Synthesis of (pyridin-2-yl)hydrazine conjugates as bifunctional chelates using the Suzuki–Miyaura reaction
作者:Jeffrey B. Arterburn、Bj K. Bryant、DaJun Chen
DOI:10.1039/b304153k
日期:——
Palladium catalyzed CâC couplings were used to connect (pyridin-2-yl)hydrazine to organic substrates, including a phenylalanine derivative, providing a new method for introducing this important ligand.
Linkage Effects on Binding Affinity and Activation of GPR30 and Estrogen Receptors ERα/β with Tridentate Pyridin-2-yl Hydrazine Tricarbonyl−Re/<sup>99m</sup>Tc(I) Chelates
作者:Chinnasamy Ramesh、Bj Bryant、Tapan Nayak、Chetana M. Revankar、Tamara Anderson、Kathryn E. Carlson、John A. Katzenellenbogen、Larry A. Sklar、Jeffrey P. Norenberg、Eric R. Prossnitz、Jeffrey B. Arterburn
DOI:10.1021/ja066360p
日期:2006.11.1
We describe a new structural class of neutral tridentate pyridin-2-yl hydrazine chelates for labeling with tricarbonyl Re/99mTc(I) under aqueous conditions and investigate the receptor binding of synthetic estradiol derivatives with the novel G-protein-coupled receptor GPR30 and estrogen receptors ERalpha/beta. The steroid linkage affected the affinity and selectivity of estrogen binding with these receptors. Fluorescence assays based on calcium signaling demonstrate that membrane-permeable chelates 2 and 3 interact with the receptors in whole cells. These results suggest that in vitro assays will facilitate the development of targeted imaging agents for intracellular receptors and the feasibility of targeting GPR30 and ERalpha/beta for diagnostic tumor imaging.