Anthriscifolcine A, a C18-diterpenoid alkaloid

Acta Crystallogr Sect E Struct Rep Online. 2011 Jan 15;67(Pt 2):o395. doi: 10.1107/S1600536811001346.

Abstract

The title compound, C(26)H(39)NO(7), which was isolated from Delphinium anthriscifolium var. majus, has a lycoctonine carbon skeleton containing four six-membered rings (A, B, D and E) and three five-membered rings (C, F and G). Rings A, B and E adopt chair conformation, while ring D adopts a boat conformation. Rings C and F adopt envelope conformations.