SidF, a dual substrate N5-acetyl-N5-hydroxy-L-ornithine transacetylase involved in siderophore biosynthesis.

Siderophore-mediated iron acquisition is essential for the virulence of , a fungus causing life-threatening aspergillosis. Drugs targeting the siderophore biosynthetic pathway could help improve disease management. The transacetylases SidF and SidL generate intermediates for different siderophores in .

Escape from Flatland: Stereoselective Synthesis of Hexa-aryl Borazines and their sp²-Based 3D Architectures.

Borazine and its derivatives can be considered critical doping units for engineering hybrid C(sp2)-based molecules with tailored optoelectronic properties. Herein, we report the first synthesis of hexaarylborazines that, bearing ortho-substituted aryl moieties, extend three-dimensionally. Using a one-pot protocol, we first form an electrophilic chloroborazole and then react it with an aryl lithium (ArLi).

Gold Salts as Alternative Catalysts in Promoting Cascade Condensation of 2-Aminobenzaldehydes with Alcohols and Amines.

The distinctive features of gold self-relay catalysts were alternatively utilized in the intriguing cascade condensation of 2-aminobenzaldehydes with alcohols and amines. Using NaAuCl·2HO as a catalyst, a range of 13-alkyloxy-7,11-dihydro-6,13-6,12-[1,2]benzenoquinazolino[3,4-]quinazoline derivatives was produced in good to high yields through AB condensation of various 2-aminobenzaldehydes with alcohols. By carefully choosing the reaction conditions, gold catalysis also proved effective for AB condensation with primary aryl- and benzylamines, facilitating the synthesis of challenging McGeachin bisaminals, including a chiral nonracemic derivative of 2-()-methylbenzylamine.

Tunable electrochemiluminescence of TADF luminophores: manipulating efficiency and unveiling water-soluble emitters.

Thermally Activated Delayed Fluorescent (TADF) luminophores offer the potential to achieve 100% Internal Quantum Efficiency (IQE) by harvesting both singlet and triplet excitons reverse intersystem crossing from T to S. This class of molecules has therefore been embraced in the pursuit of cheaper and more efficient electrochemiluminescent (ECL) labels. The present study explores how tuning the electron-donating (D) and -accepting (A) strengths of peripheral substituents affects the ECL emission of mono- and dicyanoarene-based TADF dyes.