P. Yang et al., [TRANS-EN(2)OS(ETA-H-2)](2-1-NMR PROBE FOR THE COORDINATION OF SOME ANTICANCER METAL-COMPLEXES TO DEOXYGUANOTIDE() AS AN H), Science in China. Series B, Chemistry, life sciences & earth sciences, 40(5), 1997, pp. 541-547
The molecular hydrogen complex of osmium, [trans-en(2)Os(eta-H-2)](2+)
(en, entlylendediamine) is a new H-1 NMR recognition probe for biomole
cules. By using this probe, the coordination between deoxyguanylic aci
d (dGMP) and four metal anticancer complexes, titanocene dichloride, (
C2H5)(2)SnCl2(phen), (C2H5)(2)SnCl2 and cisplatin are studied in D2O u
nder the condition near the physiological one. The results show that t
he former three complexes mainly and strongly coordinate with the phos
phate oxygen of dGMP, while cisplatin mainly coordinates with N(7) of
dGMP.