作者:Ivan D. Kozekov、Lubomir V. Nechev、Ana Sanchez、Constance M. Harris、R. Stephen Lloyd、Thomas M. Harris
DOI:10.1021/tx010127h
日期:2001.11.1
A DNA duplex containing the primary acrolein adduct, 3-(2-deoxy-beta -D-erythro-pentofuranosyl)-5,6,7,8-tetrahydro-8-hydroxypyrimido[1,2-a]purin-10(3H)-one (2), of deoxyguanosine in a 5'-CpG sequence context spontaneously but reversibly formed an interchain cross-link with the exocyclic amino group of deoxyguanosine in the opposing chain. The linkage was sufficiently stable that the cross-linked duplex could be isolated by HPLC and characterized by MALDI-TOF mass spectrometry. Enzymatic degradation gave his-nucleoside 6, which was independently prepared by direct reaction of 2 with dGuo.