotide 5'-phosphorthioate linkage. Nucleic Acids Res. 1991, 19 (7), 1437-1441; Marriott, J.H.; Mottahedeh, M.; Reese, C.B. 9-(4-methoxyphenyl)xanthen-9-thiol: A useful reagent for the preparation of thiols. Tetrahedron Lett. 1990, 31 (51), 7485-7488; Divakar, K.J.; Mottoh, A.; Reese, C.B.; Shanghvi, Y.S. Approaches to the synthesis of 2' thio analogues of pyrimidine ribosides. J. Chem. Sc., Perkin Trans. 1 1990, 969-974). The oligodeoxynucleotides with an achiral bridged 5'-phosphorothioate linkage 5'-O-P-S-3' are synthesized by the phosphoramidite procedure.
authors.affiliation: Institut für Organische Chemie und Chemische Biologie, Johann-Wolfgang-Goethe Universität, Frankfurt am Main, Germany.
authors.forename: Kerstin
authors.initials: K
authors.lastname: Jahn-Hofmann
authors.forename: Nancy
authors.initials: N
authors.lastname: Holzhey
authors.forename: Thomas
authors.initials: T
authors.lastname: Ellinger
authors.forename: Joachim W
authors.initials: JW
authors.lastname: Engels
mesh_terms: D001483:Base Sequence; D007202:Indicators and Reagents; D009838:Oligodeoxyribonucleotides / Q000138:chemical synthesis / Q000737:chemistry*; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods; D017905:Phosphites
chemical_list: D007202:Indicators and Reagents; D009838:Oligodeoxyribonucleotides; D017905:Phosphites