14503-28-7Relevant articles and documents
An efficient chemo-enzymatic approach towards variably functionalized benzotropolones
Baisch, Gabi,Wagner, Barbara,?hrlein, Reinhold
experimental part, p. 3742 - 3748 (2010/07/04)
An efficient three-step synthesis for benzotropolones via three catalytic steps is presented. Pyrogallol phenones are formed in the first step starting from pyrogallol, which is acylated by proton-catalysis. Catalytic hydrogenation of the phenones yields the corresponding alkylated pyrogallyl dervatives. In the final enzyme-catalyzed step the pyrogallol derivatives are annulated to form the benzotropolone cores. An alternative pathway via the Pechmann reaction is also presented. The combination of the three catalytic steps gives access to a wide range of benzotropolone congeners.
The synthesis, structure and activity evaluation of pyrogallol and catechol derivatives as Helicobacter pylori urease inhibitors
Xiao, Zhu-Ping,Ma, Tao-Wu,Fu, Wei-Chang,Peng, Xiao-Chun,Zhang, Ai-Hua,Zhu, Hai-Liang
experimental part, p. 5064 - 5070 (2010/12/24)
Some pyrogallol and catechol derivatives were synthesized, and their urease inhibitory activity was evaluated by using acetohydroxamic acid (AHA), a well known Helicobacter pylori urease inhibitor, as positive control. The assay results indicate that many compounds have showed potential inhibitory activity against H. pylori urease. 4-(4-Hydroxyphenethyl)phen-1,2-diol (2a) was found to be the most potent urease inhibitor with IC50s of 1.5 ± 0.2 μM for extracted fraction and 4.2 ± 0.3 μM for intact cell, at least 10 times and 20 times lower than those of AHA (IC50 of 17.2 ± 0.9 μM, 100.6 ± 13 μM), respectively. This finding indicate that 2a would be a potential urease inhibitor deserves further research. Molecular dockings of 2a into H. pylori urease active site were performed for understanding the good activity observed.
