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Report | Regular issue | Vol 23, No. 11, 1985, pp.2873-2883
Published online, 1st January, 1970
DOI: 10.3987/R-1985-11-2873
New Alkaloids from Delphinium staphisagria Linné

S. William Pelletier* and Mohamed M. Badawi

*Department of Chemistry, Institute for Natural Products Research, The University of Georgia, Chemistry Building, Athens, Georgia 30602-2556, U.S.A.

Abstract

Three new C19-diterpenoid alkaloids, delstaphisine (3), delstaphisagrine (4) and delstaphisagnine (5) have been isolated from the seeds of Delphinium staphisagria by a combination of grodient pH extractions and chromatographic techniques, including vacum liquid chromatography (vlc) and centrifugally accelerated, radial, thin-layer chromatography (“Chromatotron”). The structures have been detemined with the aid of proton and carbon-13 nmr spectroscopy. Delstaphisine (3) is the first reported aconitine-type, C19-diterpenoid alkaloid bearing a C(16)-hydroxyl group.