First commercial sales of lutetium-177 based on IOCB separation technology
18 November 2020
SHINE Medical Technologies has made its first commercial sales of lutetium-177 to customers. Lutetium-177, or Lu-177, was produced with the use of separation technology developed…
Enzymatic synthesis of hypermodified DNA
6 November 2020
A team of researchers, led by Michal Hocek with Marek Ondruš as the first author, described in the journal Nucleic Acids Research the development of an approach for the enzymatic…
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Closed Shell Iron(IV) Oxo Complex with an Fe–O Triple Bond: Computational Design, Synthesis, and Reactivity
Angewandte Chemie International Edition 2020: Early View
Iron(IV)‐oxo intermediates in nature contain two unpaired electrons in the Fe–O antibonding orbitals, which are thought to contribute to their high reactivity. To challenge this hypothesis, we designed and synthesized closed‐shell singlet iron(IV) oxo complex [(quinisox)Fe(O)]+ (1+; quinisox‐H: (N‐(2‐(2‐isoxazoline‐3‐yl)phenyl)quinoline‐8‐carboxamide). We identified the quinisox ligand by DFT computational screening out of over 450 candidates. After the ligand synthesis, we detected 1+ in the gas phase and confirmed its spin state by visible and infrared photodissociation spectroscopy (IRPD). The Fe–O stretching frequency in 1+ is 960.5 cm−1, consistent with an Fe–O triple bond, which was also confirmed by multireference calculations. The unprecedented bond strength is accompanied by high gas‐phase reactivity of 1+ in oxygen atom transfer (OAT) and in proton‐coupled electron transfer reactions. This challenges the current view of the spin‐state driven reactivity of the Fe–O complexes.
Photocaged 5-(Hydroxymethyl)pyrimidine Nucleoside Phosphoramidites for Specific Photoactivatable Epigenetic Labeling of DNA
Organic Letters 2020: Early View
Functional identification of potential non-canonical N-glycosylation sites within Cav3.2 T-type calcium channels
Molecular Brain 13: 149 (2020)
Direct Introduction of an Alkylsulfonamido Group on C-sites of Isomeric Dicarba-closo-dodecaboranes: The Influence of Stereochemistry on Inhibitory Activity against the Cancer-Associated Carbonic Anhydrase IX Isoenzyme
Chemistry - A European Journal 2020: Early View