[摘要]：Linear diterpenes isolated from aerial parts of Baccharis thyinifolia (1-3) were tested for insect growth inhibitory activity against Tenebrio molitor larvae. Compounds 4-16 were prepared by various chemical transformations. The diterpenes 6,10-(E,E)-thymifodioic acid (1), the butenolide 3, and the derivatives 4, 11, and 14 produced developmental deficiencies in assays using topical application on fifth instar larvae of T molitor. Compound 3 is a new natural product.
