Synthesis and anticonvulsant activity of 3-amino-4(3<i>H</i>)-quinazolinones
作者:M. J. Kornet、T. Varia、W. Beaven
DOI:10.1002/jhet.5570200623
日期:1983.11
Several 3-amino-4(3H)-quinazolinones were prepared from o-aminobenzoylhydrazines and triethyl orthoformate or from isatoic anhydrides, hydrazines and triethyl orthoformate. o-Aminobenzoylhydrazine intermediates were obtained by reaction of isatoic anhydrides with hydrazines. Some of the aminoquinazolinones displayed anticonvulsantactivity in mice.
Abstract 2-Alkyl and 2-aryl-3-(phenylamino)quinazolin-4(3H)-ones 4a–h were synthesized in a one-potthree-component condensation of an isatoic anhydride 1a–h, ethyl or methyl ortho ester and phenylhydrazine in the presence of KAl(SO4)2·12H2O (alum) as a nontoxic, reusable, inexpensive and easily available catalyst. The synthesis was conducted undermicrowaveirradiation or classical heating. Products