Synthesis and antimicrobial activity of some methyl-2-[<i>N</i>-coumarin-6â²-yl]-3-oxo-2,3-dihydro-1<i>H</i>-isoindolone-5-carboxylates
作者:Aabid Ali Mir、Vinata V. Mulwad、G. K. Trivedi
DOI:10.1002/jhet.274
日期:——
N-substituted furylmethylimines are prepared by condensing 6-aminocoumarins with furfural, these on sodium borohydride reduction afford N-[coumarin-6′-yl]-2-furylamines. Intramolecular [4+2] cycloaddition of these amines with maleic anhydride results into 3-[N-coumarin-6′-yl]-4-oxo-10-oxa-3-azatricyclo[5.2.1.01.5]dec-8-ene-6-carboxylic acids . The [4+2] cycloadducts on p-toluene sulphonic acid treatment followed