Antitumour polycyclic acridines. Part 9.1 Synthesis of 7H-pyrido[4,3,2-kl]acridines with basic side chains
作者:Michael J. Ellis、Malcolm F. G. Stevens
DOI:10.1039/b106324n
日期:2001.11.29
[3 + 2] Cycloaddition of 3-(dialkylamino)-1-triphenylphosphoranylidenepropan-2-ones and 9-azidoacridine affords 9-[5-(dialkylaminomethyl)-1H-1,2,3-triazol-1-yl]acridines. Graebe–Ullmann thermolysis of the triazoles has been guided by differential scanning calorimetry to predict the optimum temperature for nitrogen extrusion. Boiling diphenyl ether (bp 259 °C) is a suitable solvent to convert the triazolylacridines
Nuclear RNA export into the cytoplasm is one of the key steps in protein expression to realize biological functions. Despite the broad availability of nucleic acid dyes, tracking and quantifying the highly dynamic process of RNA export in livecells is challenging. When dye-labeled RNA enters the cytoplasm, the dye molecules are released upon degradation of the RNA, allowing them to re-enter the cell
Regioselective synthesis of [1,2,3]-triazoles catalyzed by Cu(I) generated in situ from Cu(0) nanosize activated powder and amine hydrochloride salts
作者:Hernán A. Orgueira、Demosthenes Fokas、Yuko Isome、Philip C.-M. Chan、Carmen M. Baldino
DOI:10.1016/j.tetlet.2005.02.127
日期:2005.4
A straightforward and efficient method for the regioselectivesynthesis of functionalized 1,4-disubstituted [1,2,3]-triazoles, from terminal alkynes and azides, has been established utilizing Cu(0) as the source of the catalytic species. The presumed catalytic Cu(I) species is generated by the combination of 10 mol % copper nanosize activated powder and 1 equiv of an amine hydrochloride salt. The addition
Labelled nucleic acid probes and adducts for their preparation
申请人:MOLECULAR DIAGNOSTICS, INC.
公开号:EP0131830A1
公开(公告)日:1985-01-23
A labeled nucleic acid probe comprising (a) a nucleic acid component, (b) a nucleic acid-binding ligand photochemically linked to the nucleic acid component, and (c) a label chemically linkedto the nucleic acid-binding ligand. The label can be a specifically bindable ligand such as a hapten or biotin, an enzyme such as a ß-galactosidase or horse radish peroxidase, a fluorescent radical, a phycobiliprotein, a luminescent radical, or a radioisotope. The probe can be used in assays of nucleic acids, taking advantage of the ability of the nucleic acid component to hybridize.
Hybridization assay with immobilization of hybrids by antihybrid binding
申请人:MILES INC.
公开号:EP0146039A2
公开(公告)日:1985-06-26
A nucleic acid hybridization assay wherein the hybrid formed between the polynucleotide sequence to be detected and the probe is immobilized by binding of an immobilized or immobilizable form of an antibody reagent selective for binding such hybrid. Preferred antibody reagents are selective for DNA·RNA or RNA·RNA hybrids or for intercalated duplexes. The immobilized hybrid is detected preferably by use of a labeled form of a second such antibody reagent or a labeled form of the probe. The method dispenses with the need to immobilize either the probe or sample nucleic acids and permits hybridization to proceed between the sequence to be detected and the probe in solution, resulting in rapid rates of hybridization.