PROBLEM TO BE SOLVED: To provide new diterpene useful as an anticancer agent, and a propolis extract containing the diterpene.SOLUTION: Provided is diterpene represented by formula (1) extracted from a propolis original lump using the plants of the Araucariaceae and the Flacourtiaceae as sources, and also provided is a propolis extract containing the diterpene.COPYRIGHT: (C)2016,JPO&INPIT【課題】抗癌剤として有用な新規ジテルペン、及び該ジテルペンを含有すプロポリス抽出物の提供。【解決手段】ナンヨウスギ科及びイイギリ科の植物を起源とするプロポリス原塊から抽出した式(1)で示されるジテルペン、及び該ジテルペンを含有すプロポリス抽出物。【選択図】なし