The cross-couplingreactions of 3,6-dihalopyridazines with triaryl- or triheteroarylbismuthcompounds were performed under palladium catalysis. The reaction was highly chemoselective, affording functionalized aryl- or heteroarylpyridazinyl chlorides in moderate to good yields.
Synthesis, vasorelaxant activity and 2D-QSAR study of some novel pyridazine derivatives
作者:Riham F. George、Dalia O. Saleh
DOI:10.1016/j.ejmech.2015.12.015
日期:2016.1
Novel 3,6-disubstituted pyridazines were synthesized by facile method and screened for their vasorelaxant properties utilizing isolated thoracic rat aortic rings. Compounds 8a and 11a exerted potent vasorelaxant activity (IC50 = 198 and 177 μM, respectively) relative to doxazosin mesylate (used reference standard, IC50 = 226 μM), that, they may represent promising hits for treatment of cardiovascular