Regioselective N-substitution of cyclen with two different alkyl groups: synthesis of all possible isomersElectronic supplementary information (ESI) available: spectroscopic data. See http://www.rsc.org/suppdata/cc/b2/b212667b/
The computation of lipophilicities of 64Cu PET systems based on a novel approach for fluctuating charges
作者:Peter Comba、Bodo Martin、Avik Sanyal、Holger Stephan
DOI:10.1039/c3dt51049b
日期:——
A QSPR scheme for the computation of lipophilicities of 64Cu complexes was developed with a training set of 24 tetraazamacrocylic and bispidine-based CuII compounds and their experimentally available 1-octanol–water distribution coefficients. A minimum number of physically meaningful parameters were used in the scheme, and these are primarily based on data available from molecular mechanics calculations, using an established force field for CuII complexes and a recently developed scheme for the calculation of fluctuating atomic charges. The developed model was also applied to an independent validation set and was found to accurately predict distribution coefficients of potential 64Cu PET (positron emission tomography) systems. A possible next step would be the development of a QSAR-based biodistribution model to track the uptake of imaging agents in different organs and tissues of the body. It is expected that such simple, empirical models of lipophilicity and biodistribution will be very useful in the design and virtual screening of positron emission tomography (PET) imaging agents.
Regioselective N-substitution of cyclen with two different alkyl groups: synthesis of all possible isomersElectronic supplementary information (ESI) available: spectroscopic data. See http://www.rsc.org/suppdata/cc/b2/b212667b/
作者:Jeongsoo Yoo、David E. Reichert、Michael J. Welch
DOI:10.1039/b212667b
日期:2003.3.6
All possible configurations of two different groups on the four nitrogen atoms of cyclen were achieved using four differently protected cyclen intermediates including the novel mono-protected cyclen compound, mono-N-Cbz-cyclen.
Comparative in Vivo Behavior Studies of Cyclen-Based Copper-64 Complexes: Regioselective Synthesis, X-ray Structure, Radiochemistry, log <i>P</i>, and Biodistribution
作者:Jeongsoo Yoo、David E. Reichert、Michael J. Welch
DOI:10.1021/jm0496990
日期:2004.12.1
number of acetate groups increased, the lipophilicity was decreased. The biodistribution of Cu-cyclen complexes was found to be influenced mostly by the overall charge of the complexes rather than their lipophilicity. Positively charged (+2) complexes showed high blood retention at early time points with sluggish clearance from liver by 24 h. The attachment of even one acetate group onto cyclen accelerated