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前已报道在罗汉松科植物中存在具有抗肿瘤活性的二萜双内酯类化合物。为了摸清该科植物的化学成分,本文对小叶罗汉松(Podocarpus brevifolius(Stapf.)Foxw)(罗汉松科罗汉松属)枝叶中的化学成分进行了研究,分离得到10个化合物,运用化学及光谱学方法分别鉴定为异贝壳杉烯(isokaurene,1),△~9-异海松酸(△~9-isodextropimaric acid,
Previously, diterpene lactone compounds with antitumor activity have been reported to exist in Podocarpaceae plants. In order to understand the chemical composition of this family of plants, the chemical constituents of the leaves of Podocarpus brevifolius (Stapf.) Foxw (Podocarpus sylvestris) were studied in this paper. Ten compounds were isolated and used in chemistry and The spectroscopic methods were identified as isokaurene (1) and △~9-isodextropimaric acid (△~9-isodextropimaric acid).