Design, Synthesis and Biological Evaluation of Novel Anthraniloyl-AMP Mimics as PQS Biosynthesis Inhibitors Against Pseudomonas aeruginosa Resistance
作者:Shekh Sabir、Sujatha Subramoni、Theerthankar Das、David StC. Black、Scott A. Rice、Naresh Kumar
DOI:10.3390/molecules25133103
日期:——
therefore, it is an attractive target for the development of anti-virulence therapeutics against Pseudomonas resistance. Herein, we report the design and synthesis of novel triazole nucleoside-based anthraniloyl- adenosine monophosphate (AMP) mimics. These analogues had a major impact on the morphology of bacterial biofilms and caused significant reduction in bacterial aggregation and population density
Synthesis of spiroindolenine-3,3′-pyrrolo[2,1-<i>b</i>]quinazolinones through gold(<scp>i</scp>)-catalyzed dearomative cyclization of <i>N</i>-alkynyl quinazolinone-tethered indoles
作者:Wang Wang、Pei-Sen Zou、Li Pang、Yao Lei、Zi-Yi Huang、Nan-Ying Chen、Dong-Liang Mo、Cheng-Xue Pan、Gui-Fa Su
DOI:10.1039/d1ob02492b
日期:——
An efficient gold(i)-catalyzed dearomative cyclization of N-alkynyl quinazolinone-tethered C2-substituted indoles to prepare various spiroindolenine-3,3′-pyrrolo[2,1-b]quinazolinones in good to excellent yields is reported.
Synthesis of 4-(trichloromethyl)pyrido[2′,1′:3,4]pyrazino[2,1-<i>b</i>]quinazolinones through a cyclized dearomatization and trichloromethylation cascade strategy
作者:Xu Zhang、Meng-Yan Wei、Jun-Cheng Su、Cui Liang、Cheng-Xue Pan、Gui-Fa Su、Dong-Liang Mo
DOI:10.1039/d3ob02084c
日期:——
A variety of 4-(trichloromethyl)pyrido[2′,1′:3,4]pyrazino[2,1-b]quinazolinones were prepared in moderate to good yields with high regioselectivity through intramolecular 6-endo-dig cyclization and trichloromethylation of N3-alkynyl-2-pyridinyl-tethered quinazolinones in chloroform. Mechanistic studies revealed that chloroform might serve as a trichloromethyl anion precursor. Furthermore, the reaction
通过分子内6-内环化和三氯甲基化,以中等至良好的产率和高区域选择性制备了多种4-(三氯甲基)吡啶并[2',1':3,4]吡嗪并[2,1- b ]喹唑啉酮。 N 3-炔基-2-吡啶基束缚的喹唑啉酮在氯仿中。机理研究表明,氯仿可能作为三氯甲基阴离子前体。此外,该反应可以很容易地在克级进行,并且通过五个步骤制备了雌酮衍生的4-(三氯甲基)吡啶并[2',1':3,4]吡嗪并[2,1- b ]喹唑啉酮。该方法具有底物范围广、官能团耐受性好、吡啶环脱芳构化新、三氯甲基化试剂为氯仿等特点。
One-Pot, Two-Step Cascade Synthesis of Quinazolinotriazolobenzodiazepines
作者:Kathryn G. Guggenheim、Hannah Toru、Mark J. Kurth
DOI:10.1021/ol301592z
日期:2012.7.20
An operationally simple, one-pot, two-step cascade method has been developed to afford quinazolino[1,2,3]triazolo[1,4]benzodiazepines. This unique, atom-economical transformation engages five reactive centers (amide, aniline, carbonyl, azide, and alkyne) and employs environmentally benign iodine as a catalyst. The method proceeds via sequential quinazolinone-forming condensation and intramolecular azide-alkyne 1,3-dipolar cycloaddition reactions. Substrate scope, multicomponent examples, and mechanistic insights are discussed.
Gold-Catalyzed Selective 6-<i>exo-dig</i> and 7-<i>endo-dig</i> Cyclizations of Alkyn-Tethered Indoles To Prepare Rutaecarpine Derivatives
作者:Xiang-Fei Kong、Feng Zhan、Guo-Xue He、Cheng-Xue Pan、Chen-Xi Gu、Ke Lu、Dong-Liang Mo、Gui-Fa Su
DOI:10.1021/acs.joc.7b02956
日期:2018.2.16
rutaecarpine derivatives via the gold-catalyzed selective cyclization of alkyn-tethered indoles under mild conditions is described. The alkyn-tethered indole can undergo 6-exo-dig cyclization by oxidation and sequential gold catalysis, while it goes through 7-endo-dig cyclization by gold catalysis and sequential oxidation. Substrate scope studies reveal that the selectivity of cyclization was controlled