unsymmetrical salan fluorescentsensors 2a and 2b have been designed and synthesized. The chiral recognition of N-Boc-protectedaminoacids by 2a and 2b has been investigated. Sensor 2a possesses higher sensitivity and enantioselectivity than sensor 2b does. Job analysis and nonlinear regression results show that 2a can form a 1:1 stoichiometric complex with a N-Boc-protectedaminoacid. The obtained response
Design, synthesis and in vitro cytotoxicity of novel dinuclear platinum(II) complexes
作者:Chuanzhu Gao、Shaohua Gou、Lei Fang、Jian Zhao
DOI:10.1016/j.bmcl.2011.01.064
日期:2011.3
Five dinuclearplatinum(II) complexes with a novel chiral ligand, 2-(((1R,2R)-2-aminocyclohexylamino)methyl)phenol (HL), were designed, prepared and spectrally characterized. In vitro cytotoxicity of all the resulting platinum(II) compounds was evaluated against human HEPG-2, A549 and HCT-116 cell lines, respectively. Results indicated that all compounds showed positive biological activity. Particularly
synthesized. Fluorescent recognition studies of resulting sensors towards mandelicacid (MA) reveal that salan 2a containing (R)-BINOL and (R,R)-DACH exhibits highly sensitive and enantioselective response towards MA. The relationship between the chirality combination and the enantioselectivity is discussed. Based on the studies of concentration and solvent effect on the recognition process of 2a, it was
Synthesis, Characterization and Biological Evaluation of Platinum(II) Complexes with a Chiral N-Monosubstituted 1,2-Cyclohexyldiamine Derivative
作者:Chuanzhu Gao、Shaohua Gou、Gang Xu
DOI:10.1248/cpb.59.851
日期:——
Eight platinum(II) compounds with a new chiral ligand, 2-(((1R,2R)-2-aminocyclohexylamino)methyl)phenol (HL), were designed, prepared and spectrally characterized. All compounds showed better aqueous solubility than cisplatin and oxaliplatin. In vitro cytotoxicity of these compounds against human HepG-2, MCF-7, A549 and HCT-116 cell lines was evaluated. Results indicated that all compounds showed cytotoxicity against A549 and HepG-2 cell lines. Particularly, compounds B1 and B8, which have CF3SO3− and (CH3)3COCH2COO− as leaving groups, respectively, exhibited better cytotoxicitiy than that of carboplatin in these two cell lines.