Synthesis of Enzymatically Noncleavable Carbocyclic Nucleosides for DNA−<i>N</i>-Glycosylase Studies
作者:Francis Johnson、Gyorgy Dormán、Robert A. Rieger、Ryuji Marumoto、Charles R. Iden、Radha Bonala
DOI:10.1021/tx9701539
日期:1998.3.1
report the synthesis and incorporation into oligomeric DNA via suitable derivatives, the carbanucleosides 8-oxo-7,8-dihydro-2'-deoxycarbainosine, 8-oxo-7,8-dihydro-2'-deoxycarbaguanosine, and 2'-deoxyaristeromycin. Aristeromycin (1) was deoxygenated at the 2'-position as follows. Treatment of 1 with TPDSCl2 gave the 3',5'-protected derivative 3 (76%) which on phenylthiocarbonylation at the 2'-position
A Carbocyclic Analog of the Oxidatively Generated DNA Lesion Spiroiminodihydantoin
作者:Heiko Müller、Thomas Carell
DOI:10.1002/ejoc.200600982
日期:2007.3
is prone to further oxidation. One-electron oxidants like IrIV oxidize 8-oxo-dG to give secondary lesions such as the spiroiminodihydantoin. This lesion blocks DNA polymerases and induces G T as well as G C transversions. Here, we report the synthesis of a carbocyclicanalog of the 8-oxo-dG lesion and the carbocyclic version of the spiroiminodihydantoin lesion. Both lesion analogs were obtained within