72156-62-8Relevant articles and documents
Synthesis, characterization, and DNA binding and cleavage properties of copper(II)-tryptophanphenylalanine-1,10-phenanthroline/2,2′-bipyridine complexes
Reddy, Pulimamidi R.,Raju, Nomula,Satyanarayana, Battu
, p. 131 - 144 (2011)
The mononuclear dipeptide-based CuII complexes [Cu II(trp-phe)(phen)(H2O)] ClO4 (1) and [CuII(trp-phe)(bpy)(H2O)] ClO4 (2) (trp-phe=tryptophanphenylalanine, phen=1,10-phenanthrol
Photochemical Chemoselective Alkylation of Tryptophan-Containing Peptides
Laroche, Benjamin,Tang, Xinjun,Archer, Gaétan,Di Sanza, Riccardo,Melchiorre, Paolo
supporting information, p. 285 - 289 (2021/01/26)
We report a photochemical method for the chemoselective radical functionalization of tryptophan (Trp)-containing peptides. The method exploits the photoactivity of an electron donor-acceptor complex generated between the tryptophan unit and pyridinium sal
Late-stage construction of stapled peptides through Fujiwara-Moritani reaction between tryptophan and olefins
Liu, Jiang,Lu, Qi,Wang, Peng,Zeng, Wei,Zhu, Qing
supporting information, p. 11661 - 11664 (2021/11/12)
Herein, the first example of a palladium-catalyzed Fujiwara-Moritani reaction for olefination of tryptophan (Trp) residues, free from directing groups, was presented. The developed reaction proceeds efficiently for peptide modification, ligation and pepti
Copper-Promoted N-Arylation of the Indole Side Chain of Tryptophan Using Triarylbismuthines
Le Roch, Adrien,Chan, Hwai-Chien,Gagnon, Alexandre
supporting information, p. 5815 - 5819 (2020/07/25)
A simple protocol for the regioselective N-arylation of the indole side chain of tryptophan using triarylbismuth reagents as the arylating agent is reported. The reaction is catalyzed by copper(II) acetate, and operates in the presence of triethylamine or
Solid-State Radical C?H Trifluoromethylation Reactions Using Ball Milling and Piezoelectric Materials
Ito, Hajime,Kubota, Koji,Lee, Joo Won,Pang, Yadong
supporting information, p. 22570 - 22576 (2020/10/21)
The application of piezoelectricity for the generation of trifluoromethyl (CF3) radicals is reported together with the development of a method for the mechanochemical C?H trifluoromethylation of aromatic compounds. As compared to conventional solution-based approaches, this mechanoredox C?H trifluoromethylation enables cleaner and more sustainable access to a wide range of trifluoromethylated N-heterocycles and peptides, which are important structural motifs in modern drug discovery. This study thus represents an important milestone for future applications of mechanoredox systems to medicinal and pharmaceutical science.
CONTINUOUS, SOLVENT-FREE AND NON-ENZYMATIC PEPTIDE SYNTHESIS BY REACTIVE EXTRUSION
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Page/Page column 36; 37, (2019/09/04)
The present disclosure relates to A a continuous, solvent-free and non-enzymatic method for synthesizing a compound of formula (I): Ra-POLYPEP-Rc (I) wherein: POLYPEP is a poly-amino acid compound, Ra and Rc are as specified in the disclosure, which method comprises the steps of: a) feeding an extrusion reactor with (1) a compound of formula (II) Ra-PEPNt-Rg (II) wherein; PEPNt is a mono- or a poly-aminoacid compound, Ra and Rg are as specified in the disclosure, and (2) a compound of formula (III) H-PEPCt-Rc (III) wherein: PEPCt is a mono- or a poly-amino acid compound, and Rc is as defined in the disclosure in the absence of any solvent, so that the compound of formula (II) and the compound of formula (III) react together for generating a compound of formula (I), and b) collecting the compound of formula (I) from the extrusion reactor.
MITHRAMYCIN DERIVATIVES HAVING INCREASED SELECTIVITY AND ANTI-CANCER ACTIVITY
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Paragraph 0095; 0122, (2019/04/05)
Mithramycin side chain carboxylic acid (MTM-SA) derivative are provided, which include a substituted amino acid derivative, a substituted amino acid dipeptide derivative, or an unsubstituted dipeptide derivative. The MTM-SA derivatives are useful for treatment of cancer or neuro-diseases associated with an aberrant erythroblast transformation-specific transcription factor. Unique MTM-SA derivatives have increased selectively toward ETS transcription factor.
Development of Mithramycin Analogues with Increased Selectivity toward ETS Transcription Factor Expressing Cancers
Mitra, Prithiba,Eckenrode, Joseph M.,Mandal, Abhisek,Jha, Amit K.,Salem, Shaimaa M.,Leggas, Markos,Rohr, Jürgen
, p. 8001 - 8016 (2018/09/06)
Mithramycin A (1) was identified as the top potential inhibitor of the aberrant ETS transcription factor EWS-FLI1, which causes Ewing sarcoma. Unfortunately, 1 has a narrow therapeutic window, compelling us to seek less toxic and more selective analogues. Here, we used MTMSA (2) to generate analogues via peptide coupling and fragment-based drug development strategies. Cytotoxicity assays in ETS and non-ETS dependent cell lines identified two dipeptide analogues, 60 and 61, with 19.1- and 15.6-fold selectivity, respectively, compared to 1.5-fold for 1. Importantly, the cytotoxicity of 60 and 61 is 100 nM in ETS cells. Molecular assays demonstrated the inhibitory capacity of these analogues against EWS-FLI1 mediated transcription in Ewing sarcoma. Structural analysis shows that positioning the tryptophan residue in a distal position improves selectivity, presumably via interaction with the ETS transcription factor. Thus, these analogues may present new ways to target transcription factors for clinical use.
Halogen-Bond-Promoted Photoactivation of Perfluoroalkyl Iodides: A Photochemical Protocol for Perfluoroalkylation Reactions
Wang, Yaxin,Wang, Junhua,Li, Guo-Xing,He, Gang,Chen, Gong
supporting information, p. 1442 - 1445 (2017/03/23)
A new protocol for photochemical perfluoroalkylation reactions using perfluoroalkyl iodide, amine additive, and THF solvent is reported. This protocol does not require a photoredox catalyst and proceeds at ambient temperature with irradiation from a compact fluorescent lamp, low-intensity UV lamp, or sunlight. This protocol can be applied to the synthesis of perfluoroalkyl-substituted phenanthridines as well as effect the iodo-perfluoroalkylation of alkenes/alkynes and the C-H perfluoroalkylation of electron-rich arenes and heteroarenes. This C-H perfluoroalkylation reaction offers a unique method for site-selective labeling of oligopeptides at the tryptophan residue.
INHIBITORS OF GROWTH FACTOR ACTIVATION ENZYMES
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Paragraph 0137, (2016/09/26)
The present invention generally relates to compounds that are useful for inhibiting one or more of hepatocyte growth factor activator, matriptase, hepsin, Factor Xa, or thrombin. The present invention also relates to various methods of using the inhibitor compounds including treating a malignancy, a pre-malignant condition, or cancer by administering an effective amount of the inhibitor to a subject in need thereof.