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Top shelf dehydration: Ammonium perrhenate catalysts combined with benzylic alcohol reductants are used for the efficient deoxydehydration of glycols to olefins. The olefin and aldehyde products can b...Read More
Heterometallic Cerium(IV) Perrhenate, Permanganate, and Molybdate Complexes Supported by the Imidodiphosphinate Ligand [N(i-Pr2PO)2](-).
Heterometallic cerium(IV) perrhenate, permanganate, and molybdate complexes containing the imidodiphosphinate ligand [N(i-PrPO)] have been synthesized, and their reactivity was investigated. Treatment...Read More
Mixed sugar-core-phosphate chelation of D-fructose 1,6-bisphosphate with the Re(V)O(tmen) metal fragment.
Sugar phosphates provide metal-binding sites both at their sugar core and at their phosphate group(s). Mixed sugar-core-phosphate chelation has been considered as a typical bonding mode within the phy...Read More
Rhenium(V) complexes containing tridentate thiosemicarbazones/thiosemicarbazides (H2L1) derived from N-[N′,N′-dialkylamino(thiocarbonyl)]benzimidoyl chlorides with 4,4-dialkylthiosemicarbazides ha...Read More
Cyclopentadienyl complexes of 99mTc became accessible via a retro Diels-Alder synthetic approach of dimerized cyclopentadiene derivatives. So far, this approach was limited to derivatives comprising a...Read More
Sentinel lymph node biopsy has been accepted as a standard procedure for early stage breast cancer. In this retrospective analysis, the results obtained with different methodological approaches using ...Read More
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No significant improvement in therapy of pancreatic cancer has been reported over the last 25 y, underscoring the urgent need for new alternative therapies. Here, we coupled a radioisotope, (188)Rheni...Read More
Synthesis and structural investigations of gel metal oxide composites WO?-ZrO?, WO?-TiO?, WO?-ZrO?-SiO?, and their evaluation as materials for the preparation of 1??W/1??Re generator.
The gel composites of WO3-ZrO2, WO3-TiO2, WO3-ZrO2-SiO2 at different molar ratios of oxides were synthesized. The elution profiles of the generator columns packed with gel samples activated at the Pol...Read More
The Click-to-Chelate approach is a highly efficient strategy for the radiolabeling of molecules of medicinal interest with technetium and rhenium-tricarbonyl cores. Reaction of azide-functionalized mo...Read More
Novel water-soluble (99m)Tc(I)/Re(I)-porphyrin conjugates as potential multimodal agents for molecular imaging.
The synthesis and characterization of two novel water soluble porphyrins with three meso pyridyl rings and one peripheral chelator - either a diethylenetriamine unit (4) or a bipyridyl fragment (8) - ...Read More
pH-controlled coordination mode rearrangements of "clickable" Huisgen-based multidentate ligands with [M(I)(CO)3]+ (M = Re, (99m)Tc).
The viability of the Huisgen cycloaddition reaction for clickable radiopharmaceutical probes was explored with an alkyne-functionalized 2-[(pyridin-2-ylmethyl)amino]acetic acid (PMAA) ligand system, 3...Read More
In house development of (99m)Tc-Rhenium sulfide colloidal nanoparticles for sentinel lymph node detection.
In this study, rhenium sulfide colloidal nanoparticles were developed as radiopharmaceutical for sentinel lymph node detection. We directly used rhenium sulfide as a starting material for the preparat...Read More
Photo-initiated thiol-ene click reactions as a potential strategy for incorporation of [M(I)(CO)3]+ (M = Re, (99m)Tc) complexes.
Click reactions offer a rapid technique to covalently assemble two molecules. In radiopharmaceutical construction, these reactions can be utilized to combine a radioactive metal complex with a biologi...Read More
Formation of a Metal-to-Nitrogen Bond of Normal Length by a Neutral Sufonamide Group within a Tridentate Ligand. A New Approach to Radiopharmaceutical Bioconjugation.
We demonstrate that a tertiary sulfonamide group, N(SOR)R', can rehybridize to form a M-N bond of normal length even when the group is in a linear tridentate ligand, such as in the new tridentate...Read More
Electrocatalytic properties, X-ray crystallographic studies, and infrared spectroelectrochemistry (IR-SEC) of Mn(bpy-tBu)(CO)Br and [Mn(bpy-tBu)(CO)(MeCN)](OTf) are reported. Addition of Br?nsted acid...Read More
Design, synthesis and structure-activity relationship of rhenium 2-arylbenzothiazoles as β-amyloid plaque binding agents.
To continue our efforts toward the development of (99m)Tc PiB analogs, we have synthesized 24 neutral and lipophilic Re (as a surrogate of (99m)Tc) 2-arylbenzothiazoles, and explored their structure-a...Read More
The "catalytic nitrosyl effect": NO bending boosting the efficiency of rhenium based alkene hydrogenations.
Diiodo Re(I) complexes [ReI2(NO)(PR3)2(L)] (3, L = H2O; 4 , L = H2; R = iPr a, Cy b) were prepared and found to exhibit in the presence of "hydrosilane/B(C6F5)3" co-catalytic systems excelle...Read More
We have studied the adsorption of copper on the clean Re[Formula: see text] surface between 300 and 900?K by means of low- and medium-energy electron diffraction (LEED and MEED) and temperature-progra...Read More
Solid-state thermolysis of a fac-rhenium(I) carbonyl complex with a redox non-innocent pincer ligand.
The development of rhenium(I) chemistry has been restricted by the limited structural and electronic variability of the common pseudo-octahedral products fac-[ReX(CO)3L2] (L2 = α-diimine). We address...Read More
A comparison of Re-188-MN-16ET-lipiodol and transcatheter arterial chemoembolization in the treatment of hepatoma: an animal study.
In patients with unresectable HCC, transcatheter arterial chemoembolization (TACE) is a widely used treatment. Recently, as an alternative treatment modality for HCC, transcatheter arterial embolizati...Read More
Synthesis, characterization and biodistribution of new fatty acids conjugates bearing N,N,N-donors incorporated [(99m)Tc/Re(CO)(3)](+).
[(99m)Tc(CO)(3)](+)-6-[N-(2-dipicolyl)amino]hexanoic acid () and [(99m)Tc(CO)(3)](+)-11-[N-(2-dipicolyl)amino]undecanoic acid () were prepared by incorporating [(99m)Tc-(CO)(3)](+) into 6-[N-(2-dipico...Read More
Effects of sequence, connectivity, and counter ions in new amide-linked Ru(tpy)2-Re(bpy) chromophores on redox chemistry and photophysics.
New cationic metallo ligands L1-L3 based on bis(terpyridine) ruthenium(II) complexes decorated with differently substituted 2,2'-bipyridines attached via amide groups (5-NHCO-bpy, 4-CONH-bpy, 5-C...Read More
Synthesis, characterization, and photophysics of oxadiazole- and diphenylaniline-substituted Re(I) and Cu(I) complexes.
Transition-metal complexes of the types [Re(CO)(3)Cl(NN)], [Re(CO)(3)py(NN)](+), and [Cu(PPh(3))(2)(NN)](+), where NN = 4,4'-bis(5-phenyl-1,3,4-oxadiazol-2-yl)-2,2'-bipyridine (OX) and 4,4...Read More
Trace element profiles in sediments as proxies of dead zone history; rhenium compared to molybdenum.
Warm-season dead zones-volumes of coastal water containing too little O(2) to support macrofauna-are a growing global menace. Trace elements that are deposited in sediments in response to reducing or ...Read More