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具有不饱和内脂环的香豆素类多数存于植物界，其中一部分有抗肿瘤作用。多数在伞形科、芸香科和藤黄科中。从伞形科前胡属植物韧皮前胡（Ｐｅｕｃｅｄａｎｕｍｔａｕ－ｒｉｃｕｍ）分离的前胡素（Ｐｅｕｃｅｄａｎｉｎ）和花椒毒素（Ｘａｎ－ｔｈｏｔｏｘｉｎ）对艾氏瘤和...
Coumarins with unsaturated internal alicyclic rings are mostly found in the plant kingdom, some of which have anti-tumor effects. Most are in the Umbelliferae, Rutaceae and Garcinia. Peucedanin and Xantoxanthin isolated from Peucedanum traumatus (Peucedanumtau-ricum) on the Ecstasy and ...