corresponding polynu-clear complexescontaining Gd3+, Tb3+, or both show superior imaging properties, excellent feasibility for peripheral modi-fication, and unusual kinetic stability. This work can be easily extended to the fabrication of diverse homo-multinuclear complexes and core/shell hetero-multinuclear complexes with multifunctional properties. We expect that this new type of giant molecules and
Tuning the properties of cyclen based lanthanide complexes for phosphodiester hydrolysis; the role of basic cofactors
作者:Ann-Marie Fanning、Sally E. Plush、Thorfinnur Gunnlaugsson
DOI:10.1039/b609923h
日期:——
The synthesis of several cyclen based lanthanide [Eu(III) and La(III)] complexes is described; these metallo ribonuclease mimics are based on the use of alkyl amines as pendent arms, which give rise to fast hydrolysis within the physiological pH range of HPNP (an RNA model compound) that is highly dependent on the length of the alkyl spacer.
An unprecedented strategy to control the quadruplex- vs duplex-DNA selectivity of a ligand is reported. We designed a compound whose structure can rearrange when it interacts with a G-quadruplex, thereby controlling its affinity. Thus, the first "smart G-quadruplex ligand" is reported, since this ligand experiences a structural change in the presence of quadruplexes but not in the presence of duplexes, ensuring a high level of quadruplex selectivity.