Structures of Crassicaulisine and Crassicaulidine, two New Diterpenoid Alkaloids.
From the roots of Aconitum crassicaule, two new diterpenoid alkaloids, crassicaulisine and crassicaulidine, were isolated. The structure of crassicaulisine, C (24)H (39)O (7)N, has been elucidated as 3 on the basis of chemical and spectral data, while the structure of crassicaulidine, C (24)H (39)O (8)N, has been shown as 4 on the basis of chemical data and spectral comparison with crassicaulisine.
Fengpeng
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Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing, China.
Qicheng
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