Triterpenoids from Drypetes chevalieri Beille (euphorbiaceae).
The CH2Cl2/CH3OH (1/1) extract of the dried stem of Drypetes chevalieri Beille afforded two new triterpenoïds named drypechevalin A (11-oxo-beta-amyrin-3beta-ylcaffeate) and drypechevalin B (3,7-dioxo-D:A-friedooleanan-24-al) along with five known compounds: lupeol, lupeone, erythrodiol, putranjivadione, friedelin. Their structures were established on the basis of spectroscopic analysis and chemical evidence.
Wansi
J D
JD
Faculty of Science, Department of Chemistry, University of Douala, P.O. Box 24157, Douala, Cameroon. jdwansi@yahoo.fr
Wandji
J
J
Kamdem
W A F
WA
Ndom
J C
JC
Ngeufa
H E
HE
Chiozem
D D
DD
Chi Shirri
J
J
Choudhary
M I
MI
Tsabang
N
N
Tillequin
F
F
Fomum
Z T
ZT
D002109:Caffeic Acids / Q000737:chemistry / Q000302:isolation & purification; D019665:Euphorbiaceae / Q000737:chemistry*; D006868:Hydrolysis; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018547:Plant Stems / Q000737:chemistry; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared
D002109:Caffeic Acids; D012717:Sesquiterpenes