Four new C19-diterpenoid alkaloids, 3-dehydroxyl-lipoindaconitine (1), 8-dehydroxyl-bikhaconine (2), 19R-acetonyl-talatisamine (3), and 16-hydroxyl-vilmorisine (4), were isolated from the roots of Aconitum ouvrardianum. Their structures were elucidated by spec... ...

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