Author's Organization:Osaka Research Laboratory, Tanabe Seiyaku Co., Ltd. Osaka Research Laboratory, Tanabe Seiyaku Co., Ltd. Osaka Research Laboratory, Tanabe Seiyaku Co., Ltd. Osaka Research Laboratory, Tanabe Seiyaku Co., Ltd. Osaka Research Laboratory, Tanabe Seiyaku Co., Ltd. Faculty of Pharmaceutical Sciences, Osaka University Faculty of Pharmaceutical Sciences, Osaka University Faculty of Pharmaceutical Sciences, Osaka University
Two alkaloids norsecurinine and dihydronorsecurinine, were isolated from the root barks of Securinega virosa BAILL. Their planar structures and absolute stereochemistries were elucidated.