title: Oxidorhenium(V) complexes with L-histidine and pyranosides.
abstract: The reaction of the oxidorhenium(V) precursor [ReOCl(3)(PPh(3))(2)] with the proteinogenic amino acid L-histidine (L-hisH) and the glycosides methyl alpha-D-mannopyranoside (Me-alpha-D-Manp) and methyl beta-D-ribopyranoside (Me-beta-D-Ribp) in methanol/triethylamine yielded the crystalline compounds [ReO(L-his)(Me-alpha-D-Manp2,3H(-2))] x 2MeOH (1) and [ReO(L-his)(Me-beta-D-Ribp3,4H(-2))] x (1/2)MeOH (2). The mixed-ligand complexes based on the Re(V)O moiety were characterised by single-crystal X-ray diffraction, NMR spectroscopy, elemental analysis and mass spectrometry. Both complexes are hydrolytically stable over prolonged periods of time and are accessible also by a purely aqueous route by replacing the rhenium(V) precursor with a perrhenate/reductant couple.
authors.affiliation: Department für Chemie und Biochemie, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377, München, Germany.
authors.forename: Philipp
authors.initials: P
authors.lastname: Grimminger
authors.forename: Peter
authors.initials: P
authors.lastname: Klüfers
mesh_terms: D006027:Glycosides / Q000737:chemistry*; D006639:Histidine / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D009942:Organometallic Compounds / Q000737:chemistry*; D012211:Rhenium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D006027:Glycosides; D009942:Organometallic Compounds; D006639:Histidine; D012211:Rhenium