COMPOSITIONS AND METHODS FOR IMAGING TISSUES, ORGANS AND TUMORS
申请人:Mahmood Ashfaq
公开号:US20120269724A1
公开(公告)日:2012-10-25
The present invention relates to compounds and related technetium and rhenium complexes thereof which are suitable for imaging or therapeutic treatment of tissues, organs, or tumors. In another embodiment, the invention relates to methods of imaging tissues, organs, or tumors using radiolabeled metal complexes, particularly tissues, organs, or tumors which express certain receptors to which the compounds or complexes of the invention have an affinity. The present invention also relates to methods of treating cancer, particularly those cancer lines which express certain receptors to which the compounds or complexes of the invention have an affinity. In yet another embodiment, the present invention provides methods of imaging and/or inhibiting receptors or neuroreceptors using compounds or complexes of the invention which have an affinity for the receptor or neuroreceptor to be imaged and/or inhibited.
Cysteine Isocyanide in Multicomponent Reaction: Synthesis of Peptido-Mimetic 1,3-Azoles
作者:Thimmalapura M. Vishwanatha、Katarzyna Kurpiewska、Justyna Kalinowska-Tłuścik、Alexander Dömling
DOI:10.1021/acs.joc.7b01615
日期:2017.9.15
An alternative approach toward the simple and robust synthesis of highly substituted peptidic thiazole derivatives using Ugi-multicomponent reaction (U-MCR) is described. Thus, we introduced the enantiopure (R)-2-methyl-2-isocyano-3-(tritylthio)propanoate as a novel class of isocyanide in MCR. This bifunctional isocyanide was found to undergo mild cyclodehydration to afford thiazole containing peptidomimetics
One Step Synthesis of Fmoc-Aminoacyl-<i>N</i>-alkylcysteine via the Ugi Four-Component Condensation Reaction
作者:Yuya Asahina、Hironobu Hojo
DOI:10.1021/acs.joc.9b02433
日期:2020.2.7
teine dipeptide by an Ugi four-component condensation reaction is described. Through a reaction with a commercially available Fmoc-amino acid, an amine, an isocyanide, and a mercaptoacetaldehyde derivative, one step synthesis of dipeptidescontaining 20 kinds of natural aminoacid residues was achieved, which avoided the problematic N-alkylation of S-tritylcysteine and its coupling reaction. The dipeptide
Features of Auxiliaries That Enable Native Chemical Ligation beyond Glycine and Cleavage via Radical Fragmentation
作者:Simon F. Loibl、Andre Dallmann、Kathleen Hennig、Carmen Juds、Oliver Seitz
DOI:10.1002/chem.201705927
日期:2018.3.7
Nativechemicalligation (NCL) is an invaluable tool in the total chemical synthesis of proteins. Ligationauxiliaries overcome the requirement for cysteine. However, the reported auxiliaries remained limited to glycine‐containing ligation sites and the acidic conditions applied for cleavage of the typically applied N‐benzyl‐type linkages promote side reactions. With the aim to improve upon both ligation
The present invention pertains to novel products suitable for use as gene delivery systems in which nucleic acid is linked to a ligand in order to facilitate delivery of the nucleic acid to a target cell or sub-cellular compartment via uptake of the ligand. More particularly, the present invention pertains to vectors comprising: (a) a double stranded DNA (dsDNA) having at least one target sequence; and, (b) a chimeric molecule comprising: (i) a sequence specific polyamide (SSP) moiety bound non-covalently to said target sequence; and, (ii) a ligand moiety linked covalently to said sequence specific polyamide. The present invention also pertains to compositions comprising such chimeric molecules and vectors; methods for making such chimeric molecules and vectors; and methods of using such chimeric molecules and vectors, e.g., to deliver nucleic acid vectors to cells or sub-cellular compartments.