The Zn(2+) complex of 1,4,7,10-tetraazacyclododecane as an artificial nucleobase |
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Authors: | Laine Maarit Aromaa Maria Virta Pasi Lönnberg Tuomas Poijärvi-Virta Päivi Lönnberg Harri |
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Institution: | Department of Chemistry, University of Turku, Turku, Finland. |
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Abstract: | {2-Deoxy-3-O-2-cyanoethoxy(diisopropylamino)phosphino]-5-O-(4,4'-dimethoxytrityl)-α-D- erythro-pentofuranosyl}-N-{2-4,7,10-tris(2,2,2-trifluoroacetyl)-1,4,7,10-tetraazacyclododecan-1- yl]ethyl}acetamide (1) was prepared and incorporated into a 2'-O-methyl oligoribonucleotide. The hybridization of this oligonucleotide with complementary 2'-O-methyl oligoribonucleotides incorporating one to five uracil bases opposite to the azacrown structure was studied in the absence and presence of Zn(2+). Introduction of Zn(2+) moderately stabilized the duplex with U-bulged targets. |
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