4.0 Article

Multicomponent Dipolar Cycloaddition Strategy: Combinatorial Synthesis of Novel Spiro-Tethered Pyrazolo[3,4-b]quinoline Hybrid Heterocycles

Journal

ACS COMBINATORIAL SCIENCE
Volume 18, Issue 5, Pages 262-270

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acscombsci.6b00003

Keywords

1,3-dipolar cycloaddition; azomethine ylide; alpha-amino acid; isatin; pyrazolo[3,4-b]quinoline; spiro-oxindole; spiro-pyrrolidine

Funding

  1. University Grants Commission, New Delhi [42-242/2013 (S.R.)]
  2. Department of Science and Technology, New Delhi under IRHPA program
  3. Department of Science and Technology, New Delhi under PURSE program
  4. Deanship of Scientific Research at King Saud University [RGP-VPP-026]

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The stereoselective syntheses of a library of novel spiro-tethered pyrazolo[3,4-b]quinoline pyrrolidine/pyrrolothiazole/indolizine oxindole/acenaphthene hybrid heterocycles have been achieved through the 1,3-dipolar cycloaddition of azomethine ylides generated in situ from a amino acids and 1,2-diketones to dipolarophiles derived from pyrazolo [3,4-b]quinoline derivatives.

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