Research Article: 8-O-Ethyl­yunaconitine from the roots of Aconitum carmichaeli Debx.

Date Published: July 01, 2012

Publisher: International Union of Crystallography

Author(s): San-Lin Wu, Fang Liu.


The title compound [systematic name: (1α,3α,6α,8β,13β,14α,16β)-20-ethyl-8-eth­oxy-3,13-dihy­droxy-1,6,16-trimeth­oxy-4-(meth­oxy­meth­yl)aconitan-14-yl 4-meth­oxy­benzoate], C35H51NO10, was isolated from roots of Aconitum carmichaeli Debx., which is a typical C19-diterpenoid alkaloid. The mol­ecule has an aconitane carbon skeleton with four six-membered rings and two five-membered rings. The six-membered rings adopt chair conformations or boat conformations, while the five-membered rings have envelope conformations. Intra­molecular O—H⋯O and O—H⋯N hydrogen bonds help to stabilize the mol­ecular structure. Weak inter­molecular C—H⋯O inter­actions occur in the crystal structure.

Partial Text

For a related structure, see: Wang et al. (2009 ▶).




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