Kl. Chan et al., NMR CHARACTERIZATION OF GUANINE DNA SITE ALKYLATED BY KAPURIMYCIN A3,AN ANTITUMOR ANTIBIOTIC FROM STREPTOMYCES SP, Phytochemistry, 40(5), 1995, pp. 1373-1374
The kapurimycin A3-guanine adduct was formed by alkylation of the anti
tumour antibiotic with d(CGCG)(2). The site of alkylation of the guani
ne was confirmed by comparative NMR studies with N-7-methyl-guanine in
DMSO-d(6).