98541-64-1Relevant academic research and scientific papers
Stereoselective synthesis of Boc-protected L-seleno- and tellurolanthionine, L-seleno- and tellurocystine and derivatives
Schneider, Alex,Rodrigues, Oscar E. D.,Paix?o, Márcio W.,Appelt, Helmoz R.,Braga, Antonio L.,Wessjohann, Ludger A.
, p. 1019 - 1021 (2006)
Optically active seleno- and telluro amino acids can be synthesized from serine via its β-lactone with selenides and tellurides under overall retention of the serine stereochemistry. Boc-protected l-selenolanthionine, l-tellurolanthionine, l-selenocystine
Parallel solid synthesis of inhibitors of the essential cell division FtsZ enzyme as a new potential class of antibacterials
Paradis-Bleau, Catherine,Beaumont, Melanie,Sanschagrin, Francois,Voyer, Normand,Levesque, Roger C.
, p. 1330 - 1340 (2007)
As a model system for designing new inhibitors of bacterial cell division, we studied the essential and highly conserved FtsZ GTPase from Pseudomonas aeruginosa. A collection of GTP analogues were prepared using the solid-phase parallel synthesis approach. The synthesized GTP analogues inhibited the GTPase activity of FtsZ with IC50 values between 450 μM and 2.6 mM, and 5 compounds inhibited Staphylococcus aureus growth in a biological assay. The FtsZ spectrophotometric assay developed for screening of synthesized compounds is the first step in identification of antibacterials targeting the bacterial cell division essential proteins.
Gatorbulin-1, a distinct cyclodepsipeptide chemotype, targets a seventh tubulin pharmacological site
Matthew, Susan,Chen, Qi-Yin,Ratnayake, Ranjala,Fermaintt, Charles S.,Lucena-Agell, Daniel,Bonato, Francesca,Prota, Andrea E.,Lim, Seok Ting,Wang, Xiaomeng,Díaz, J. Fernando,Risinger, April L.,Paul, Valerie J.,Oliva, Maria ángela,Luesch, Hendrik
, (2021/03/03)
Tubulin-targeted chemotherapy has proven to be a successful and wide spectrum strategy against solid and liquid malignancies. Therefore, new ways to modulate this essential protein could lead to new antitumoral pharmacological approaches. Currently known tubulin agents bind to six distinct sites at α/β-tubulin either promoting microtubule stabilization or depolymerization. We have discovered a seventh binding site at the tubulin intradimer interface where a novel microtubule-destabilizing cyclodepsipeptide, termed gatorbulin-1 (GB1), binds. GB1 has a unique chemotype produced by a marine cyanobacterium. We have elucidated this dual, chemical and mechanistic, novelty through multidimensional characterization, starting with bioactivity-guided natural product isolation and multinuclei NMR-based structure determination, revealing the modified pentapeptide with a functionally critical hydroxamate group; and validation by total synthesis. We have investigated the pharmacology using isogenic cancer cell screening, cellular profiling, and complementary phenotypic assays, and unveiled the underlying molecular mechanism by in vitro biochemical studies and high-resolution structural determination of the α/β-tubulin?GB1 complex.
Exploring the dNTP -binding site of HIV-1 reverse transcriptase for inhibitor design
Gu, Weijie,Martinez, Sergio,Singh, Abhimanyu K.,Nguyen, Hoai,Rozenski, Jef,Schols, Dominique,Herdewijn, Piet,Das, Kalyan,De Jonghe, Steven
, (2021/08/24)
HIV-1 reverse transcriptase (RT) plays a central role in the viral life cycle, and roughly half of the FDA-approved anti-HIV drugs are targeting RT. Nucleoside analogs (NRTIs) require cellular phosphorylation for binding to RT, and to bypass this rate-limiting path, we designed a new series of acyclic nucleoside phosphonate analogs as nucleoside triphosphate mimics, aiming at the chelation of the catalytic Mg2+ ions via a phosphonate and/or a carboxylic acid group. Novel synthetic procedures were developed to access these nucleoside phosphonate analogs. X-ray structures in complex with HIV-1 RT/dsDNA demonstrated that their binding modes are distinct from that of our previously reported compound series. The impact of chain length, chirality and linker atom have been discussed. The detailed structural understanding of these new compounds provides opportunities for designing new class of HIV-1 RT inhibitors.
PNA Hybrid Sequences as Recognition Units in SNARE-Protein-Mimicking Peptides
Hubrich, Barbara E.,Kumar, Pawan,Neitz, Hermann,Grunwald, Matthias,Grothe, Tobias,Walla, Peter Jomo,Jahn, Reinhard,Diederichsen, Ulf
supporting information, p. 14932 - 14936 (2018/10/15)
Membrane fusion is an essential process in nature and is often accomplished by the specific interaction of SNARE proteins. SNARE model systems, in which SNARE domains are replaced by small artificial units, represent valuable tools to study membrane fusio
Synthesis and characterization of selenium(I/II) and tellurium(IV) derivatives of amino acids
Singh, Puspendra,Singh, Harkesh B.,Butcher, Ray J.
, p. 1 - 9 (2018/09/21)
The direct reaction between Te metal and methyl 2-(2-bromoacetamido)propanoate (27) at room temperature, yields the first example of organotellurium(IV) derivative (MeOC(O)CH(Me)NHCOCH2)2TeBr2 (31). Similarly, reaction of Te with methyl 2-(2-bromoacetamido)acetate (26) and methyl 2-(2-bromoacetamido)-3-phenylpropanoate (28) in presence of NaI in acetone gives MeOC(O)CH2NHCOCH2I (29), MeOC(O)CH(R)NHCOCH2)2TeI2 (R = H (30) and CH2Ph (32). Treatment of 26/27/28 with Li2Te2/Li2Se2 readily provides the [MeOC(O)CH(CH3)NHCOCH2]2Te2, (33); [MeOC(O)CH2NHCOCH2]2Se2, (34); [MeOC(O)CH(CH2Ph)NHCOCH2]2Se2, (35) and [Figure presented] (36). Similarly the reaction of (2,6-dimethyl-4-tert-butylC6H2)SeNa with 28 readily provide the [MeOC(O)CH(CH2Ph)NHCOCH2]SeC6H2-2,6-dimethyl-4-tert-butyl), (37) in good yield. Molecule [MeOC(O)CHNH(Boc)CH2]2Se2, (38) and [NaOC(O)CHNH(Boc)CH2Te(2,4,6-Me3C6H2] (39) were prepared by the treatment of Li2Se2/2,4,6-Me3C6H2TeNa with methyl 3-bromo-2-((tert-butoxycarbonyl)amino)propanoate and N-(t-Boc)-L-serine β-lactone respectively. These compounds are purified by chromatography and characterized by a number of analytical techniques such as (1H, 13C, 77Se and 125Te NMR) spectroscopy, mass spectrometry and elemental analysis. The single crystal X-ray studies of 29, 30, 31, 36 and 38 revealed the presence of characteristic O?Se/Te, secondary bonding interactions. A detailed analysis of the crystal structures of the compound reveals interesting supramolecular assembly.
ANTIBACTERIAL COMPOUNDS
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Page/Page column 28, (2018/10/19)
Novel compounds having antimicrobial activitiy, in particular against Pseudomonas aeruginosa, Burkholderia cepaciaand/or Clostridium difficile, and a pharmaceutical composition containing the novel compound.
ISOBARIC MASS LABELS
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Paragraph 0023; 0174, (2019/01/04)
The present invention relates to a set of two or more mass labels, wherein each mass label comprises the formula: [in-line-formulae]X-L-M-Re[/in-line-formulae] wherein X is a reporter moiety having an exact mass, L is a bond cleavable by collision in a ma
Purine alanine derivative used for tumor therapy, and preparation method and application of derivative
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Paragraph 0019; 0023; 0026, (2017/06/02)
The invention discloses a purine alanine derivative used for tumor therapy, and a preparation method and an application of the derivative, and belongs to the technical field of synthesis of antitumor medicines. The purine alanine derivative used for tumor
Synthesis and pharmacological characterization of the selective GluK1 radioligand (: S)-2-amino-3-(6-[3H]-2,4-dioxo-3,4-dihydrothieno[3,2- d] pyrimidin-1(2 H)-yl)propanoic acid ([3H]-NF608)
Alcaide, Anna,Marconi, Laura,Marek, Ales,Haym, Isabell,Nielsen, Birgitte,M?llerud, Stine,Jensen, Mikael,Conti, Paola,Pickering, Darryl S.,Bunch, Lennart
, p. 2136 - 2144 (2016/11/17)
The kainic acid receptors belong to the class of ionotropic glutamate receptors and comprise five subunits named GluK1-5. Radioligands are essential tools for use in binding assays aimed at ligand-receptor structure-activity-relationship studies. Previous work has led to the synthesis of GluK1 radioligands [3H]-SYM2081, [3H]-UBP310 and [3H]-ATPA, however all strategies were work-intensive and thus not attractive. Herein, we report the synthesis of [3H]-NF608 and subsequent pharmacological evaluation at homomeric recombinant rat GluK1 receptors. Binding affinities of a series of standard GluK1 ligands were shown to be in line with previously reported affinities obtained by use of already reported radioligands.
