Triazole Appending Agent (TAAG): A New Synthon for Preparing Iodine-Based Molecular Imaging and Radiotherapy Agents
作者:Alla Darwish、Megan Blacker、Nancy Janzen、Stephanie M. Rathmann、Shannon Czorny、Shawn M. Hillier、John L. Joyal、John W. Babich、John F. Valliant
DOI:10.1021/ml300003v
日期:2012.4.12
A new prosthetic group referred to as the triazole appending agent (TAAG) was developed as a means to prepare targeted radioiodine-based molecular imaging and therapy agents. Tributyltin-TAAG and the fluorous analogue were synthesized in high yield using simple click chemistry and the products labeled in greater than 95% RCY with I-123. A TAAG derivative of an inhibitor of prostate-specific membrane antigen was prepared and radiolabeled with I-123 in 85% yield where biodistribution studies in LNCap prostate cancer tumor models showed rapid clearance of the agent from nontarget tissues and tumor accumulation of 20% injected dose g(-1) at 1 h. The results presented demonstrate that the TAAG group promotes minimal nonspecific binding and that labeled conjugates can achieve high tumor uptake and exquisite target-to-nontarget ratios.
METHODS OF PREPARING TRIAZOLE-CONTAINING RADIOIODINATED COMPOUNDS
申请人:Valliant John
公开号:US20140065070A1
公开(公告)日:2014-03-06
The present application relates to methods of preparing radiohalogenated compounds, to compounds useful in such methods and to radiohalogenated compounds useful for imaging and/or therapy. In particular, the present application relates to methods of preparing radiohalogenated compounds of Formula I, to compounds useful in such methods and to radiohalogenated compounds of Formula I: