title: Bonvalotidine A acetone solvate from Delphinium bonvalotii Franch.
abstract: 5,6β-dihy-droxy-1α,14α,16β-trimeth-oxy-4-methyl-7β,8-methyl-enedi-oxy-20-ethyl-aconitan-6-yl acetate acetone monosolvate), C(27)H(41)NO(8)·C(3)H(6)O, was isolated from Delphinium bonvalotii Franch, and is a typical C(19)-diterpenoid alkaloid. The mol-ecule has a lycoctonine carbon skeleton with four six-membered rings and three five-membered rings. Three six-membered rings adopt the chair conformations while the fourth adopts a boat conformation, while the five-membered rings have the envelope conformations. The solvent mol-ecule links with the organic mol-ecule via a classical O-H⋯O hydrogen bond. Weak C-H⋯O hydrogen bonding is present in the structure. An intra-molecular O-H⋯O hydrogen bond also occurs.
authors: Department of Chemistry and Life Sciences, Leshan Teachers College, Leshan 614004, People's Republic of China.
authors: Shu-Hua
authors: SH
authors: Li
authors: Feng-Zheng
authors: FZ
authors: Chen
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677