Tianjin Hemay Oncology Pharmaceutical Co., Ltd.

Tianjin Hemay Bio-tech Co., Ltd.

Zhenzhong Li

Hesheng Zhang

Aihong Huo

Disclosed are a compound represented by formula (I) and a pharmaceutically acceptable salt thereof, wherein R, R, R, R, R, W, n are defined as in the present application. Also disclosed is a method for treating cancer, comprising administering to a subject in need thereof a therapeutically effective amount of the compound represented by formula (I) or a pharmaceutically acceptable salt thereof. The compound and a salt thereof according to the present application possess good anticancer and/or antitumor activity, and good water solubility and stability, as well as good tolerance in animal bodies. Also disclosed is a process for preparing a compound represented by formula (I) of the present application.

Tetracyclic anthraquinone derivatives

Disclosed are a compound represented by formula (I) and a pharmaceutically acceptable salt thereof,  reacting a compound represented by formula (II) with a compound represented by formula (III) in the presence of a condensation agent to obtain a compound represented by formula (I).

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Tianjin, China

Zhenzhong Li