中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-[4,7-di(tert-butyloxycarbonyl)-1,4,7-triazacyclononan-1-yl]ethylamine | 924644-86-0 | C18H36N4O4 | 372.508 |
—— | 7-(2-azidoethyl)-1,4-bis(tert-butoxycarbonyl)-1,4,7-triazacyclononane | 1192597-08-2 | C18H34N6O4 | 398.506 |
—— | Ditert-butyl 7-(2-aminoacetyl)-1,4,7-triazonane-1,4-dicarboxylate | 827596-31-6 | C18H34N4O5 | 386.492 |
—— | 4,7-N,N-di-tertbutyloxycarbonyl-1-N-(6-aminohexyl)-1,4,7-triazacyclononane | —— | C22H44N4O4 | 428.616 |
—— | Ditert-butyl 7-[2-(phenylmethoxycarbonylamino)acetyl]-1,4,7-triazonane-1,4-dicarboxylate | 827596-30-5 | C26H40N4O7 | 520.626 |
—— | 7-(6-benzyloxycarbonylamino-hexyl)-1,4,7-triazonane-1,4-dicarboxylic acid di-tert-butyl ester | 528840-32-6 | C30H50N4O6 | 562.75 |
—— | 1,4-bis(tert-butoxycarbonyl)-7-(4-methylphenyl)-1,4,7-triazacyclononane | 1439371-37-5 | C23H37N3O4 | 419.564 |
A series of 2-nm gold nanoparticles passivated with different thiols all featuring at least one triazacyclonanone-Zn(II) complex and different flanking units (a second Zn(II) complex, a triethyleneoxymethyl derivative or a guanidinium of arginine of a peptide) were prepared and studied for their efficiency in the cleavage of the RNA-model substrate 2-hydroxypropyl-p-nitrophenyl phosphate. The source of catalysis for each of them was elucidated from the kinetic analysis (Michaelis–Menten profiles, pH dependence and kinetic isotope effect). The data indicated that two different mechanisms were operative: One involving two Zn(II) complexes and the other one involving a single Zn(II) complex and a flanking guanidinium cation. The mechanism based on a dinuclear catalytic site appeared more efficient than the one based on the cooperativity between a metal complex and a guanidinium.
Oligomers with an aromatic backbone showed highly improved gene transfection efficiency compared to 25 kDa PEI.