273749-25-0Relevant articles and documents
Biomimetic hydrogen-bonding cascade for chemical activation: telling a nucleophile from a base
Park, Hyunchang,Lee, Dongwhan
, p. 590 - 598 (2021)
Hydrogen bonding-assisted polarization is an effective strategy to promote bond-making and bond-breaking chemical reactions. Taking inspiration from the catalytic triad of serine protease active sites, we have devised a conformationally well-defined benzimidazole platform that can be systematically functionalized to install multiple hydrogen bonding donor (HBD) and acceptor (HBA) pairs in a serial fashion. We found that an increasing number of interdependent and mutually reinforcing HBD-HBA contacts facilitate the bond-forming reaction of a fluorescence-quenching aldehyde group with the cyanide ion, while suppressing the undesired Br?nsted acid-base reaction. The most advanced system, evolved through iterative rule-finding studies, reacts rapidly and selectively with CN- to produce a large (>180-fold) enhancement in the fluorescence intensity at λmax = 450 nm.
BENZIMIDAZOLE DERIVATIVES USEFUL AS POTASSIUM CHANNEL INHIBITORS
-
Page/Page column 69; 72; 73, (2019/03/12)
The present invention relates to compounds of the general formula (I). The compounds of formula I are potassium channel inhibitors useful for treatment of a cardiac disease, disorder or condition in a mammal.