Abstract
Oligonucleotides containing 2′-deoxysangivamycin are described. The phosphoramidite of 2′-deoxytoyocamycin was prepared and used in solid-phase synthesis. Upon deprotection the pyrrolo[2, 3-d]pyrimidine nitrile residues were converted to carboxamides. According to the T m-measurements the 7-carboxamido group of the 7-deazaadenine moiety stabilizes the DNA duplex significantly.
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