Synthesis of New 3-(2-Chloroquinolin-3-yl)-5-Phenylisoxazole Derivatives via Click-Chemistry Approach
摘要:
Herein, we report the synthesis of new substituted 3-(2-chloroquinolin-3-yl)-5-phenylisoxazole (3a-j) by click chemistry in good to moderate yields. This approach is based on the regioselective copper(I)-catalyzed cycloaddition between different nitrile oxides derived from 2-chloroquinoline-3- carbaldehyde (2a-j) and phenylacetylene. Finally these derivatives were screened for their antibacterial evaluation in vitro against three Gram-negative clinical bacteria: Escherichia coli, Pseudomonas aeruginosa and Acinetobacter baumannii using standard methods.
Synthesis of New 3-(2-Chloroquinolin-3-yl)-5-Phenylisoxazole Derivatives via Click-Chemistry Approach
摘要:
Herein, we report the synthesis of new substituted 3-(2-chloroquinolin-3-yl)-5-phenylisoxazole (3a-j) by click chemistry in good to moderate yields. This approach is based on the regioselective copper(I)-catalyzed cycloaddition between different nitrile oxides derived from 2-chloroquinoline-3- carbaldehyde (2a-j) and phenylacetylene. Finally these derivatives were screened for their antibacterial evaluation in vitro against three Gram-negative clinical bacteria: Escherichia coli, Pseudomonas aeruginosa and Acinetobacter baumannii using standard methods.
An Expeditious Room Temperature Stirring Method for the Synthesis of Isoxazolo[5,4-b]quinolines
作者:Kirti S. Niralwad、Bapurao B. Shingate、Murlidhar S. Shingare
DOI:10.5012/jkcs.2011.55.5.805
日期:2011.10.20
The synthesis of different derivatives of isoxazolo[5,4-b]quinoline by the cyclization reaction of various substituted oximes of quinoline using mild base at ambient temperature. The formation of isoxazolo[5,4-b]quinoline, as a consequence of cheaper and more readily available $K_2CO_3$ and DMF participating in the reaction, is documented.
Pyrazolo[3,4-b]quinolines and their use as antiviral agents
申请人:Sterling Drug Inc.
公开号:US04920128A1
公开(公告)日:1990-04-24
Pyrazolo[3,4-b]quinolines having the formula ##STR1## where R is hydrogen, hydroxy or alkoxy; R.sub.2 is halogen, cyano, carbamyl, carboxy, lower-alkylcarbonyl, amino or aminomethyl; and R.sub.1 is hydrogen or selected substituents as defined herein, are useful as antiviral agents and/or as vasodilators.