The computation of lipophilicities of ⁶⁴Cu PET systems based on a novel approach for fluctuating charges.

The computation of lipophilicities of ⁶⁴Cu PET systems based on a novel approach for fluctuating charges.
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基于波动电荷的新方法计算“Cu PET”系统的亲脂性

DOI:
10.1039/c3dt51049b
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发表时间:
2013
影响因子:
4
通讯作者:
Stephan
Stephan
中科院分区:
化学2区
文献类型:
--
作者:
Martin;Sanyal;Stephan

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使用24种基于四氮杂大环和双吡啶的CuII化合物及其实验可用的1-辛醇-水分配系数的训练集开发了计算64 Cu配合物亲脂性的QSPR方案。在该方案中使用了最少数量的物理意义的参数,这些主要是基于分子力学计算的数据,使用一个既定的力场CuII配合物和最近开发的计划波动的原子电荷的计算。所开发的模型也适用于一个独立的验证集,并被发现准确地预测潜在的64铜PET(正电子发射断层扫描)系统的分布系数。下一步可能是开发基于QSAR的生物分布模型,以跟踪身体不同器官和组织中显像剂的摄取。预计这种亲脂性和生物分布的简单经验模型将在正电子发射断层扫描(PET)成像剂的设计和虚拟筛选中非常有用。
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.
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