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Alkaloids of Erythroxylum lucidum stem-bark
(1997)
Thirteen alkaloids were identified from the stem-bark of Erythroxylum lucidum by GC-MS. Seven of these have not been reported previously in the genus Erythroxylum. Most of them are precursors or intermediates in the ...
Characterization of positional and configurational tropane alkaloid isomers by combining GC with NPD, MS and FTIR
(2009)
A purified stem bark extract from Schizanthus grahamii was analyzed by combining capillary gas chromatography with a selective nitrogen phosphorus detector, mass spectrometry and Fourier transform infrared spectroscopy. ...
Separation of four isomeric tropane alkaloids from Schizanthus grahamiii by non-aqueous capillary electrophoresis
(2005)
The potential of non-aqueous capillary electrophoresis was investigated for the separation of four isomeric tropane alkaloids, namely 3α-senecioyloxy-7β-hydroxytropane, 3α-hydroxy-7β-senecioyloxytropane, 3α-hydroxy-7β-an ...
Absolute configuration of tropane alkaloids bearing two α,β-unsaturated ester functions using electronic CD spectroscopy: Application to (R,R)-trans-3- hydroxysenecioyloxy-6-senecioyloxytropane
(2008)
The absolute configuration of heterocyclic natural products substituted with two mobile α,β-unsaturated esters was studied using electronic circular dichroism (CD) spectroscopy. The conformational flexibility of the side ...
Tropane and pyrrolizidine alkaloids in the ithomiines Placidula euryanassa and Miraleria cymothoe (Lepidoptera: Nymphalidae)
(Springer Basel AgBaselSuíça, 1996)
Scopolamine in Brugmansia suaveolens (Solanaceae): Defense, allocation, costs, and induced response
(SpringerDordrechtHolanda, 2007)
Behaviour of N-CH3 Group in Tropane Alkaloids and Correlations in their Properties
(Paripex, 2018-10)
In this work, the influence of common >N-CH3 group present in the three free base, cationic and hydrochloride/bromide structures of scopolamine, heroin, morphine, cocaine and tropane alkaloids in gas and aqueous solution ...
Schizanthines N, O, and P, Tropane Alkaloids from the Aerial Parts of Schizanthus tricolor
(AMER CHEMICAL SOC, 2011-01)
Three tropane alkaloids, named schizanthines N, O, and P (1-3), have been isolated from the crude alkaloid extract of the endemic Chilean plant Schizanthus tricolor. On the basis of extensive NMR studies and MS fragmentation ...
A new tropane alkaloid and other constituents of Erythroxylum rimosum (Erythroxylaceae)
(2013-05-01)
A new tropane alkaloid, named the 7β-acetoxy-3β,6β- dibenzoyloxytropane (1), was isolated from a methanol extract of Erythroxylum rimosum O.E. Schulz leaves. Other known compounds were detected, including quercetin, ...
A new tropane alkaloid and other constituents of Erythroxylum rimosum (Erythroxylaceae)
(2013-05-01)
A new tropane alkaloid, named the 7β-acetoxy-3β,6β- dibenzoyloxytropane (1), was isolated from a methanol extract of Erythroxylum rimosum O.E. Schulz leaves. Other known compounds were detected, including quercetin, ...