138408-37-4Relevant academic research and scientific papers
Thermal 1,3-Trityl migrations in diels-alder domino reactions of 1-Trityl-4-vinyl-1 H-imidazoles
Cotterill, Lynsey J.,Harrington, Ross W.,Clegg, William,Hall, Michael J.
, p. 4604 - 4607 (2010)
(Figure presented) Under thermal conditions, tritylimidazoles have been shown to undergo sterically driven N→N trityl migrations, in disagreement with previously published reports. These migrations are a key step in several highly diastereoselective domin
Discovery and Lead-Optimization of 4,5-Dihydropyrazoles as Mono-Kinase Selective, Orally Bioavailable and Efficacious Inhibitors of Receptor Interacting Protein 1 (RIP1) Kinase
Harris, Philip A.,Faucher, Nicolas,George, Nicolas,Eidam, Patrick M.,King, Bryan W.,White, Gemma V.,Anderson, Niall A.,Bandyopadhyay, Deepak,Beal, Allison M.,Beneton, Veronique,Berger, Scott B.,Campobasso, Nino,Campos, Sebastien,Capriotti, Carol A.,Cox, Julie A.,Daugan, Alain,Donche, Frederic,Fouchet, Marie-Hélène,Finger, Joshua N.,Geddes, Brad,Gough, Peter J.,Grondin, Pascal,Hoffman, Bonnie L.,Hoffman, Sandra J.,Hutchinson, Susan E.,Jeong, Jae U.,Jigorel, Emilie,Lamoureux, Pauline,Leister, Lara K.,Lich, John D.,Mahajan, Mukesh K.,Meslamani, Jamel,Mosley, Julie E.,Nagilla, Rakesh,Nassau, Pamela M.,Ng, Sze-Ling,Ouellette, Michael T.,Pasikanti, Kishore K.,Potvain, Florent,Reilly, Michael A.,Rivera, Elizabeth J.,Sautet, Stéphane,Schaeffer, Michelle C.,Sehon, Clark A.,Sun, Helen,Thorpe, James H.,Totoritis, Rachel D.,Ward, Paris,Wellaway, Natalie,Wisnoski, David D.,Woolven, James M.,Bertin, John,Marquis, Robert W.
supporting information, p. 5096 - 5110 (2019/05/22)
RIP1 kinase regulates necroptosis and inflammation and may play an important role in contributing to a variety of human pathologies, including inflammatory and neurological diseases. Currently, RIP1 kinase inhibitors have advanced into early clinical trials for evaluation in inflammatory diseases such as psoriasis, rheumatoid arthritis, and ulcerative colitis and neurological diseases such as amyotrophic lateral sclerosis and Alzheimer's disease. In this paper, we report on the design of potent and highly selective dihydropyrazole (DHP) RIP1 kinase inhibitors starting from a high-throughput screen and the lead-optimization of this series from a lead with minimal rat oral exposure to the identification of dihydropyrazole 77 with good pharmacokinetic profiles in multiple species. Additionally, we identified a potent murine RIP1 kinase inhibitor 76 as a valuable in vivo tool molecule suitable for evaluating the role of RIP1 kinase in chronic models of disease. DHP 76 showed efficacy in mouse models of both multiple sclerosis and human retinitis pigmentosa.
Synthesis of 7-15N-oroidin and evaluation of utility for biosynthetic studies of pyrrole-imidazole alkaloids by microscale 1H-15N HSQC and FTMS
Wang, Yong-Gang,Morinaka, Brandon I.,Reyes, Jeremy Chris P.,Wolff, Jeremy J.,Romo, Daniel,Molinski, Tadeusz F.
supporting information; experimental part, p. 428 - 434 (2010/08/06)
Numerous marine-derived pyrrole-imidazole alkaloids (PIAs), ostensibly derived from the simple precursor oroidin, 1a, have been reported and have garnered intense synthetic interest due to their complex structures and in some cases biological activity; however very little is known regarding their biosynthesis. We describe a concise synthesis of 7-15N-oroidin (Id) from urocanic acid and a direct method for measurement, of 15N incorporation by pulse labeling and analysis by 1D 1H-15N HSQC NMR and FTMS. Using a mock pulse labeling experiment, we estimate the limit of detection (LOD) for incorporation of newly biosynthesized PIA by 1D 1H-15N HSQC to be 0.96 μg equivalent of 15N-oroidin (2.4 nmole) in a background of 1500 μg of unlabeled oroidin. (about 1 part per 1600). 7-15N-Oroidin will find utility in biosynthetic feeding experiments with live sponges to provide direct information to clarify the pathways leading to more complex pyrrole-imidazole alkaloids.
Meta-substituted aryl(thio)ethers as potent partial agonists (or antagonists) for the histamine H3 receptor lacking a nitrogen atom in the side chain
Pelloux-Léon, Nadia,Fkyerat, Abdellatif,Piripitsi, Antonia,Tertiuk, Wasyl,Schunack, Walter,Stark, Holger,Garbarg, Monique,Ligneau, Xavier,Arrang, Jean-Michel,Schwartz, Jean-Charles,Ganellin, C. Robin
, p. 3264 - 3274 (2007/10/03)
4-(3-Aryloxypropyl)-1H-imidazoles, which possess a meta-positioned substituent in the aryl ring, have been synthesized and tested for activity at histamine H3 receptors. The compounds having a CN, Me, or Br substituent were found to be antagoni
New building blocks for fluorinated bioimidazole derivatives II: Preparation of β-fluorourocanic acids
Dolensky, Bohumil,Kirk, Kenneth L.
, p. 3468 - 3473 (2007/10/03)
Replacement of vinyl hydrogen with fluorine is based on addition of an FBr equivalent to a double bond followed by HBr elimination. This sequence has been adapted to prepare 3-fluoro-3-imidazolylpropenoic acids (β-fluorourocanic acids), and the related fl
A new type of carboxypeptidase A inhibitors designed using an imidazole as a zinc coordinating ligand
Lee, Kyung Joo,Joo, Keum Chan,Kim, Eun-Jung,Lee, Mijoon,Kim, Dong H.
, p. 1989 - 1998 (2007/10/03)
2-(4-Imidazoyl)hydrocinnamic acid (1) and its congeners (2-4) having different length of alkyl chain spacers between the imidazole ring and the α-carbon to the carboxylate of 1 have been designed, synthesized and evaluated as inhibitors for carboxypeptidase A to show that they are competitive inhibitors for the enzyme. Inhibitor 1 was most potent having the K(i) value of 0.8 μM. The present study demonstrates that imidazole ring is an effective zinc coordinating ligand that can be useful for the design of inhibitors for zinc proteases.
Synthesis of (Z)- and (E)-3-(1H-imidazol-4-yl)-2-propenamine and some 3-(1H-imidazol-4-yl)propanamines
Sellier, Christian,Buschauer, Armin,Elz, Sigurd,Schunack, Walter
, p. 317 - 324 (2007/10/02)
3-(1H-Imidazol-4-yl)propanamine (6, homohistamine), an essential intermediate for the synthesis of potent impromidine-type histamine H2 receptor agonists, is efficiently prepared from trans-urocanic acid (1) by reduction of the methyl ester 2 and conversion to the saturated amide 4.Dehydration with thionyl chloride yields the nitrile 5 which is subsequently reduced to 6.Side-chain methylated 3-(1H-imidazol-4-yl)propanamines 12 are available from 1H-imidazole-4-carbaldehyde (7) and 1-(1H-imidazol-4-yl)ethanone (8), respectively, via unsaturated nitriles 10 and stepwise reduction.Cyclization of the appropiate 4-bromo-5-oxohexanenitriles 14α with formamidine in liquid ammonia and reduction of the obtained nitriles 15 furnishes ring-methylated amines 16. (E)-3-(1H-Imidazol-4-yl)-2-propenamine is obtained in six steps from the trans-ester 2 while (Z)-23 is accessible by treating 7 with triphenyl(2-phthalimidoethyl)phosphonium bromide (17) and final deprotection.These primary amines are valuable intermediates for the synthesis of impromidine analogues. Key Words: Homohistamine / Imidazole derivatives / 2-Propenamine derivatives / Impromidine
