The problem of the present invention is to provide a useful prodrug compound of a naphthofuran compound. The present invention relates to a compound represented by the formula (IA):
[wherein each symbol is as described in the DESCRIPTION] or a pharmaceutically acceptable salt thereof.
本发明的问题是提供一种有用的
萘呋喃化合物原药化合物。本发明涉及一种由式(IA)表示的化合物:
[其中各符号如说明书所述]或其药学上可接受的盐。