Two new C19-diterpenoid alkaloids from roots Aconitum hemsleyanium var. atropurpureum

A new franchetine-type C19-diterpenoid alkaloid 3-hydroxyfranchetine 1 and a new aconitine-type C19-diterpenoid alkaloid atropurpursine 2 have been isolated from the roots of Aconitum hemsleyanium var. atropurpureum. The structures of these new alkaloids were established on the basis of spectral data.