Zobrazeno 1 - 10
of 36
pro vyhledávání: '"George Boykow"'
Autor:
David G. McLaren, George Boykow, Richard Visconti, Robert W. Myers, Phieng Siliphaivanh, Jeremy Presland, Andrea D. Basso, Xun Chen, Uwe Mueller, Michael Kavana, Steven J. Stout, Kerrie Spencer
Publikováno v:
SLAS discovery : advancing life sciences RD. 22(9)
We have developed and validated label-free, liquid chromatography-mass spectrometry (LC-MS)-based equilibrium direct and competition binding assays to quantitate small-molecule antagonist binding to recombinant human and mouse BLT1 receptors expresse
Autor:
Stan Kurowski, Mariappan V. Chelliah, William J. Greenlee, Madhu Chintala, Yunsheng Hsieh, Yan Xia, George Boykow, Ho-Sam Ahn, Samuel Chackalamannil
Publikováno v:
ACS Medicinal Chemistry Letters. 5:183-187
We have synthesized several C7-aminomethyl analogues of vorapaxar that are potent PAR-1 antagonists. Many of these analogues showed excellent in vitro binding affinity and pharmacokinetics profile in rats. Compound 6a from this series showed excellen
Autor:
Mariappan V. Chelliah, Tze-Ming Chan, Yan Xia, George Boykow, Madhu Chintala, Matthew Bryant, Ho-Sam Ahn, Keith Eagen, Jacqueline Agans-Fantuzzi, William J. Greenlee, Yunsheng Hsieh, Samuel Chackalamannil
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 22:2544-2549
Discovery of a novel nor-seco himbacine analog as potent thrombin receptor (PAR-1) antagonist is described. Despite low plasma level, these new analogs showed excellent ex vivo efficacy in the monkey platelet aggregation assay. A potent hydroxy metab
Autor:
Samuel Chackalamannil, Yan Xia, Hongwu Wang, Michael W. Miller, Charles Lee Jayne, Sarah W. Li, Jean E. Lachowicz, Andrew Stamford, William J. Greenlee, Jack D. Scott, Timothy J. Kowalski, George Boykow, Ruth A. Duffy, Brian D. Spar
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 20:1278-1283
The syntheses and SAR investigations of novel CB(1) receptor antagonists based on a 1,2-diaryl piperidine core have been described. Optimization of this core afforded a compound with robust in vivo potency by reducing food intake in a mouse DIO model
Autor:
Ho-Sam Ahn, Jacqueline Agans-Fantuzzi, Matthew Bryant, Chan Tze-Ming, George Boykow, Yan Xia, Keith Eagen, David Hesk, Madhu Chintala, Mariappan V. Chelliah, Yunsheng Hsieh, Martin C. Clasby, Xiaobang Gao, Jairam Palamanda, William J. Greenlee, Samuel Chackalamannil
Publikováno v:
Journal of Medicinal Chemistry. 50:5147-5160
Pursuing our earlier efforts in the himbacine-based thrombin receptor antagonist area, we have synthesized a series of compounds that incorporate heteroatoms in the C-ring of the tricyclic motif. This effort has resulted in the identification of seve
Autor:
Keith Eagen, Andrew T. McPhail, William J. Greenlee, Yunsheng Hsieh, Madhu Chintala, Samuel Chackalamannil, Yan Lin, Hsingan Tsai, Jayaram R. Tagat, Dario Doller, Ho-Sam Ahn, Yan Xia, George Boykow, Martin C. Clasby, Jacqueline Agans-Fantuzzi, Michael Czarniecki
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 17:3647-3651
The synthesis and biological activity of a novel series of thrombin receptor antagonists is described. This series of compounds showed excellent in vitro and in vivo potency. The most potent compound 40 had an IC(50) of 7.6 nM and showed robust inhib
Autor:
William J. Greenlee, Rumin Zhang, Linda B. Fleming, Ulrich Iserloh, Murali Rajagopalan, Tanweer A. Khan, Rachel E. Giessert, Madhu Chintala, Jesse K. Wong, Brandy Courneya, Peter Orth, Johannes H. Voigt, Liwu Hong, Charles R. Heap, Hongwu Wang, Robert Mazzola, Andrew J. Zych, Thomas Bara, Walter A. Korfmacher, Kristina Moore, Samuel A. Sakwa, Henry M. Vaccaro, Sudipta Roy, John W. Clader, John P. Caldwell, Michael Czarniecki, Ruth A. Duffy, Mckittrick Brian A, Corey Strickland, George Boykow, Ying Huang, Soumya Mitra, Xian Liang, Josien Hubert B
Publikováno v:
Bioorganicmedicinal chemistry letters. 25(7)
The development of renin inhibitors with favorable oral pharmacokinetic profiles has been a longstanding challenge for the pharmaceutical industry. As part of our work to identify inhibitors of BACE1, we have previously developed iminopyrimidinones a
Autor:
George Boykow, Samuel Chackalamannil, Andrew T. McPhail, Hsingan Tsai, William J. Greenlee, Yan Xia, Dario Doller, Ho-Sam Ahn, Michael Czarniecki, Yuguang Wang, Tze-Ming Chan, Keith Eagen
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 16:4969-4972
The structure–activity relationship (SAR) of the lactone ring of himbacine derived thrombin receptor (PAR-1) antagoinsts (e.g., 2 – 5 ) is described. The effect of the lactone carbonyl group on binding to PAR-1 is dependent on the substitution pa
Publikováno v:
Current Pharmaceutical Design. 9:2349-2365
Thrombin, a plasma serine protease, plays a key role not only in coagulation and hemostasis but in thrombosis, restenosis and atherosclerosis. Thrombin activates platelets, endothelium, inflammatory cells and smooth muscle cells. The cellular action
Publikováno v:
Biochemical Pharmacology. 60:1425-1434
A growing body of evidence suggests an important contribution of the cellular actions of thrombin to thrombosis and restenosis following angioplasty. Recently we reported on SCH 79797 ( N 3-cyclopropyl-7-{[4-(1-methylethyl)phenyl]methyl}-7 H -pyrrolo