
Phytochemistry p. 111 - 114 (1990)
Update date:2022-09-26
Topics:
Nash, Robert J.
Fellows, Linda E.
Dring, Janet V.
Fleet, George W. J.
Girdhar, Aarti
et al.
Two new alexines have been isolated from Castanospermum australe.The structure of 1,7a-diepialexine was firmly established by X-ray crystallographic analysis of the corresponding 1,7-isopropylidene derivative.The structure of the second new alexine was tentatively assigned as 7,7a-diepialexine or its enantiomer.The abilities of naturally occuring alexines to inhibit mouse gut disaccharidase and fungal glucan 1,4-α-glucosidase are compared.
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