title: Structures of crassicauline B and crassicaulidine.
abstract: Two minor alkaloids, crassicauline B and crassicaulidine, were isolated from the roots of ACONITUM CRASSICAULE (1, 2). The structure of crassicauline B, C (27)H (31)O (4)N, is now deduced as ( 1), while the previously assigned structure of crassicaulidine has been further confirmed as ( 7) on the basis of chemical data and (13)C-NMR spectrum.
authors.affiliation: Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing, People's Republic of China.
authors.forename: F P
authors.initials: FP
authors.lastname: Wang
authors.forename: X T
authors.initials: XT
authors.lastname: Liang