3-(1H-tetrazol-5-yl)-4(3H)-quinazolinones useful as antiallergic agents are described herein. The compounds are prepared by the reaction of an appropriate 2-amino-N-(1H-tetrazol-5-yl)benzamide with an appropriate ortho ester.
Process for the preparation of 4(3H)-quinazolinones
申请人:Merrell Dow Pharmaceuticals Inc.
公开号:US04644065A1
公开(公告)日:1987-02-17
A new process for the preparation of 3-(1H-tetrazol-5-yl)-4(3H)-quinazolinones from anthranilic acid derivatives is described herein. Additional reactants used in the process are 4-aminotetrazole and a trialkoxymethane or the reaction can be carried out using the imidic ester obtained from these two compounds.
3-(1H-tetrazol-5-yl)-4(3H)-quinazolinones useful as antiallergic agents are described herein. The compounds are prepared by the reaction of an appropriate 2-amino-N-(1 H-tetrazol-5-yl)benzamide with an appropriate orthoester.
Tetrazolylquinazolinones as anti-hyperuricemic agents
申请人:MERRELL DOW PHARMACEUTICALS INC.
公开号:EP0267442A2
公开(公告)日:1988-05-18
A method of reducing serum levels of uric acid which comprises administration of 3-(1H-tetrazol-5-yl)-4(3H)-quinazolinone or its pharmaceutically acceptable salts is described herein.