Synthesis and analysis of polyethylene glycol linked P-glycoprotein-specific homodimers based on (−)-stipiamide
摘要:
A series of five homodimeric polyethylene glycol (PEG) linked homodimers based on the multidrug resistance reversal agent (-)-stipiamide were made and tested fur their ability to interact with P-glycoprotein, the protein responsible for multidrug resistance, using ATPase and photoaffinity displacement assays. Key reactions include a new alkoxide-mesylate displacement for the assembly of the PEG linkers and a double Sunogashira coupling reaction. (C) 2001 Elsevier Science Ltd. All rights reserved.
[EN] CONJUGATES COMPRISING PEPTIDE GROUPS AND METHODS RELATED THERETO<br/>[FR] CONJUGUÉS COMPRENANT DES GROUPES PEPTIDIQUES ET PROCÉDÉS ASSOCIÉS À CEUX-CI
申请人:LEGOCHEM BIOSCIENCES INC
公开号:WO2017089894A1
公开(公告)日:2017-06-01
In some aspects, the invention relates to an antibody-drug conjugate, comprising an antibody; a linker; and at least two active agents. In preferred embodiments, the linker comprises a peptide sequence of a plurality of amino acids, and at least two of the active agents are covalently coupled to side chains of the amino acids. The antibody-drug conjugate may comprise a self-immolative group, preferably two-self-immolative groups. The linker may comprise an O-substituted oxime, e.g., wherein the oxygen atom of the oxime is substituted with a group that covalently links the oxime to the active agent; and the carbon atom of the oxime is substituted with a group that covalently links the oxime to the antibody.
Ultra-Fast Dendritic Growth Based on the Grafting of Fullerene Hexa-Adduct Macromonomers onto a Fullerene Core
作者:David Sigwalt、Rubén Caballero、Michel Holler、Jean-Marc Strub、Alain Van Dorsselaer、Jean-François Nierengarten
DOI:10.1002/ejoc.201600439
日期:2016.6
A fullerenehexa-adduct building block bearing an azide functionality was prepared in six steps, and graftedonto a central fullerenecore under copper-catalyzed azide–alkyne cycloaddition conditions. The resulting tridecafullerene derivative is a first generation dendrimer with 132 peripheral ethyl ester groups. This compound was characterized by different spectroscopic techniques (1H and 13C NMR
Polyalkylene glycol derivatives of inhibitors of epidermal growth factor receptor tyrosine kinase
申请人:Mishani Eyal
公开号:US20080056990A1
公开(公告)日:2008-03-06
Novel epidermal growth factor receptor tyrosine kinase (EGFR-TK) inhibitors, pharmaceutical compositions including same and their use in the treatment of EGFR-TK related diseases or disorders are disclosed. Novel radiolabeled EGFR-TK inhibitors as their use as biomarkers for medicinal radioimaging such as Positron Emission Tomography (PET) and Single Photon Emission Computed Tomography (SPECT) and as radiopharmaceuticals for radiotherapy are further disclosed. The disclosed EGFR-TK inhibitors comprise a polyalkylene glycol moiety and/or a hydroxy-containing moiety and are characterized by improved solubility, biostability and bioavailability. Processes of preparing the disclosed EGFR-TK inhibitors and of radiolabeling same, via, for example, one-step radiosyntheses, are also disclosed.
Synthetic Approaches to a Variety of Covalently Linked Porphyrin−Fullerene Hybrids
作者:Shaun MacMahon、Robert Fong、Phil S. Baran、Igor Safonov、Stephen R. Wilson、David I. Schuster
DOI:10.1021/jo010317x
日期:2001.8.1
There is substantial interest in dyads in which C-60 is covalently linked to electron donors, such as porphyrins, which absorb light strongly in the visible region. We present here the details of the syntheses of such compounds, which can be broadly organized into categories depending upon the nature of the linker joining the two chromophores. The structural aspects of intramolecular electronic interaction that we have sought to explore have dictated the synthetic strategies employed to generate these classes of molecules. Flexible glycol linkers were used to allow close approach between the fullerene and porphyrin, facilitating through-space interactions. These linkers also allowed studies of the effects of metal cation complexation. Naphthalene and alkyne linkers were used to examine the possible effects a conjugated or aromatic linker might have on photophysical properties. Finally, steroids were used as linkers in dyads expected to possess a large distance between the two chromophores, in which only through-bond interactions between the fullerene and porphyrin should be possible.
[EN] CONJUGATES COMPRISING SELF-IMMOLATIVE GROUPS AND METHODS RELATED THERETO<br/>[FR] CONJUGUÉS COMPRENANT DES GROUPES AUTO-IMMOLABLES ET PROCÉDÉS ASSOCIÉS