由台灣延胡索(Corydalis formosana Hayata, Corydalis tashiroi Makino)的種子中分離出三種生物鹼,分別為Palmatine, dl-tetrahydropal-matine, Protopine,其中以Palmatine為主成分。 Three alkaloids have been isolated from the seed of Corydalis tashiroi Makino. and these were identified as palmatine (I), dl-tetrahydropalmatine (Ⅱ), protopine (Ⅲ), respectively.