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Three labdane diterpenoids from Aframomum sceptrum (Zingiberaceae)
Christabel Tomla1, Pierre Kamnaing, Godfred A Ayimele
1Department of Chemistry, University of Dschang, PO Box 67, Dschang, Cameroon.
Phytochemistry
|May 16, 2002
Abstract:
Three labdane diterpenoids, 8beta,17-epoxy-3beta,7beta-dihydroxy-12(E)-labden-16,15-olide (1), methyl 8beta,17-epoxy-3beta,7beta,15-trihydroxy-12(E)-labden-16-oate (2) and 3beta,7beta,8beta,12zeta,17-pentahydroxylabdan-16,15-olide (3) have been isolated from the seeds of Afromomum sceptrum K. Schum (Zingiberaceae) and their structures assigned on the basis of their spectroscopic properties. Nerolidol, and the known flavonoids 3-acetoxy-4',5,7-trihydroxyflavanone, and 3,4',5,7-tetrahydroxyflavanone were also obtained.