ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Alternative two-step route to khellactone analogues using silica tungstic acid and sodium hydrogen phosphate

Bahador Karami, Saeed Khodabakhshi, and Khalil Eskandari

Department of Chemistry, Yasouj University, 75918-74831, Yasouj, P.O. Box 353, Iran

E-mail: karami@mail.yu.ac.ir

Abstract: A series of coumarins was synthesised via the silica tungstic acid-catalysed Pechmann reaction; some of these were employed for known three-component reactions with aromatic aldehydes and malononitrile in the presence of sodium hydrogen phosphate (Na₂HPO₄) as a basic catalyst, affording a variety of potentially anti-HIV active khellactone analogues.

Keywords: anti-HIV – khellactone – coumarins – Pechmann condensation – silica tungstic acid – sodium hydrogen phosphate

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-013-0411-z

Chemical Papers 67 (11) 1474–1478 (2013)