NMR
In Prague (Inst.Microbiol.) NMR spectra were recorded with a Bruker Avance III 400 MHz spectrometer (400.13MHz for 1H, 100.55 MHz for ) , a Bruker Avance III 600 MHz spectrometer (600.23 MHz for 1H, 150.93 MHz for 13C at 30◦C) and a Bruker Avance III 700 MHz spectrometer (700.13MHz for 1H, 176.05MHz for 13C at30◦C) in DMSO-d6 (99.9 atom%D, Sigma-Aldrich).