An angiogenesis inhibitor containing a compound represented by the formula
1
wherein R
4
is an optionally substituted hydrocarbon group and the like; Xa is a bond and the like; k is an integer of 1 to 3; Ya is an oxygen atom and the like; ring Ea is a benzene ring optionally having additional substituent(s); p is an integer of 1 to 8; R
5
is a hydrogen atom and the like; q is an integer of 0 to 6; r is 0 or 1; R
8
is a hydroxy group and the like; and R
6
and R
7
are hydrogen atoms and the like, or a salt thereof is useful as an agent for the prophylaxis or treatment of tumor and the like.
一种含有由下式表示的化合物的血管生成
抑制剂
其中R4是可选择地取代的碳氢基团等;Xa是键等;k是1到3的整数;Ya是氧原子等;环Ea是苯环,可选择地具有额外的取代基;p是1到8的整数;R5是氢原子等;q是0到6的整数;r为0或1;R8是羟基等;R6和R7是氢原子等,或其盐,可用作预防或治疗肿瘤等的药剂。