期刊
SYNTHETIC COMMUNICATIONS
卷 48, 期 13, 页码 1701-1714出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00397911.2017.1421665
关键词
Antimicrobial activity; beta-cyclodextrin; multicomponent reaction; spiro[acridine-9,3 '-indole]2 ',4,4 '(1 ' H 5 ' H1 ' H)-trione; supramolecular catalyst
资金
- Special Assistance Programme SAP, University Grants Commission, New Delhi, India
We have developed an perceptive and facile approach for the synthesis of new spiro[acridine-9,3-indole]-2,4,4(1H,5H,10H)-trione derivatives (4a-t) by one-pot four component condensation involving two equivalence of dimedone (1), substituted anilines (2a-t), and isatin (3) catalyzed by -cyclodextrin in water within short reaction time at 80 degrees C in good to excellent yields. We believe that this novel procedure may open the door for the easy generation of new and bioactive spiro[acridine-9,3-indole]-2,4,4(1H,5H,10H)-triones. The most exciting feature of this methodology is its mechanism involving the unusual ring opening of an isatin moiety followed by recyclization. Synthesized compounds were evaluated for their antimicrobial activities against four bacteria and three fungi. All the spirooxindole derivatives exhibited significant antibacterial activity against bacteria and fungi. Among 20 compounds screened, compound (4i) and (4h) was found to be more active against tested bacterial strain. [GRAPHICS] .
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