The present invention relates to a compound represented by the formula (I):
(wherein, R3, R6, R7 and R21 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.
本发明涉及由式(I)代表的化合物:
(其中,R3、R6、R7 和 R21 彼此相同或不同,且各自代表羟基等)、其药理学上可接受的盐或它们的
水合物。本发明的化合物(I)可抑制血管生成,特别是在缺氧条件下抑制血管内皮生长因子的产生,可作为治疗实体癌的治疗剂。