189157-45-7Relevant academic research and scientific papers
Synthesis of linked carbohydrates and evaluation of their binding for 16S RNA by mass spectrometry
Wu, Baogen,Yang, Jun,Robinson, Dale,Hofstadler, Steve,Griffey, Rich,Swayze, Eric E.,He, Yun
, p. 3915 - 3918 (2007/10/03)
A library of linked molecules were synthesized from the common sugar moieties existing in the natural amino glycosides. These linked molecules were screened against bacterial 16S RNA for their binding affinity using a mass spectrometry-based technology. Some of these compounds exhibited low micromolar affinity and could serve as leads for further development as antibacterial agents.
Synthesis of 2''-oxidized derivatives of 5-deoxy-5-epi-5-fluoro-dibekacin and -arbekacin, and study on structure-chemical shift relationships of urethane(or amide)-type NH protons in synthetic intermediates
Kobayashi, Yoshihiko,Tsuchiya, Tsutomu
, p. 261 - 277 (2007/10/03)
Three 2''-modified dibekacin-analogs have been prepared as potential compounds active against resistant bacteria producing 2''-O-phosphotransferases; one is 5-deoxy-5,2''-diepi-5-fluorodibekacin (9) prepared from a suitably protected 2''-O-triflyl derivative through the 2'',3''-cyclic carbamate, and the others are 2''-oxo derivatives (12 and 22, both as the hydrate) of 5-deoxy-5-epi-5-fluoro-dibekacin and -arbekacin prepared through oxidation at C-2'' of suitably protected derivatives. Relationships between the t-butoxycarbonyl(= Boc)-NH-shifts of per-N-Boc synthetic intermediates and their structures were studied. It was found that the shifts, measured in pyridine-d5 at 80 °C, which spread over a close range (δ 6-7 ppm), are sensitively influenced by nearby and surrounding groups around the BocNH group in respect of electron-withdrawing character, hydrogen bonding (BocNH ... acceptor), and also solvent effects (BocNH ... NC5H5).
