G
George Tonn
Researcher at Amgen
Publications - 29
Citations - 1342
George Tonn is an academic researcher from Amgen. The author has contributed to research in topics: Agonist & In vivo. The author has an hindex of 21, co-authored 29 publications receiving 1238 citations.
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Journal ArticleDOI
The Conduct of in Vitro Studies to Address Time-Dependent Inhibition of Drug-Metabolizing Enzymes: A Perspective of the Pharmaceutical Research and Manufacturers of America
Scott W. Grimm,Heidi J. Einolf,Steven D. Hall,Kan He,Heng-Keang Lim,Kah-Hiing John Ling,Chuang Lu,Amin A. Nomeir,Eleanore Seibert,Konstantine W. Skordos,George Tonn,Robert Van Horn,Regina W. Wang,Y. Nancy Wong,Tian J. Yang,R. Scott Obach +15 more
TL;DR: A team of scientists from 16 pharmaceutical research organizations that are member companies of the Pharmaceutical Research and Manufacturers of America offer a discussion of the phenomenon of TDI with emphasis on the laboratory methods used in its measurement.
Journal ArticleDOI
AMG 837: a potent, orally bioavailable GPR40 agonist.
Jonathan B. Houze,Liusheng Zhu,Ying Sun,Michelle Akerman,Wei Qiu,Alex Zhang,Rajiv Sharma,Michael J. Schmitt,Yingcai Wang,Jiwen Liu,Jinqian Liu,Julio C. Medina,Jeff D. Reagan,Jian Luo,George Tonn,Jane Zhang,Jenny Ying-Lin Lu,Michael Chen,Edwin Lopez,Kathy Nguyen,Yang Li,Liang Tang,Hui Tian,Steven J. Shuttleworth,Daniel C.-H. Lin +24 more
TL;DR: Optimize of a series of β-substituted phenylpropanoic acids led to the identification of (S)-3-(4-((4'-(trifluoromethyl)biphenyl-3-yl)methoxy)phenyl)hex-4-ynoic acid (AMG 837) as a potent GPR40 agonist with a superior pharmacokinetic profile and robust glucose-dependent stimulation of insulin secretion in rodents.
Journal ArticleDOI
SAR and Mode of Action of Novel Non-Nucleoside Inhibitors of Hepatitis C NS5b RNA Polymerase
Jay P. Powers,Derek E. Piper,Yang Li,Veronica Mayorga,John Anzola,James M Chen,Juan C. Jaen,Gary Lee,Jinqian Liu,M Greg Peterson,George Tonn,Qiuping Ye,Nigel Walker,Zhulun Wang +13 more
TL;DR: Novel non-nucleoside inhibitors of the HCV RNA polymerase (NS5b) with sub-micromolar biochemical potency have been identified which are selective for the inhibition of HCV NS5b over other polymerases.
Journal ArticleDOI
AMG 837: A Novel GPR40/FFA1 Agonist that Enhances Insulin Secretion and Lowers Glucose Levels in Rodents
Daniel C.-H. Lin,Jane Zhang,Run Zhuang,Frank Li,Kathy Nguyen,Michael Chen,Thanhvien Tran,Edwin Lopez,Jenny Ying-Lin Lu,Xiaoyan Nina Li,Liang Tang,George Tonn,Gayathri Swaminath,Jeff D. Reagan,Jin-Long Chen,Hui Tian,Yi-Jyun Lin,Jonathan B. Houze,Jian Luo +18 more
TL;DR: Preclinical studies demonstrated that AMG 837 was a potent GPR40 partial agonist which lowered post-prandial glucose levels and support the potential utility of AMG837 for the treatment of type 2 diabetes.
Journal ArticleDOI
Discovery and optimization of a series of quinazolinone-derived antagonists of CXCR3.
Michael Johnson,An-Rong Li,Jiwen Liu,Zice Fu,Liusheng Zhu,Shichang Miao,Xuemei Wang,Qingge Xu,Alan Huang,Andrew P. Marcus,Feng Xu,Karen Ebsworth,Emmanuel Sablan,Jay Danao,Jeff Kumer,Dan Dairaghi,Christopher E. Lawrence,Tim Sullivan,George Tonn,Thomas J. Schall,Tassie L. Collins,Julio C. Medina +21 more
TL;DR: A series of quinazolinone-derived inhibitors of the CXCR3 receptor have been synthesized and their affinity for the receptor evaluated.