New antiarrhythmic agents. 2,2,5,5-Tetramethyl-3-pyrroline-3-carboxamides and 2,2,5,5-tetramethylpyrrolidine-3-carboxamides.
作者:Olga H. Hankovsky、Kalman Hideg、Ilona Bodi、Laszlo Frank
DOI:10.1021/jm00157a005
日期:1986.7
by forming the Schiffbases and subsequent sodium borohydride reduction. Other tetramethyl-3-pyrrolinecarboxamide compounds were synthesized by acylating the aminoalkyl compounds with 2,2,6,6-tetramethyl-3,5-dibromo-4-piperidinone in a reaction involving Favorskii rearrangement. Saturation of the double bond of some pyrroline derivatives furnished the pyrrolidinecarboxamides. The new compounds of each
A Dual Fluorescence–Spin Label Probe for Visualization and Quantification of Target Molecules in Tissue by Multiplexed FLIM–EPR Spectroscopy
作者:Pin Dong、Johannes Stellmacher、Lydia M. Bouchet、Marius Nieke、Amit Kumar、Ernesto R. Osorio‐Blanco、Gregor Nagel、Silke B. Lohan、Christian Teutloff、Alexa Patzelt、Monika Schäfer‐Korting、Marcelo Calderón、Martina C. Meinke、Ulrike Alexiev
DOI:10.1002/anie.202012852
日期:2021.6.25
goal. The advantages of fluorescencelifetime imaging microscopy (FLIM) for visualization, and electron paramagnetic resonance (EPR) spectroscopy for quantification are complementary. Their combination in a multiplexed approach promises a successful but ambitious strategy because of spin label-mediated fluorescence quenching. Here, we solved this problem and present the molecular design of a dual label
Synthesis of Trityl Radical-Conjugated Disulfide Biradicals for Measurement of Thiol Concentration
作者:Yangping Liu、Yuguang Song、Antal Rockenbauer、Jian Sun、Craig Hemann、Frederick A. Villamena、Jay L. Zweier
DOI:10.1021/jo200265u
日期:2011.5.20
the first synthesis of trityl radical-conjugated disulfide biradicals (TSSN and TSST) as paramagnetic thiol probes. The use of trityl radicals in the construction of these biradicals greatly facilitates thiol measurement by EPRspectroscopy since trityls have extraordinary stability in living tissues with a single narrow EPR line that enables high sensitivity and resolution for in vivo EPR spectroscopy
<sup>19</sup>F NMR indicator displacement assay using a synthetic receptor with appended paramagnetic relaxation agent
作者:Adam J. Plaunt、Kasey J. Clear、Bradley D. Smith
DOI:10.1039/c4cc04159c
日期:——
A 19F NMR indicator displacement assay detects phosphorylated analytes with amplified signal intensity.
一种19F NMR指示剂置换测定法可检测具有放大信号强度的磷酸化分析物。
Synthesis of Hybrid Lipid Probes: Derivatives of Phosphatidylethanolamine-Extended Phosphatidylinositol 4,5-Bisphosphate (Pea-PIP<sub>2</sub>)
作者:Piotr W. Rzepecki、Glenn D. Prestwich
DOI:10.1021/jo011185a
日期:2002.8.1
The total asymmetric synthesis of a novel hybrid lipid possessing a 2,3-diacylthreitol backbone, rather than a 1,2-diacylglycerol backbone, is described. The title compound, Pea-PIP2, possesses a phosphatidylethanolamine (PE) headgroup at the 1-position and a phosphatidylinositol 4,5-bisphosphate (Ptdlns(4,5)P-2) headgroup, at the 4-position. Reporters (biotin, fluorophores, spin label) were covalently attached to the free amino group of the PE, such that these reporters were targeted to the lipid-water interface. The diacyl moieties allow incorporation of Pea-PIP2 into a lipid bilayer, while the PtdIns(4,5)P-2 moiety in the aqueous layer was specifically recognized by PtdIns(4,5)P-2-specific binding proteins.