Diterpenoid Alkaloids from Delphinium pictum Willd. The Structure of Pictumine

HETEROCYCLES
1989.0

Abstract

A new C-19 diterpenoid alkaloid pictumine (1) was isolated from Delphinium pictum Willd. subsp. pictum together with the known bases neoline (2), bullatine C (14-acetylneoline) (3), delphisine (8,14-diacetylneoline) (4), delphinine (5), chasmaconitine (6), and chasmanthinine (7). The structure of the new alkaloid was established by 1H and 13C-nmr spectra. The 13C-nmr data for alkaloids (3), (6), and (7) are also presented. © 1989.

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