作者:Kirk L. Stevens、David K. Jung、Michael J. Alberti、Jennifer G. Badiang、Gregory E. Peckham、Jim M. Veal、Mui Cheung、Philip A. Harris、Stanley D. Chamberlain、Michael R. Peel
DOI:10.1021/ol0519745
日期:2005.10.1
[reaction: see text] A convergent synthesis of substitutedpyrazolo[1,5-a]pyridines has been achieved either via a regioselective [3 + 2] cycloaddition of N-aminopyridines with alkynes or by thermal cyclization of disubstituted azirines. Subsequent palladium-catalyzed introduction of pyridines or de novo synthesis of pyrimidines affords inhibitors of p38 kinase.
Fused pyrazole derivatives bieng protein kinase inhibitors
申请人:——
公开号:US20040053942A1
公开(公告)日:2004-03-18
Compounds of Formula (I): salts or solvates or physiologically functional derivatives thereof, wherein Z is CH or N, and R
1
, (R
2
, and R
4
are various substituent groups, are protein kinase inhibitors.
1
Fifteen novel amiloride analogues were synthesized and their diuretic properties compared to amiloride and triamterene in white wistar rats. Whereas none of the 6‐substituted derivatives exhibited significant natriuretic and antikaliuretic effects, five of the compounds modified in the 2‐position were found equal or better than standards. The results are discussed with respect to chemical structure
based on the structures of our previously discovered antiproliferative compounds I and II. Biological evaluation with two humancancercelllines (A549 and HL60) showed that most of these compounds possessed moderate to potent antiproliferative activity. Two potent candidates (8f, IC50 = 2.2 nM and 11d, IC50 = 3.4 nM) were identified with nanomolar activityagainst leukemia cancercell line HL60 for