515880-84-9Relevant academic research and scientific papers
Structure-activity relationship study of bone morphogenetic protein (BMP) signaling inhibitors
Cuny, Gregory D.,Yu, Paul B.,Laha, Joydev K.,Xing, Xuechao,Liu, Ji-Feng,Lai, Carol S.,Deng, Donna Y.,Sachidanandan, Chetana,Bloch, Kenneth D.,Peterson, Randall T.
supporting information; scheme or table, p. 4388 - 4392 (2009/04/06)
A structure-activity relationship study of dorsomorphin, a previously identified inhibitor of SMAD 1/5/8 phosphorylation by bone morphogenetic protein (BMP) type 1 receptors ALK2, 3, and 6, revealed that increased inhibitory activity could be accomplished by replacing the pendent 4-pyridine ring with 4-quinoline. The activity contributions of various nitrogen atoms in the core pyrazolo[1,5-a]pyrimidine ring were also examined by preparing and evaluating pyrrolo[1,2-a]pyrimidine and pyrazolo[1,5-a]pyridine derivatives. In addition, increased mouse liver microsome stability was achieved by replacing the ether substituent on the pendent phenyl ring with piperazine. Finally, an optimized compound 13 (LDN-193189 or DM-3189) demonstrated moderate pharmacokinetic characteristics (e.g., plasma t1/2 = 1.6 h) following intraperitoneal administration in mice. These studies provide useful molecular probes for examining the in vivo pharmacology of BMP signaling inhibition.
Optimization of a pyrazolo[1,5-a]pyrimidine class of KDR kinase inhibitors: improvements in physical properties enhance cellular activity and pharmacokinetics.
Fraley, Mark E,Rubino, Robert S,Hoffman, William F,Hambaugh, Scott R,Arrington, Kenneth L,Hungate, Randall W,Bilodeau, Mark T,Tebben, Andrew J,Rutledge, Ruth Z,Kendall, Richard L,McFall, Rosemary C,Huckle, William R,Coll, Kathleen E,Thomas, Kenneth A
, p. 3537 - 3541 (2007/10/03)
We have introduced solubilizing functionality to a 3,6-disubstituted pyrazolo[1,5-a]pyrimidine series of KDR kinase inhibitors to improve the physical properties of these compounds. The addition of a basic side-chain to the 6-aryl ring, introduction of 3-pyridyl groups, and most significantly, incorporation of a 4-pyridinonyl substituent at the 6-position of the core are modifications that maintain and often enhance the intrinsic potency of this class of inhibitors. Moreover, the improvements in physical properties result in marked increases in cellular activity and more favorable pharmacokinetics in rats. The synthesis and SAR of these compounds are described.
