7617-76-7Relevant articles and documents
Aqueous olefin hydroformylation using water-soluble mono- and trinuclear N,O-chelate rhodium(I)-aryl ether precatalysts
Goosen, Neill J.,Siangwata, Shepherd,Smith, Gregory S.
, (2020)
Water-soluble, sulfonated, salicylaldiminato-aryl ether mono- (7) and trimeric (8) ligands were prepared and reacted with the [Rh(μ-Cl)(η2:η2?COD)]2 dimer to yield the corresponding water-soluble mononuclear (9) and trinuc
Direct Primary Amination of Alkylmetals with NH-Oxaziridine
Behnke, Nicole Erin,Kielawa, Russell,Kwon, Doo-Hyun,Ess, Daniel H.,Kürti, László
supporting information, p. 8064 - 8068 (2019/01/04)
A method for the primary electrophilic amination of primary, secondary, and tertiary organometallic substrates from a bench-stable NH-oxaziridine reagent is described. This facile and highly chemoselective transformation occurs at ambient temperature and without transition metal catalysts or purification by column chromatography to provide alkylamine products in a single step. Density functional theory (DFT) calculations revealed that, despite the basicity of alkylmetals, the direct NH-transfer pathway is favored over proton and O-transfer.
Synthesis, biological evaluation of 9-N-substituted berberine derivatives as multi-functional agents of antioxidant, inhibitors of acetylcholinesterase, butyrylcholinesterase and amyloid-β aggregation
Shan, Wen-Jun,Huang, Ling,Zhou, Qi,Meng, Fan-Chao,Li, Xing-Shu
experimental part, p. 5885 - 5893 (2012/01/04)
A series of 9-N-substituted berberine derivatives were synthesized and biologically evaluated as antioxidant and inhibitors of acetylcholinesterase (AChE), butyrylcholinesterase and amyloid-β aggregation. Most of these compounds exhibited very good antioxidant activities, inhibitive activities of AChE and amyloid-β aggregation. Among them, compound 8d, (o-methylphenethyl)amino linked at the 9-position of berberine, was found to be a good antioxidant (with 4.05 μM of Trolox equivalents), potent inhibitor of AChE (an IC50 value of 0.027 μM), and high active inhibitor of amyloid-β aggregation (an IC50 value of 2.73 μM).