28405-99-4Relevant academic research and scientific papers
GLUCOSYLOXY ALKALOIDS FROM PANCRATIUM BIFLORUM
Ghosal, Shibnath,Kumar, Yatendra,Singh, Shripati
, p. 1167 - 1172 (1984)
From fluids of flower stems and bulbs, and from extracts of roots of Pancratium biflorum, collected at different stages of growth, three new glucosyloxy alkaloids, viz. hordenine-4-O-β-D-glucoside, lycorine-1-O-β-D-glucoside and pseudolycorine-1-O-β-D-glucoside, have been isolated and characterized.Additionally, three proto alkaloids, β-phenethylamine, tyramine and hordenine, together with four true alkaloids, lycorine, pseudolycorine, pretazettine and tazettine, encountered before in other members of the Amaryllidaceae, have now been isolated also from this species.Ontogenic variations of alkaloidal constituents have been observed.The ability of the alkaloidal constituents to complex with divalent metal ions and phytosterols has been examined with a view to evaluating their significance in plant biochemistry. - Keywords : Pancratium biflorum; Amaryllidaceae; proto alkaloids; β-phenethylamine; tyramine; hordenine; alkaloids; lycorine; pseudolycorine; pretazettine; tazettine; glucosyloxy alkaloids; hordenine-4-O-β-D-glucoside; lycorine-1-O-β-D-glucoside; pseudolycorine-1-O-β-D-glucoside; ontogenic variation; alkaloid-metal ion complex; alkaloid-sterol complex; root growth promoter.
Total syntheses of (-)-haemanthidine, (+)-pretazettine, and (+)-tazettine
Baldwin, Steven W.,Debenham, John S.
, p. 99 - 102 (2007/10/03)
(matrix presented) Haemanthidine Pretazettine Tazettine The total syntheses of the amaryllidaceae alkaloids haemanthidine, pretazettine, and tazettine as optically pure enantiomers are reported. Using D-mannose as the starting material, the critical relat
NARCISINE. AN ALKALOID FROM NARCISSUS TAZETTA
Abdallah, Omar M.
, p. 1447 - 1448 (2007/10/02)
I report the isolation of lycorine, pseudolycorine, galanthamine, haemanthamine, tazettine, pretazettine and the new alkaloid narcisine from Narcissus tazetta bulbs.Structural elucidation was carried out by spectroscopic analysis.
ALKALOIDS FROM NARCISSUS CONFUSUS
Bastida, Jaume,Viladomat, Francesc,Llabres, Jose M.,Codina, Carles,Feliz, Miguel,Rubiralta, Mario
, p. 1519 - 1524 (2007/10/02)
Key Word Index - Narcissus confusus; Amaryllidaceae; haemanthamine; galanthamine; N-formylgalanthamine; pretazettine; two-dimensional NMR spectra.We report the isolation of haemanthamine, galanthamine, pretazettine and the new alkaloid N-formylgalanthamine from Narcissus confusus plants.Structural determination was carried out by spectroscopic analyses and application of two-dimensional NMR spectroscopy.
