New domino reaction. One pot synthesis of 4,7-dihydroxythioaurone derivatives from benzaldehydes and 4-acetyl-2-oxo-benz[1,3]oxathiole
摘要:
A convenient synthesis of 4,7-dihydroxythioaurone derivatives by a one pot reaction of benzaldehydes with 4-acetyl-2-oxobenz[1,3]oxathioles and piperidine acetate in DMSO is described. The structures of the compounds, including double bond geometry were proved unequivocally by NMR methods. The thioaurone ring system seems to be formed by three consecutive reactions: opening of the oxathiolone ring with piperidine, oxidation of the formed mercapto group with DMSO or/and air to disulfide, and condensation with aldehyde. (c) 2005 Elsevier Ltd. All rights reserved.
Acid-catalyzed synthesis of oxathiolone fused chalcones. Comparison of their activity toward various microorganisms and human cancer cells line
作者:Marek T. Konieczny、Wojciech Konieczny、Michał Sabisz、Andrzej Skladanowski、Roland Wakieć、Ewa Augustynowicz-Kopeć、Zofia Zwolska
DOI:10.1016/j.ejmech.2006.12.014
日期:2007.5
Substituted oxathiolone fused chalcones were prepared by condensation of 4-acetyl-5-methoxy-2-oxo-benz[1,3]oxathiole with benzaldehydes under acidic conditions. The compounds were tested for cytotoxic, antibacterial, antifungal and tuberculostatic activity. Three derivatives demonstrated weak activity against HeLa cells, two were slightly active against Micrococcus luteus and Staphylococcus aureus, and one was active against Mycobacterium tuberculosis H(37)Rv. (c) 2007 Elsevier Masson SAS. All rights reserved.