Gold(III) compounds of 1,4,7-triazacyclononane showing high cytotoxicity against A-549 and HCT-116 tumor cell lines.
Two gold(III) compounds [Au(TACN)Cl(2)]Cl (1) and [Au(TACN)Cl(2)][AuCl(4)] (2) (where TACN=1,4,7-triazacyclononane), have been synthesized and characterized by electrospray ionization mass spectrometry (ESI-MS), (1)H NMR spectroscopy and elemental analyses. The structure of compound 2 was determined by X-ray crystallography, in which TACN coordinates to the gold(III) center in a bidentate mode and the unbound amine group forms a very short intramolecular Au-H(-N) contact (1.91A). Biological activity data showed that compound 1 is more cytotoxic than cisplatin against A-549 and HCT-116 tumor cell lines. The interactions of compound 1 with CT-DNA were studied by UV-Vis, fluorescence and CD spectroscopy, which suggests that compound 1 can induce the distortion of DNA double helix.
Shi
Pengfei
P
State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, PR China.
Jiang
Qin
Q
Lin
Jun
J
Zhao
Yongmei
Y
Lin
Liping
L
Guo
Zijian
Z
D000970:Antineoplastic Agents / Q000737:chemistry / Q000494:pharmacology*; D045744:Cell Line, Tumor; D002942:Circular Dichroism; D018360:Crystallography, X-Ray; D004354:Drug Screening Assays, Antitumor; D017612:Gold Compounds / Q000737:chemistry / Q000494:pharmacology*; D006571:Heterocyclic Compounds / Q000737:chemistry / Q000494:pharmacology*; D006801:Humans; D013050:Spectrometry, Fluorescence; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet
D000970:Antineoplastic Agents; D017612:Gold Compounds; D006571:Heterocyclic Compounds; C075712:1,4,7-triazacyclononane