A series of γ-oxo esters suitably substituted with various styrene subunits was subjected to samarium diiodide-induced 8-endo-trig cyclizations. Efficacy, regioselectivity and stereoselectivity of these reactions via samarium ketyls strongly depend on the substitution pattern of the attacked alkene moiety. The stereoselectivity of the protonation of the intermediate samariumorganyl is also infl...

Introduction: The therapy with radioisotopes is widely used, its beginnings were focused on thyroid pathologies treatments. Over the years, radiopharmaceuticals and/or have had their usage increased, to be used painful bone metastasis. Material and Methods: A bibliographic search was conducted in major health Science basis evaluate what therapies offer for patients this condition. Results: Curr...

High quality phase pure samarium monosulfide (SmS) thin films were prepared by electron beam evaporation using a samarium metal source in a H(2)S atmosphere. The optical properties (reflection, transmission, absorption) of the films in the semiconducting and metallic phase were analysed from the UV to the mid-IR and explained in terms of the electronic structure of SmS. In this paper it will be...

Development of lanthanide detoxification agents and protocols is of great importance in management of overdoses. Due to safety of maltol as a detoxifying agent in metal overloads, it can be used as a lanthanide detoxifying agent. In order to demonstrate the biodistribution of final complex, [(153)Sm]-samarium maltolate was prepared using Sm-153 chloride (radiochemical purity >99.9%; ITLC and sp...

Objectives: The goals of this investigation are to determine whether commercially available dose calibrators can be used to measure the activity of -emitting radionuclides used in pain palliation and to establish whether manufacturer-supplied calibration factors are appropriate for this purpose. Methods: Six types of commercially available dose calibrators were studied. Dose calibrator response...

OBJECTIVE Magnetic resonance techniques have recently been investigated as tools with which to monitor inflammatory joint disease. Our aim was to use a contrast-enhanced T1-weighted protocol to monitor the short-term changes in knee synovial lining volume in a double-blind, randomized, controlled trial of intra-articular samarium-153 particulate hydroxyapatite (Sm-153 PHYP). METHODS Twenty-fo...

Bismuth ferrite (BiFeO3 or BFO) has recently been intensively investigated due to its ability to exhibit a rare combination of both ferroelectric and antiferromagnetic ordering at room temperature [1]. Current literature shows that several solid solutions between BFO and rare-earth (La, Nd, Sm, Gd) ferrites, exhibit morphotropic phase boundary (MPB) between a polar (rhombohedral) and non-polar ...

Samarium diiodide (SmI2) smoothly promotes the cyclizations of suitably substituted carbonyl compounds with styrene subunits leading to benzannulated cyclooctenes. The intramolecular samarium ketyl addition to arene or hetarene moieties enables a new, efficient, and highly stereoselective entry to dearomatized products such as hexahydronaphthalenes, steroid-like tetraor pentacyclic compounds, o...