Mild basic ionic liquid catalyzed four component synthesis of functionalized benzo[a]pyrano[2,3-c]phenazine derivatives
摘要:
An efficient, mild, and one-pot quantitative procedure for the preparation of functionalized benzo[a]pyrano[2,3-c] phenazine derivatives from four component reaction of 2-hydroxynaphthalene-1,4-dione, o-phenylenediamine, aldehydes, and malononitrile in the presence of basic ionic liquids such as 1-butyl-3-methylimidazolium hydroxide, 3-hydroxypropanaminium acetate, pyrrolidinium formate, pyrrolidinium acetate, 1,8-diazabicyclo[5.4.0]-undec-7-en-8-ium acetate, and piperidinium formate as the catalysts has been developed. The ionic liquid was stable during the reaction process and could also be reused several times with consistent activity. This procedure may be a practical alternative to the existing one reported procedure to meet the need of academe as well as industries. (C) 2012 Elsevier B.V. All rights reserved.
Solid-Phase Parallel Synthesis of a Tetrahydroindazolone Library Containing Three Unique Core Skeletons
作者:Jonghoon Kim、Heebum Song、Seung Bum Park
DOI:10.1002/asia.201100145
日期:2011.8.1
the regioselective synthesis of a 1‐(hetero)aryl‐3‐substituted tetrahydroindazolone library. The condensation of in situ generated arylhydrazine on solid supports with 2‐acylcyclohexane‐1,3‐diones ensured the efficiency of solid‐phase parallel synthesis. In addition, we introduced three unique core skeletons containing nitrophenyl, anilyl, and pyridyl groups to maximize the moleculardiversity through
[EN] INDUSTRIAL PROCESS FOR THE SYNTHESIS OF ISOBUTYL METHYL 1,4-DIHYDRO-2,6-DIMETHYL-4-(2-NITROPHENYL)-3,5-PYRIDINE DICARBOXYLATE (NISOLDIPINE)<br/>[FR] PROCEDE INDUSTRIEL DE SYNTHESE D'ISOBUTYL METHYL 1,4-DIHYDRO-2,6-DIMETHYL-4-(2-NITROPHENYL)-3,5-PYRIDINE DICARBOXYLATE (NISOLDIPINE)
申请人:ERREGIERRE SPA
公开号:WO2004002958A1
公开(公告)日:2004-01-08
Synthetic process of isobutyl methyl 1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)3,5-pyridine dicarboxylate (Nisoldipine) comprising on the reaction of isobutyl 2-(2-nitrobenzylidene)acetoacetate with methyl 3-aminocrotonate in an apolar solvent.
A composition including a metalloinsertor conjugate that specifically targets mismatch repair (MMR)-deficient cells includes a complex represented by Formula I.
M
m+
(L
1
)(L
2
)(L
3
)(L
4
)(L
5
) Formula I
Selective cytotoxicity may be induced in MMR-deficient cells upon uptake of the metalloinsertor conjugate. Metalloinsertor complexes conjugated with platinum (Pt) may allow for more specific targeting of platinum anticancer agents.
METHOD OF PURIFYING NUCLEIC ACID USING NONWOVEN FABRIC AND DETECTION METHOD
申请人:Asahi Kasei Kabushiki Kaisha
公开号:EP1416047A1
公开(公告)日:2004-05-06
A method of separating and purifying nucleic acids from samples containing cells, such as blood and culture solutions. According to the method of the invention, a cell extract obtained by cell disruption is adsorbed by a filter made of a nonwoven fabric and the nucleic acid is eluted after washing the filter. Alkaline conditions of pH 12 or higher may be employed for elution of the nucleic acid, or the filter-adsorbed nucleic acid may be eluted by treatment with active oxygen or by using a surfactant. Nucleic acids separated and purified by the method of the invention can be used in nucleic acid amplification and nucleic acid sequence analysis techniques.
Base specific cleavage of methylation-specific amplification products in combination with mass analysis
申请人:Sequenom, Inc.
公开号:EP2395098A1
公开(公告)日:2011-12-14
The present invention relates to a method of distinguishing between a false positive methylation specific amplification and a true methylation specific amplification, comprising the steps of: (a) treating a target nucleic acid molecule with a reagent that modifies an unmethylated selected nucleotide to produce a different nucleotide; (b) contacting the treated target nucleic acid molecule with a methylation state specific primer complementary to a first target nucleic acid region containing one or more of the selected nucleotides; (c) treating the contacted target nucleic acid molecule under nucleic acid synthesis conditions; (d) treating the synthesized products under base specific cleavage conditions; and (e) detecting the mass of the cleaved products, wherein: a change in mass of one or more cleaved products compared to a reference mass indicates that a nucleotide locus in a second region in a target is methylated, wherein the second region does not overlap with the first region, whereby presence of one or more methylated loci in the second region confirms true methylation specific amplification.