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ABSTRACT: The title compound, C(24)H(39)NO(6) [systematic name: (1α,6α,14α,16β)-N-ethyl-6,16-dimeth-oxy-4-meth-oxy-methylaconitane-1,8,14-triol], is a C(19)-diterpenoid alkaloid from the roots of Aconitum flavum Hand. The mol-ecule has an aconitane carbon skeleton with four six-membered rings and two five-membered rings. Both five-membered rings adopt envelope conformations. Two six-membered rings adopt chair conformations, whereas the other two adopt boat conformations. Intra-molecular O-H⋯O and O-H⋯N and inter-molecular O-H⋯O hydrogen bonds are present in the structure. In the crystal, one methyl group is disordered over two sites with an occupancy ratio of 0.70 (3):0.30 (3).
Acta Crystallographica Section E Structure Reports Online 06/2011; 67(Pt 6):o1435. DOI:10.1107/S1600536811015170 · 0.35 Impact Factor