The present invention relates to a compound represented by the formula (I):
(wherein, R
3
, R
6
, R
7
and R
21
are the same as or different from one another and each represents a hydroxyl group etc.), a pharmacologically acceptable salt thereof or a hydrate of them. The compound (I) of the present invention suppresses angiogenesis, in particular, suppresses VEGF production in a hypoxic condition and is useful as a therapeutic agent for treating solid cancer.
本发明涉及一种由式(I)表示的化合物:(其中,R3、R6、R7和R21相同或不同,每个代表羟基等),其药学上可接受的盐或
水合物。本发明的化合物(I)抑制血管生成,特别是在低氧条件下抑制V
EGF的产生,并且可用作治疗实体癌的治疗剂。