Stille and suzuki cross coupling reactions of o-nitrophenyl triflates: A versatile route to a variety of heterocycles
The cross coupling reactions of selected o-nitrophenyl triflates with arylstannane and arylboron substrates are reported. The resultant 2-nitrobiphenyls provide ready access to a variety of substituted heterocycles.
Holzapfel, Cedric W.,Dwyer, Catherine
p. 1513 - 1518
(2007/10/03)
Synthesis and antiarrhythmic activity of disubstituted phenylpyridine derivative
A series of disubstituted phenylpyridine derivatives was synthesized and their antiarrhythmic effects against chloroform-induced ventricular arrhythmias in mice were examined. Among them, 2- and 3-[2-(3- aminobutyramido)-4-(2,2,2-trifluoroethoxy)phenyl]pyridines (23h, 24h) and 3- [2-(3-aminobutyramido)-4-ethoxyphenyl]pyridine (24i) showed potent antiarrhythmic activity. They had approximately twice the potency of mexiletine (III). Compound 24i was selected from this series as a candidate for further development; it was found to have a class I B electrophysiological character and to show a slow kinetic rate-dependent block (RDB) of the sodium channel in cardiac muscle.