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Mixed sugar-core–phosphate chelation of d-fructose 1,6-bisphosphate with the ReVO(tmen) metal fragment†
Martin Steinborn,Mihael Suhanji,Peter Klüfers
Dalton Transactions Pub Date : 02/13/2013 00:00:00 , DOI:10.1039/C3DT32901A
Abstract

Sugar phosphates provide metal-binding sites both at their sugar core and at their phosphate group(s). Mixed sugar-core–phosphate chelation has been considered as a typical bonding mode within the physiological pH range for the central metabolite D-fructose 1,6-bisphosphate. The ReVO(tmen) metal fragment was used to enrich this coordination type. The formation of the [ReO(tmen)(Fruf2,3H−21,6P2H23O2,3,P1)] monoanion was determined by NMR spectroscopy and mass spectrometry. The model compound rac-glycerol 1-phosphate yielded similar results in terms of NMR spectroscopy. Crystal-structure analyses of [ReO(tmen)(rac-Glyc2,3H−21PH-κ3O2,3,P)]·2H2O and [ReO(phen)(rac-Glyc2,3H−21PH-κ3O2,3,P)]·MeOH confirmed the coordination pattern.

Graphical abstract: Mixed sugar-core–phosphate chelation of d-fructose 1,6-bisphosphate with the ReVO(tmen) metal fragment
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