Palladium-Catalyzed Direct <i>N</i>-Arylation of Nucleosides, Nucleotides, and Oligonucleotides for Efficient Preparation of dG−<i>N</i><sup>2</sup> Adducts with Carcinogenic Amino-/Nitroarenes
A method for direct palladium-catalyzed N-arylation reaction of nucleobases was developed for the convenient synthesis of DNA adducts with carcinogenic compounds. Using xantphos as the phosphine ligand and tetraethylammonium fluoride as the base in DMSO, several o-iodonitroarenes could be efficiently coupled with 2‘-deoxyguanosine, 2‘-deoxyadenosine, and 2‘-deoxycytidine. The presence of a 3‘-phosphate
Synthesis of <i>N</i><i><sup>2</sup></i> 2‘-Deoxyguanosine Adducts Formed by 1-Nitropyrene
作者:Debasis Chakraborti、Laureen Colis、Renee Schneider、Ashis K. Basu
DOI:10.1021/ol034904b
日期:2003.8.1
[reaction: see text] Synthesis of N(2) 2'-deoxyguanosine adducts formed by the ubiquitous carcinogen, 1-nitropyrene, is reported. Various conditions of Buchwald-Hartwig palladium-catalyzed amination are examined. The most convenient synthetic approach involved a straightforward coupling between protected 2'-deoxyguanosine and bromonitropyrenes, which, upon reductive deprotection, provided excellent