Anti-tumor agent comprising as an active ingredient the compound and the compound represented by the following general formula (1).(A) n 1 - (B) n 2 ··· the general formula (1) Here, n 1 represents an integer of any one of 6~20； n 2 represents an integer of 1~20； A is a group represented by the following general formula (2)； B is the following general a group represented by the formula (3)； R 1-1 ~R 1-3 indicates -O-Sugar etc.； R 1-4 represents a -Catechin like； R 1-5 are -H, -OH The indicated； R 2 indicates an -O-Sugar like.下記一般式（１）で示される化合物および同化合物を有効成分として含む抗腫瘍剤。（Ａ）ｎ１－（Ｂ）ｎ２・・・一般式（１）ここで、ｎ１は６～２０のいずれかの整数を示し；ｎ２は１～２０のいずれかの整数を示し；Ａは下記一般式（２）で示される基であり；Ｂは下記一般式（３）で示される基であり；Ｒ１－１～Ｒ１－３は－Ｏ－Ｓｕｇａｒ等を示し；Ｒ１－４は－Ｃａｔｅｃｈｉｎ等を示し；Ｒ１－５は－Ｈ、－ＯＨを示し；Ｒ２は－Ｏ－Ｓｕｇａｒ等を示す。
