GLUCOSYLOXY ALKALOIDS FROM PANCRATIUM BIFLORUM

Article abstract of DOI:10.1016/S0031-9422(00)82631-X

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.