TY - JOUR
T1 - Reaction of the octahedral antitumor complex trans-RuCl2(DMSO)4 with 2′deoxyguanosine
AU - Cauci, Sabina
AU - Viglino, Paolo
AU - Esposito, Gennaro
AU - Quadrifoglio, Franco
PY - 1991/9
Y1 - 1991/9
N2 - The reaction of the antitumor octahedral complex trans-RuCl2(DMSO)4 with 2′deoxyguanosine leads to the reversible formation of two diastereoisomeric monoadducts and one biadduct. This shows that it is possible to accomodate two purine bases in a cis configuration in an octahedral transition metal complex which exhibits antiblastic activity. All the product compounds are characterized by a guanine moiety coordination via the N7 atom. A marked decrease (about two pK units) is observed for the N1H pKa of the coordinated guanine moieties. The reversibility of the monodentate binding could explain the low toxicity of the ruthenium(II) complexes.
AB - The reaction of the antitumor octahedral complex trans-RuCl2(DMSO)4 with 2′deoxyguanosine leads to the reversible formation of two diastereoisomeric monoadducts and one biadduct. This shows that it is possible to accomodate two purine bases in a cis configuration in an octahedral transition metal complex which exhibits antiblastic activity. All the product compounds are characterized by a guanine moiety coordination via the N7 atom. A marked decrease (about two pK units) is observed for the N1H pKa of the coordinated guanine moieties. The reversibility of the monodentate binding could explain the low toxicity of the ruthenium(II) complexes.
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U2 - 10.1016/0162-0134(91)80045-J
DO - 10.1016/0162-0134(91)80045-J
M3 - Article
C2 - 1779229
AN - SCOPUS:0025914901
VL - 43
SP - 739
EP - 751
JO - Journal of Inorganic Biochemistry
JF - Journal of Inorganic Biochemistry
SN - 0162-0134
IS - 4
ER -