| abstract |
Anthranilic acid derivatives represented by general formulae (1) or (2) (wherein Y1 and Y2 are each a group represented by general formula (3)-1, (3 )- 2 or the like; X1 is O, S or the like; X2 is O or S; and R1 to R4 are each H or the like). These compounds have a cytotoxic activity and are therefore useful as cancer remedies, and they also exhibit an inhibitory activity against the production of IgE antibody and are useful as preventive or therapeutic agents for allergic diseases. |