19097-44-0Relevant articles and documents
Tetrahydrofuran ring opening with acid chlorides catalyzed by samarium triiodides
Yu,Zhang,Ling
, p. 1973 - 1977 (1993)
SmI3 acts as Lewis-acid catalysts in tetrahydrofuran ring opening reactions with acid chlorides under mild conditions.
Discovery of Macrocyclic Pyrimidines as MerTK-Specific Inhibitors
McIver, Andrew L.,Zhang, Weihe,Liu, Qingyang,Jiang, Xinpeng,Stashko, Michael A.,Nichols, James,Miley, Michael J.,Norris-Drouin, Jacqueline,Machius, Mischa,DeRyckere, Deborah,Wood, Edgar,Graham, Douglas K.,Earp, H. Shelton,Kireev, Dmitri,Frye, Stephen V.,Wang, Xiaodong
supporting information, p. 207 - 213 (2017/02/15)
Macrocycles have attracted significant attention in drug discovery recently. In fact, a few de novo designed macrocyclic kinase inhibitors are currently in clinical trials with good potency and selectivity for their intended target. In this study, we successfully engaged a structure-based drug design approach to discover macrocyclic pyrimidines as potent Mer tyrosine kinase (MerTK)-specific inhibitors. An enzyme-linked immunosorbent assay (ELISA) in 384-well format was employed to evaluate the inhibitory activity of macrocycles in a cell-based assay assessing tyrosine phosphorylation of MerTK. Through structure–activity relationship (SAR) studies, analogue 11 [UNC2541; (S)-7-amino-N-(4-fluorobenzyl)-8-oxo-2,9,16-triaza-1(2,4)-pyrimidinacyclohexadecaphane-1-carboxamide] was identified as a potent and MerTK-specific inhibitor that exhibits sub-micromolar inhibitory activity in the cell-based ELISA. In addition, an X-ray structure of MerTK protein in complex with 11 was resolved to show that these macrocycles bind in the MerTK ATP pocket.
Novel total synthesis method of 13a-hydroxy tylophorine
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Paragraph 0021, (2018/04/01)
The invention relates to a total synthesis route and method of 13a-hydroxy tylophorine. The method comprises the following steps: synthesizing siloxane nitrile alcohol containing nitrogen from tetrahydrofuran and benzoyl chloride which are simple and easi
The backbone N-(4-azidobutyl) linker for the preparation of peptide chimera
Fernandez-Llamazares, Ana I.,Garcia, Jesus,Adan, Jaume,Meunier, David,Mitjans, Francesc,Spengler, Jan,Albericio, Fernando
supporting information, p. 4572 - 4575 (2013/09/24)
A robust synthetic strategy for the introduction of the N-(4-azidobutyl) linker into peptides using standard SPPS techniques is described. Based on the example of Cilengitide it is shown that the N-(4-azidobutyl) group exerts similar conformational restra
A formal synthesis of swainsonine by gold-catalyzed allene cyclization
Bates, Roderick W.,Dewey, Mark R.
supporting information; experimental part, p. 3706 - 3708 (2011/02/25)
Image Presented A formal synthesis of swainsonine has been achieved using a highly efficient and diastereoselective gold(III)-catalyzed allene cyclization.
Nucleotide and oligonucleotide prodrugs
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Page/Page column 19, (2008/06/13)
The present invention discloses compounds of formula (I): which exhibit antiviral properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of anti-HBV
Anti-HBV nucleotide prodrug analogs: Synthesis, bioreversibility, and cytotoxicity studies
Padmanabhan, Seetharamaiyer,Coughlin, John E.,Zhang, Guangrong,Kirk, Cassandra J.,Iyer, Radhakrishnan P.
, p. 1491 - 1494 (2007/10/03)
Several pronucleotide analogs of the model anti-HBV dinucleotide 3′-dA-U2′OMe have been synthesized and evaluated for stability, bioreversibility and cytotoxicity. These studies have helped identify potential candidates for further evaluation.
Structure and reactivity of bis(iodozincio)methane solution
Matsubara, Seijiro,Yoshino, Hideaki,Yamamoto, Yuhei,Oshima, Koichiro,Matsuoka, Hideki,Matsumoto, Kozo,Ishikawa, Kazuhiko,Matsubara, Eiichiro
, p. 5546 - 5551 (2007/10/03)
Bis(iodozincio)methane, which has been shown to be an efficient reagent for organic synthesis, is obtained as THF solution. The structural information about the reagent as THF solution was corrected by small angle neutron scattering and by anomalous X-ray scattering. Those scattering experiments implied that the prepared bis(iodozincio)methane exists without forming any oligomer or aggregate. A coordination of tetrahydrothiophene to bis(iodozincio)methane enhances the nucleophilicity of the reagent and stabilizes its monomeric structure in the solution.
Process for the preparation of tetrazol-derived compounds as growth hormone secretagogues
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Page/Page column 7-8, (2010/02/11)
A process for the preparation of tetrazole-derived compounds useful as growth hormone secretagogues is described.
Highly regioselective cleavages and iodinations of cyclic ethers utilizing SmI2
Kwon, Doo Won,Kim, Yong Hae,Lee, Kieseung
, p. 9488 - 9491 (2007/10/03)
Various functionalized cyclic ethers such as oxiranes, oxetanes, and tetrahydrofurans have been prepared, and the regiochemistry of their ring opening with samarium diiodide and acyl chloride or anhydride has been investigated. Alkyl-substituted oxetane 5 and tetrahydrofurans 1 and 2 show almost no regioselectivity. However, high regioselectivities from the branched cyclic ethers (3, 8, 9, and 10) containing ethereal or hydroxyl moieties have been observed. This is probably the result of the bidentate chelated species between samarium and oxygen.