87512-31-0Relevant articles and documents
Alaninyl variants of the marine natural product halocyamine A and their antibacterial properties
Fong, Hugo K.H.,Cadelis, Melissa M.,Brunel, Jean Michel,Bourguet-Kondracki, Marie-Lise,Barker, David,Copp, Brent R.
, p. 6929 - 6938 (2018)
In an effort to explore the antibacterial potential of the marine natural product halocyamine A, a series of analogues including desbromo and alanine-substituted variants were synthesised and evaluated for biological activity against a panel of Gram-positive and –negative bacteria. The analogues were synthesised by a combination of solid-phase peptide synthesis and ruthenium complex/ytterbium triflate catalysed hydroamidation chemistry. Single alanine substitutions ([Ala1]-halocyamine A and [Ala2]-halocyamine A) gave only modest increases in activity towards Gram-positive bacteria, while di-alaninyl variants exhibited more potent activity with MIC values of 12.5–50 μM towards the Gram-positive bacteria Staphylococcus aureus and Enterococcus faecalis. A lipophilic trityl-protected intermediate of [Ala2]-halocyamine was the most active against the Gram-negative bacterium Escherichia coli.
Benzoisothiazolone (BIT): A Fast, Efficient, and Recyclable Redox Reagent for Solid Phase Peptide Synthesis
Bukya, Hemalatha,Gangireddy, Pavankumar,Mainkar, Prathama S.,Nayani, Kiranmai
supporting information, p. 5358 - 5362 (2020/08/27)
Solid-phase peptide synthesis (SPPS), a preferred synthetic procedure, generates by-products and effluents in multiple equivalents for one equivalent of desired product. Presented herein is the use of a fast and efficient coupling protocol for SPPS using a benzoisothiazolone (BIT), which can be fully recycled. The BIT, as redox activator, works under very mild conditions and generates minimal amount of waste. As a case study, the BIT coupling protocol is applied to the synthesis of side chain of the recently discovered antibiotic, teixobactin.
ANTI-EGFR ANTIBODY DRUG CONJUGATES
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Paragraph 0936, (2019/06/07)
The invention relates to anti-Epidermal Growth Factor Receptor (EGFR) antibody drug conjugates (ADCs) which inhibit Bcl-xL, including compositions and methods of using said ADCs.
SPECIFICALLY ACTIVATED MICROMOLECULAR TARGET COUPLING BODY IN TUMOR MICROENVIRONMENT AND USE THEREOF
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, (2017/07/14)
Provided are an anticancer compound comprising a cleavable linker specifically activated in a tumor microenvironment, and use thereof. The anticancer compound is represented by the following formula, wherein, R1 is a normal functional group or a protection group; R2 is Ala, Thr, Val or Ile; R3 is Ala, Val or Asn; R4 is a drug group linked via a hydroxyl group or an amino group; and the general formula of the drug is R4H. The anticancer compound is only activated at a local portion of a tumor, thus avoiding the defect of immune system damage of a traditional chemotherapeutic drug, and promoting tumor immunization by removing a tumor immunosuppression cell. The anticancer compound or pharmaceutical composition thereof is jointly used with immunotherapy, thus improving the effect of treating the tumor, and effectively inhibiting tumor metastasis and osseous metastasis.
Localized Supramolecular Peptide Self-Assembly Directed by Enzyme-Induced Proton Gradients
Rodon Fores, Jennifer,Martinez Mendez, Miguel Leonardo,Mao, Xiyu,Wagner, Déborah,Schmutz, Marc,Rabineau, Morgane,Lavalle, Philippe,Schaaf, Pierre,Boulmedais, Fouzia,Jierry, Lo?c
supporting information, p. 15984 - 15988 (2017/11/22)
Electrodes are ideal substrates for surface localized self-assembly processes. Spatiotemporal control over such processes is generally directed through the release of ions generated by redox reactions occurring specifically at the electrode. The so-used gradients of ions proved their effectiveness over the last decade but are in essence limited to material-based electrodes, considerably reducing the scope of applications. Herein is described a strategy to enzymatically generate proton gradients from non-conductive surfaces. In the presence of oxygen, immobilization of glucose oxidase (GOx) on a multilayer film provides a flow of protons through enzymatic oxidation of glucose by GOx. The confined acidic environment located at the solid–liquid interface allows the self-assembly of Fmoc-AA-OH (Fmoc=fluorenylmethyloxycarbonyl and A=alanine) dipeptides into β-sheet nanofibers exclusively from and near the surface. In the absence of oxygen, a multilayer nanoreactor containing GOx and horseradish peroxidase (HRP) similarly induces Fmoc-AA-OH self-assembly.
ANTI-CD98 ANTIBODIES AND ANTIBODY DRUG CONJUGATES
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Page/Page column 296, (2018/01/15)
The invention relates to anti-CD98 antibodies and antibody drug conjugates (ADCs), including compositions and methods of using said antibodies and ADCs.
Maytansinoid derivatives with peptide linker and conjugates thereof
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Page/Page column 111; 112, (2016/04/20)
The invention relates to novel cell-binding agent-cytotoxic agent conjugate having a peptide linkers and more specifically to conjugates of formula (I). The invention also provides novel cytotoxic agents of formula (II), linker compounds represented by fo
ANTIBODY DRUG CONJUGATES WITH CELL PERMEABLE BCL-XL INHIBITORS
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Paragraph 000457, (2016/07/05)
Small molecule Bcl-xL inhibitors and Antibody Drug Conjugates (ADCs) comprising small molecule Bcl-xL inhibitors are disclosed herein. The Bcl-xL inhibitors and ADCs of the disclosure are useful for, among other things, inhibiting anti-apoptotic Bcl xL proteins as a therapeutic approach towards the treatment of diseases that involve a dysregulated apoptosis pathway.
PEPTIDE-DRUG CONJUGATES
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, (2016/01/22)
Peptide-drug conjugates comprising p-aminobenzyl carbamoyl or p-aminobenzolyl carbonate self-immolating linkers are disclosed. The peptide-drug conjugates comprise a peptide moiety that can be cleaved by cellular proteases, bound to the self-immolating li
Two-fold odd-even effect in self-assembled nanowires from oligopeptide-polymer-substituted perylene bisimides
Marty, Roman,Nigon, Robin,Leite, Deborah,Frauenrath, Holger
supporting information, p. 3919 - 3927 (2014/04/03)
Organic nanowires are important building blocks for nanoscopic organic electronic devices. In order to ensure efficient charge transport through such nanowires, it is important to understand in detail the molecular parameters that guide self-assembly of π-conjugated molecules into one-dimensional stacks with optimal constructive π-π overlap. Here, we investigated the subtle relationship between molecular structure and supramolecular arrangement of the chromophores in self-assembled nanowires prepared from perylene bisimides with oligopeptide-polymer side chains. We observed a two-fold odd-even effect in circular dichroism spectra of these derivatives, depending on both the number of l-alanine units in the oligopeptide segments and length of the alkylene spacer between chromophore and oligopeptide substituents. Our results indicate that there is a complex interplay between the translation of molecular chirality into supramolecular helicity and the molecules' inherent propensity for well-defined one-dimensional aggregation into β-sheet-like superstructures in the presence of a central chromophore. Strong excitonic coupling as expressed by the appearance of hypsochromically and bathochromically shifted UV-vis absorptions and strong CD signals was systematically observed for molecules with an odd number of l-alanines in the side chains. The latter derivatives gave rise to nanowires with a significantly higher electron mobility. Our results, hence, provide an important design rule for self-assembled organic nanowires.