New triterpenoids from the stem barks of Drypetes tessmanniana.
The MeOH extract of the stem barks of Drypetes tessmanniana (Euphorbiaceae) afforded two new triterpene derivatives characterized as 3beta-O-(E)-3,5-dihydroxycinnamoyl-11-oxo-olean-12-ene and 3beta,6alpha-dihydroxylup-20(29)-ene together with seven known compounds. Their structures were established on the basis of spectral analysis.
Dongfack
Marlise Diane Jiofack
MD
Department of Organic Chemistry, Faculty of Science, University of Yaounde-1, Yaounde, Cameroon.
Van-Dufat
Hanh Trinh
HT
Lallemand
Marie-Christine
MC
Wansi
Jean-Duplex
JD
Seguin
Elisabeth
E
Tillequin
François
F
Wandji
Jean
J