4H-1-benzopyran-4-one derivative or its salt, process for producing the same and pharmaceutical composition comprising the same as active ingredient

This invention relates to a 4H-1-benzopyran-4-one derivative represented by the formula: < IMAGE > or a salt thereof, a process for producing the same and a pharmaceutical composition comprising the same as active ingredient. PROCEDIMIENTO DE PREPARACION DE DERIVADOS DE 4H-1-BENZOPIRAN-4-ONA O...

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1. Verfasser: TAKANO SHUNTARO
Format: Patent
Sprache:eng ; spa
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