| 摘要 |
<p>A cancerous metastasis inhibitor containing a benzoic acid derivative which is represented by general formula (I) and has a remarkably excellent cancerous metastasis inhibitory effect as the active ingredient; the use of the benzoic acid derivatives for producing the cancerous metastasis inhibitor; and a method of inhibiting cancerous metastasis by administering an effective amount of the benzoic acid derivative to mammals. In said formula (I), R1, R2, R3 and R4 may be the same or different and each represents hydrogen, hydroxy or trimethylsilyl, or alternatively R3 and R4 are bonded to each other to represent lower alkyl-substituted tetramethylene; and X represents -COCH=C(OH)-, -NHCO- or -CONH-, provided when R3 and R4 are bonded to each other to represent lower alkyl-substituted tetramethylene, X represents -COCH=C(OH)- or -CONH-.</p> |
