76745-76-1Relevant academic research and scientific papers
Reactions of 2H-3,1-Benzoxazine-2,4-(1H)dione (Isatoic Anhydride) (1) with Anions of 1,4-Dihydro-5H-Pyrazol-5-ones: Synthesis of Pyrazoloquinazolin-9-ones
Sircar, Jagadish C.,Capiris, Thomas,Kesten, Stephen J.
, p. 117 - 121 (2007/10/02)
Reactions of 2H-3,1-benzoxazine-2,4-(1H)dione (isatoic anhydride) (1) with anions of 1,4-dihydro-5H-pyrazol-5-ones (2) gave pyrazoloquinazolin-9-ones (3) via the nucleophilic attack of the anion 2b rather than 2a.However, in the case of 5-methoxyis
Pyrazolo[5,1-b]quinazolin-9-(4H)-ones and anti-allergic pharmaceutical compositions containing them
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, (2008/06/13)
Certain pyrazolo[5,1-b]quinazolin-9-(4H)-ones are disclosed. These compounds prevent the allergic response in mammals. Novel alkylthioanthranilic acids, useful as intermediates, are also disclosed.
