Discovery of a Novel Class of Potent and Orally Bioavailable Sphingosine 1-Phosphate Receptor 1 Antagonists
摘要:
A series of subtype selective sphingosine 1-phosphate receptor 1 (S1P(1)) antagonists are disclosed. Our high-throughput screening campaign revealed hit 1 for which an increase in potency and mouse oral exposure was achieved with minor modifications to the chemical scaffold. In vivo efficacy revealed that at high doses compounds 12 and 15 inhibited tumor growth. Further optimization of our lead series led to the discovery of proline derivatives 37 (XL541) and 38 which had similar efficacy as our first generation analogues at significantly lower doses. Analogue 37 displayed excellent pharmacokinetics and oral exposure in multiple species.
Design, Synthesis, and Characterization of Brequinar Conjugates as Probes to Study DHODH Inhibition
作者:Joseph T. Madak、Christine R. Cuthbertson、Wenmin Chen、Hollis D. Showalter、Nouri Neamati
DOI:10.1002/chem.201702999
日期:2017.10.9
Brequinar, a potent dihydroorotate dehydrogenase (DHODH) inhibitor, has been evaluated in multiple clinical trials as a potential treatment for cancer. To further understand brequinar‐based DHODH inhibition and DHODH′s therapeutic relevance in cancer, we have developed novel brequinar‐based probes. We disclose a 16‐step convergentsynthesis of the first brequinar‐PROTAC and a four‐step approach towards
Synthesis of Unnatural α‐Amino Acid Derivatives via Light‐Mediated Radical Decarboxylative Processes
作者:Kay Merkens、Francisco José Aguilar Troyano、Jonas Djossou、Adrián Gómez‐Suárez
DOI:10.1002/adsc.202000300
日期:2020.6.15
Unnatural amino acids (UAAs) are key building blocks with widespread application across several scientific fields. Therefore, it is highly attractive to develop straightforward and simple methodologies capable of granting quick access to these species. Herein we report a light‐mediated protocol for the synthesis of UAA via radical decarboxylative processes. This methodology, which employs readily available
Hepatitis C virus inhibitors having the general formula
are disclosed. Compositions comprising the compounds and methods for using the compounds to inhibit HCV are also disclosed.
HCV inhibitors, compositions comprising these compounds as active ingredient, as well as processes for preparing these compounds, of formula:
wherein A is
Pharmaceutical compositions as inhibitors of dipeptidyl peptidase-IV (DPP-IV)
申请人:Akritopoulou-Zanze Irini
公开号:US20050215603A1
公开(公告)日:2005-09-29
The present invention relates to compounds of formula (I),
which inhibit dipeptidyl peptidase IV (DPP-IV) and are useful for the prevention or treatment of diabetes, especially type II diabetes, as well as hyperglycemia, syndrome X, hyperinsulinemia, obesity, atherosclerosis, and various immunomodulatory diseases.