| 摘要 |
The invention concerns novel flavone and isoflavone derivatives of formulae (Ia) and (Ib) wherein: X represents a group of formula -COOR, or -PO(OR)<SUB>2</SUB>; R represents a hydrogen atom or an alkaline or alkaline-earth metal, or a lower alkyl group; R<SUB>1 </SUB>represents a hydroxy group, a lower alkoxy group or an acyloxy group; R<SUB>2 </SUB>and R<SUB>3</SUB>, identical or different, represent a hydrogen or halogen atom, or a trifluoromethyl group, a trichloromethyl group, a hydroxy group, an alkoxy group or an acyloxy group comprising 1 to 5 carbon atoms, or R<SUB>2 </SUB>and R<SUB>3 </SUB>can combine to form an alkylene dioxy group. The invention is useful for rheumatic diseases. |
