51559-52-5Relevant articles and documents
Pharmacological assessment of sepiapterin reductase inhibition on tactile response in the rat
Meyer, James T.,Sparling, Brian A.,McCarty, William J.,Zhang, Maosheng,Soto, Marcus,Schneider, Stephen,Chen, Hao,Roberts, Jonathan,Tan, Helming,Kornecook, Thomas,Andrews, Paul S.,Knutson, Charles G.
, p. 476 - 486 (2019)
There is an unmet medical need for nonopioid pain therapies in human populations; several pathways are under investigation for possible therapeutic intervention. Tetrahydrobiopterin (BH4) has received attention recently as a mediator of neuropathic pain. Recent reports have implicated sepiapterin reductase (SPR) in this pain pathway as a regulator of BH4 production. To evaluate the role of SPR inhibition on BH4 reduction, we developed analytical methods to monitor the relationship between the plasma concentration of test article and endogenous pterins and applied these in the rat spinal nerve ligation pain model. Sepiapterin is an endogenous substrate, which accumulates upon inhibition of SPR. In response to a potent inhibitor of SPR, plasma concentrations of sepiapterin increased proportionally with exposure. An indirect-effect pharmacokinetic/pharmacodynamic model was developed to describe the relationship between the plasma pharmacokinetics of test article and plasma sepiapterin levels in the rat, which was used to determine an in vivo SPR IC50 value. SPR inhibition and mechanical allodynia were assessed coordinately with pterin biomarkers in plasma and at the site of neuronal injury (i.e., dorsal root ganglion). Upon daily oral administration for 3 consecutive days, unbound plasma concentrations of test article exceeded the unbound in vivo rat SPR IC90 throughout the dose intervals, leading to a 60% reduction in BH4 in the dorsal root ganglion. Despite evidence for pharmacological modulation of the BH4 pathway, there was no significant effect on the tactile paw withdrawal threshold relative to vehicle-treated controls.
Discovery and Optimization of 2 H-1λ2-Pyridin-2-one Inhibitors of Mutant Isocitrate Dehydrogenase 1 for the Treatment of Cancer
Rohde, Jason M.,Karavadhi, Surendra,Pragani, Rajan,Liu, Li,Fang, Yuhong,Zhang, Weihe,McIver, Andrew,Zheng, Hongchao,Liu, Qingyang,Davis, Mindy I.,Urban, Daniel J.,Lee, Tobie D.,Cheff, Dorian M.,Hollingshead, Melinda,Henderson, Mark J.,Martinez, Natalia J.,Brimacombe, Kyle R.,Yasgar, Adam,Zhao, Wei,Klumpp-Thomas, Carleen,Michael, Sam,Covey, Joseph,Moore, William J.,Stott, Gordon M.,Li, Zhuyin,Simeonov, Anton,Jadhav, Ajit,Frye, Stephen,Hall, Matthew D.,Shen, Min,Wang, Xiaodong,Patnaik, Samarjit,Boxer, Matthew B.
, p. 4913 - 4946 (2021/05/07)
Neomorphic mutations in isocitrate dehydrogenase 1 (IDH1) are oncogenic for a number of malignancies, primarily low-grade gliomas and acute myeloid leukemia. We report a medicinal chemistry campaign around a 7,7-dimethyl-7,8-dihydro-2H-1λ2-quinoline-2,5(6H)-dione screening hit against the R132H and R132C mutant forms of isocitrate dehydrogenase (IDH1). Systematic SAR efforts produced a series of potent pyrid-2-one mIDH1 inhibitors, including the atropisomer (+)-119 (NCATS-SM5637, NSC 791985). In an engineered mIDH1-U87-xenograft mouse model, after a single oral dose of 30 mg/kg, 16 h post dose, between 16 and 48 h, (+)-119 showed higher tumoral concentrations that corresponded to lower 2-HG concentrations, when compared with the approved drug AG-120 (ivosidenib).
MACROCYCLIC BROAD SPECTRUM ANTIBIOTICS
-
Paragraph 00638, (2018/09/12)
Provided herein are antibacterial compounds, wherein the compounds in some embodiments have broad spectrum bioactivity. In various embodiments, the compounds act by inhibition of bacterial type 1 signal peptidase (SpsB), an essential protein in bacteria. Pharmaceutical compositions and methods for treatment using the compounds described herein are also provided.
