17859-70-0Relevant academic research and scientific papers
Design of a novel pyrrolidine scaffold utilized in the discovery of potent and selective human β3 adrenergic receptor agonists
Morriello, Gregori J.,Wendt, Harvey R.,Bansal, Alka,Salvo, Jerry Di,Feighner, Scott,He, Jiafang,Hurley, Amanda L.,Hreniuk, Donna L.,Salituro, Gino M.,Reddy, Marat Vijay,Galloway, Sheila M.,McGettigan, Katherine K.,Laws, George,McKnight, Crystal,Doss, George A.,Tsou, Nancy N.,Black, Regina M.,Morris, Judy,Ball, Richard G.,Sanfiz, Anthony T.,Streckfuss, Eric,Struthers, Mary,Edmondson, Scott D.
, p. 1865 - 1870 (2011/05/05)
A novel class of human β3-adrenergic receptor agonists was designed in effort to improve selectivity and metabolic stability versus previous disclosed β3-AR agonists. As observed, many of the β3-AR agonists seem to need th
Synthesis and evaluation of azetidinone analogues of combretastatin A-4 as tubulin targeting agents
O'Boyle, Niamh M.,Carr, Miriam,Greene, Lisa M.,Bergin, Orla,Nathwani, Seema M.,McCabe, Thomas,Lloyd, David G.,Zisterer, Daniela M,Meegan, Mary J.
supporting information; experimental part, p. 8569 - 8584 (2011/02/28)
The synthesis and antiproliferative activity of a new series of rigid analogues of combretastatin A-4 are described which contain the 1,4-diaryl-2-azetidinone (β-lactam) ring system in place of the usual ethylene bridge present in the natural combretastatin stilbene products. These novel compounds are also substituted at position 3 of the β-lactam ring with an aryl ring. A number of analogues showed potent nanomolar activity in human MCF-7 and MDA-MB-231 breast cancer cell lines, displayed in vitro inhibition of tubulin polymerization, and did not cause significant cytotoxicity in normal murine breast epithelial cells. 4-(4-Methoxyaryl)-substituted compound 32, 4-(3-hydroxy-4-methoxyaryl)-substituted compounds 35 and 41, and the 3-(4-aminoaryl)-substituted compounds 46 and 47 displayed the most potent antiproliferative activity of the series. β-Lactam 41 in particular showed subnanomolar activity in MCF-7 breast cancer cells (IC50 = 0.8 nM) together with significant in vitro inhibition of tubulin polymerization and has been selected for further biochemical assessment. These novel β-lactam compounds are identified as potentially useful scaffolds for the further development of antitumor agents that target tubulin.
Design of novel antibiotics that bind to the ribosomal acyltransfer site
Haddad, Jalal,Kotra, Lakshmi P.,Llano-Sotelo, Beatriz,Kim, Choonkeun,Azucena Jr., Eduardo F.,Liu, Meizheng,Vakulenko, Sergei B.,Chow, Christine S.,Mobashery, Shahriar
, p. 3229 - 3237 (2007/10/03)
The structure of neamine bound to the A site of the bacterial ribosomal RNA was used in the design of novel aminoglycosides. The design took into account stereo and electronic contributions to interactions between RNA and aminoglycosides, as well as a ran
Selective, tight-binding inhibitors of integrin α4β1 that inhibit allergic airway responses
Lin, Ko-Chung,Ateeq, Humayun S.,Hsiung, Sherry H.,Chong, Lillian T.,Zimmerman, Craig N.,Castro, Alfredo,Lee, Wen-Cherng,Hammond, Charles E.,Kalkunte, Sandhya,Chen, Ling-Ling,Pepinsky, R. Blake,Leone, Diane R.,Sprague, Andrew G.,Abraham, William M.,Gill, Alan,Lobb, Roy R.,Adams, Steven P.
, p. 920 - 934 (2007/10/03)
Integrin α4β1 mediates leukocyte recruitment, activation, mediator release, and apoptosis inhibition, and it plays a central role in inflammatory pathophysiology. High-affinity, selective inhibitors of α4β1, based on the Leu-Asp-Val (LDV) sequence from the alternatively spliced connecting segment-1 (CS-1) peptide of cellular fibronectin, are described that employ a novel N-terminal peptide 'cap' strategy. One inhibitor, BIO- 1211, was ~106-fold more potent than the starting peptide and exhibited tight-binding properties (k(off) = 1.4 x 10-4 s-1, K(D) = 70 pM), a remarkable finding for a noncovalent, small-molecule inhibitor of a protein receptor. BIO-1211 was also 200-fold selective for the activated form of α4β1, and it stimulated expression of ligand-induced epitopes on the integrin β1 subunit, a property consistent with occupancy of the receptor's ligand-binding site. Pretreatment of allergic sheep with a 3-mg nebulized dose of BIO-1211 inhibited early and late airway responses following antigen challenge and prevented development of nonspecific airway hyperresponsiveness to carbachol. These results show that highly selective and potent small- molecule antagonists can be identified to integrins with primary specificity for peptide domains other than Arg-Gly-Asp (RGD); they confirm the generality of integrins as small molecule targets; and they validate α4β1 as a therapeutic target for asthma.
