PROBLEM TO BE SOLVED: To provide an anti-obesity agent in which there is no fear of a side effect, which is safe, and has an outstanding fat accumulation inhibiting action.SOLUTION: The anti-obesity agent includes rhinacanthin D expressed by formula (1). In addition, the anti-obesity agent includes a new compound A expressed by formula (2).COPYRIGHT: (C)2011,JPO&INPIT【課題】副作用の恐れがなく、安全で、かつ、優れた脂肪蓄積抑制作用を有する抗肥満剤の提供。【解決手段】下記の式(1)で表されるリナカンチンDを含有する抗肥満剤。下記の式(2)で表される新規化合物Aを含有する抗肥満剤。【選択図】図1