Chromone derivatives
Abstract
Abstract Chromone derivatives of the formula: ##STR1## wherein R 1 is alkoxy, an N,S-containing heterocyclic group or aryloxy in which heterocyclic group may be substituted with halogen or acyl, and aryl may be substituted with amino, alkylamino, acylamino, nitro or alkylenedioxy; R 2 is alkylene; R 3 is hydroxy, alkoxy or a group of the formula ##STR2## in which R 4 is hydrogen, R 5 is hydroxy or amino or R 4 and R 5 means taken together with the adjacent nitrogen atom, piperazinyl substituted with alkyl or hydroxyalkyl; provided that when R 3 is hydroxy or alkoxy, R 1 is an N,S-containing heterocyclic group or aryloxy in which heterocyclic group is substituted with halogen or acyl, and aryl is substituted with amino, alkylamino, acylamino, nitro or alkylenedioxy, and nontoxic, pharmaceutically acceptable salt thereof. These compounds are useful as anti-allergic agents.
Inventors
- 👤 Suminori Umio
- 👤 Ikuo Ueda
- 👤 Masaaki Matsuo
- 👤 Masakazu Kobayashi
- 👤 Osamu Nakaguti
- 👤 Yoshinari Sato
Bibliographic Details
Claims Analysis
Total Claims: 5References Cited (Backward Citations)
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