Grandisines C - G, Indolizidine Alkaloids from the Australian Rainforest Tree Elaeocarpus grandis
Author(s)
Katavic, Peter L
Venables, Debra A
Forster, Paul I
Guymer, Gordon
Carroll, Anthony R
Griffith University Author(s)
Year published
2006
Metadata
Show full item recordAbstract
Five new indolizidine alkaloids, grandisines C, D, E, F, and G (4 - 8), and one known indolizidine alkaloid, (-)-isoelaeocarpiline (3), were isolated from the leaves of Elaeocarpus grandis and their structures determined by 1D and 2D NMR spectroscopy. Grandisine C (4) is isomeric with the known compound rudrakine (1). The absolute configuration of grandisine D (5) was deduced by its conversion to (-)-isoelaeocarpiline. Grandisine E (6) contains a novel tetracyclic ring system. Grandisine F (7) is the 14-amino analogue of grandisine C. Grandisine G (8) contains the novel combination of a piperidine attached to an ...
View more >Five new indolizidine alkaloids, grandisines C, D, E, F, and G (4 - 8), and one known indolizidine alkaloid, (-)-isoelaeocarpiline (3), were isolated from the leaves of Elaeocarpus grandis and their structures determined by 1D and 2D NMR spectroscopy. Grandisine C (4) is isomeric with the known compound rudrakine (1). The absolute configuration of grandisine D (5) was deduced by its conversion to (-)-isoelaeocarpiline. Grandisine E (6) contains a novel tetracyclic ring system. Grandisine F (7) is the 14-amino analogue of grandisine C. Grandisine G (8) contains the novel combination of a piperidine attached to an indolizidine. Grandisines C, D, F, and G and (-)-isoelaeocarpiline showed receptor binding affinity for the human d-opioid receptor with IC50 values of 14.6, 1.65, 1.55, 75.4, and 9.9 uM, respectively.
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View more >Five new indolizidine alkaloids, grandisines C, D, E, F, and G (4 - 8), and one known indolizidine alkaloid, (-)-isoelaeocarpiline (3), were isolated from the leaves of Elaeocarpus grandis and their structures determined by 1D and 2D NMR spectroscopy. Grandisine C (4) is isomeric with the known compound rudrakine (1). The absolute configuration of grandisine D (5) was deduced by its conversion to (-)-isoelaeocarpiline. Grandisine E (6) contains a novel tetracyclic ring system. Grandisine F (7) is the 14-amino analogue of grandisine C. Grandisine G (8) contains the novel combination of a piperidine attached to an indolizidine. Grandisines C, D, F, and G and (-)-isoelaeocarpiline showed receptor binding affinity for the human d-opioid receptor with IC50 values of 14.6, 1.65, 1.55, 75.4, and 9.9 uM, respectively.
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Journal Title
Journal of Natural Products
Volume
69
Publisher URI
Subject
Chemical sciences
Biological sciences
Biomedical and clinical sciences