H-1-, C-13-, and N-15-NMR chemical shifts for selected glucosides and ribosides of aromatic cytokinins

0359282 - ÚEB 2011 RIV GB eng J - Článek v odborném periodiku
Vícha, J. - Maloň, Michal - Veselá, P. - Humpa, O. - Strnad, Miroslav - Marek, R.
H-1-, C-13-, and N-15-NMR chemical shifts for selected glucosides and ribosides of aromatic cytokinins.
Magnetic Resonance in Chemistry. Roč. 48, č. 4 (2010), s. 318-322. ISSN 0749-1581. E-ISSN 1097-458X
Grant CEP: GA ČR GA301/08/1649
Výzkumný záměr: CEZ:AV0Z50380511
Klíčová slova: NMR * H-1 * C-13
Kód oboru RIV: EB - Genetika a molekulární biologie
Impakt faktor: 1.247, rok: 2010

The H-1 and C-13 NMR resonances of 16 purine glucosides were assigned by a combination of one- and two-dimensional NMR experiments, including gs-COSY, gs-HSQC, and gs-HMBC, in order to characterize the effect of substituent and the position of glucose unit on the NMR chemical shifts. In addition, N-15 NMR chemical shifts for selected derivatives were investigated by using H-1-N-15 chemical shift correlation techniques. To map the influence of sugar moiety on the directly bonded nitrogen atom, selected N-9-glucosides and their ribose analogs were compared. Characteristic long-range H-1-N-15 coupling constants, measured by using H-1-N-15 gradient-selected single-quantum multiple bond correlation (GSQMBC), are also reported and discussed. All compounds investigated here belong to cytokinins, an important group of plant hormones.
Trvalý link: http://hdl.handle.net/11104/0197093