Norditerpenoid alkaloids from Delphinium pyrimadale

From the aerial parts of Delphinium pyrimadale a new norditerpenoid alkaloid, 8-acetylcondelphine, has been isolated, together with the known alkaloids isotalatizidine, condelphine and senbusine C. The structure of the new alkaloid was established on the basis of H-1, C-13, APT, DEFT homonuclear COSY, HETCOR and COLOC NMR spectral studies and by chemical reactions. (C) 1998 Published by Elsevier Science Ltd. All rights reserved

Diterpenoid alkaloids from Delphinium uncinatum

From the aerial parts of Delphinium uncinatum a new diterpenoid uncinatine and four known norditerpenoid alkaloids have been isolated. By spectral data (H-1 and C-13 NMR) the known compounds were established as 14-acetylperegrine, 14-acetylvirescenine, condelphine and delbrusine. The structure of the new alkaloid was deduced by 1D and 2D NMR techniques. (C) 1998 Elsevier Science Ltd. All rights reserved

Royleinine, a new norditerpenoid alkaloid from Delphinium roylei

A new norditerpenoid alkaloid, royleinine (I) has been isolated from the aerial parts of Delphinium roylei Munz, along with three more norditerpenoid alkaloids, isotalitazidine, condelphine and senbusine-C. The structure of 1 has been established on the basis of its spectroscopic data (IR, HRMS,H-1, C-13, H-1 - H-1 and H-1 - C-13 COSY and NOESY spectra)

Norditerpenoid alkaloids from the roots of Aconitum leave Royle

From the roots of Aconitum leave Royle growing wild in Northern Pakistan, Swat district, three new alkaloids, 8-methyl-lycaconitine (1), 14-demethyllycaconitine (2), N-deethyllycaconitine-N-aldehyde (3) have been isolated along with four known compounds, lappaconitine (4), lycaconitine (5), lapaconidine (6) and lycoctonine (7)

Insect repellent activity of diterpenoid alkaloids

Diterpenoid and norditerpenoid alkaloids were tested against Tribolium casteneum (Herbst,) in order to assess their repellent activity. Of 29 tested alkaloids, 21 compounds showed promising insect repellent activity, while eight of them were not found to be active. The alkaloids were obtained from Delphinium, Consolida and Aconitum species. The highest activity was found in hetisine, a diterpene alkaloid (59.37%) and the lowest activity in another diterpene alkaloid venulol (31.25%), Copyright (C) 2001 John Whey & Sons, Ltd

Willipelletierine, a new diterpenoid alkaloid from Consolida scieroclada (Boiss.) Schrod

From the aerial parts of Consolida scleroclada (Boiss.) Schrod. collected in Turkey, a new diterpenoid alkaloid named willipelletierine has been isolated along with the known diterpenoid alkaloids aconitine, lapaconidine, and delcosine. The structure for willipelletierine was established on the basis H-1, C-13, DEPT, homonuclear H-1 COSY, HETCOR and NOESY NMR studies

Norditerpenoid alkaloids from Delphinium formosum

From the aerial parts of Delphinium formosum, a new norditerpenoid alkaloid, N-acetyldelectine (14-demethylajacine), was isolated, in addition to six known compounds, lycoctonine, delsemine A, delsemine B, delectine, delcosine and anthranoyllycoctonine. The structures of the compounds were determined by spectroscopic methods

Consolarine, a novel norditerpenoid alkaloid from Consolida armeniaca

From the aerial parts of Consolida armeniaca, (Stapf. Ex Huth.) Schrod. a new norditerpenoid alkaloid named consolarine has been isolated along with the known alkaloids ajadelphinine, gigactonine, and lycoctonine. The structure of consolarine (2) was established on the basis of H-1, C-13, DEFT, homonuclear H-1 COSY, HETCOR, NOESY, and COLOC NMR spectral studies

A minor pyrrolizidine alkaloid from Heliotropium bovei

Boveinine (1), a minor pyrrolizidine alkaloid, was isolated from the aerial parts of Heliotropium bovei and its structure was determined to be 1-[(2'-hydroxy-2'-(1-hydroxy-1-methylethyl) -3'-methoxybutanoyl-oxymethyl]-5,6-dihydropyrrolizidine-7-one