Elsevier

Tetrahedron Letters

Volume 45, Issue 17, 19 April 2004, Pages 3447-3449
Tetrahedron Letters

New synthetic approach to [1]benzopyrano[4,3-b]pyridin-5-one derivatives

https://doi.org/10.1016/j.tetlet.2004.03.009Get rights and content

Abstract

A new synthesis of [1]benzopyrano[4,3-b]pyridin-5-ones 4 was developed starting from 3-formyl-coumarin N-functionalized amidines 3. The reaction is based likely on the intramolecular cyclocondensation of the C-α amidinic carbanion in basic medium on the formyl group.

References (16)

  • E.B Yang et al.

    Biochem. Biophys. Res. Commun.

    (1999)
  • E.M Beccalli et al.

    Tetrahedron

    (2002)
  • N.L.J.M Broekhof et al.

    Tetrahedron Lett.

    (1979)
    C Mannich et al.

    Chem. Ber.

    (1936)
    R Knorr et al.

    Synthesis

    (1983)
    G.B Fisher et al.

    Synth. Commun.

    (1994)
  • S Thaisrivongs et al.

    J. Med. Chem.

    (1996)
  • G Rappa et al.

    Oncology Res.

    (2000)
  • K Ukawa et al.

    Heterocycles

    (1986)
  • H Bräuninger et al.

    Wissenschaftliche Zeitschrift der Wilhelm-Pieck-Universitaet Rostock

    Naturwissenschaftliche Reihe

    (1986)
  • D Heber

    Arch. Pharm.

    (1987)
There are more references available in the full text version of this article.

Cited by (20)

View all citing articles on Scopus
View full text