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Structures of the compounds (1–6) isolated and screened for their anthelmintic activities.
(A) Protopine (1), 13-Oxoprotopine (2) and ochrobirine (3) were isolated from Corydalis crispa14. (B) Isomyristicin (4), bergapten (5) and isoimperatorin (6) were isolated from Pleurospermum amabile15.
