Three labdane diterpenoids from Aframomum sceptrum (Zingiberaceae).
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.
Tomla
Christabel
C
Department of Chemistry, University of Dschang, PO Box 67, Dschang, Cameroon.
Kamnaing
Pierre
P
Ayimele
Godfred A
GA
Tanifum
Eric A
EA
Tsopmo
Apollinaire
A
Tane
Pierre
P
Ayafor
Johnson F
JF
Connolly
Joseph D
JD
D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry; D012639:Seeds / Q000737:chemistry; D030521:Zingiberaceae / Q000737:chemistry*
D004224:Diterpenes; C433017:labdane